| // Copyright lowRISC contributors. |
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. |
| // SPDX-License-Identifier: Apache-2.0 |
| // |
| ## PINMUX register template |
| ## |
| ## Parameter (given by Python tool) |
| ## - n_mio_periph_in: Number of muxed peripheral inputs |
| ## - n_mio_periph_out: Number of muxed peripheral outputs |
| ## - n_mio_pads: Number of muxed IO pads |
| ## - n_dio_periph_in: Number of dedicated peripheral inputs |
| ## - n_dio_periph_out: Number of dedicated peripheral outputs |
| ## - n_dio_pads: Number of dedicated IO pads |
| ## - n_wkup_detect: Number of wakeup condition detectors |
| ## - wkup_cnt_width: Width of wakeup counters |
| ## - attr_dw: Width of wakeup counters |
| { |
| name: "pinmux", |
| human_name: "Pin Multiplexer", |
| one_line_desc: "Multiplexes between on-chip hardware blocks and pins, and can be configured at runtime", |
| one_paragraph_desc: ''' |
| Pin Multiplexer connects on-chip hardware blocks to IC pins and controls the attributes of the pin drivers (such as pull-up/down, open-drain, and drive strength). |
| Large parts of its functionality can be controlled by software through registers. |
| Further features include per-pin programmable sleep behavior and wakeup pattern detectors as well as support for life-cycle-based JTAG (TAP) isolation and muxing. |
| ''' |
| design_spec: "../doc", |
| dv_doc: "../doc/dv", |
| hw_checklist: "../doc/checklist", |
| sw_checklist: "/sw/device/lib/dif/dif_pinmux", |
| version: "1.0", |
| life_stage: "L1", |
| design_stage: "D3", |
| verification_stage: "V2", |
| dif_stage: "S2", |
| notes: "Use FPV to perform block level verification.", |
| clocking: [ |
| {clock: "clk_i", reset: "rst_ni", primary: true}, |
| {clock: "clk_aon_i", reset: "rst_aon_ni"}, |
| {reset: "rst_sys_ni"} |
| ] |
| bus_interfaces: [ |
| { protocol: "tlul", direction: "device" } |
| ], |
| regwidth: "32", |
| scan: "true", |
| |
| alert_list: [ |
| { name: "fatal_fault", |
| desc: ''' |
| This fatal alert is triggered when a fatal TL-UL bus integrity fault is detected. |
| ''' |
| } |
| ], |
| |
| wakeup_list: [ |
| { name: "pin_wkup_req", |
| desc: "pin wake request" |
| }, |
| { name: "usb_wkup_req", |
| desc: "usb wake request" |
| }, |
| ], |
| |
| inter_signal_list: [ |
| // Life cycle inputs |
| { struct: "lc_tx" |
| type: "uni" |
| name: "lc_hw_debug_en" |
| act: "rcv" |
| default: "lc_ctrl_pkg::Off" |
| package: "lc_ctrl_pkg", |
| desc: ''' |
| Debug enable qualifier coming from life cycle controller, used for HW strap qualification. |
| ''' |
| } |
| { struct: "lc_tx" |
| type: "uni" |
| name: "lc_dft_en" |
| act: "rcv" |
| default: "lc_ctrl_pkg::Off" |
| package: "lc_ctrl_pkg", |
| desc: ''' |
| Test enable qualifier coming from life cycle controller, used for HW strap qualification. |
| ''' |
| } |
| { struct: "lc_tx" |
| type: "uni" |
| name: "lc_escalate_en" |
| act: "rcv" |
| default: "lc_ctrl_pkg::Off" |
| package: "lc_ctrl_pkg", |
| desc: ''' |
| Escalation enable signal coming from life cycle controller, used for invalidating |
| the latched lc_hw_debug_en state inside the strap sampling logic. |
| ''',} |
| |
| { struct: "lc_tx" |
| type: "uni" |
| name: "lc_check_byp_en" |
| act: "rcv" |
| default: "lc_ctrl_pkg::Off" |
| package: "lc_ctrl_pkg", |
| desc: ''' |
| Check bypass enable signal coming from life cycle controller, used for invalidating |
| the latched lc_hw_debug_en state inside the strap sampling logic. This signal is asserted |
| whenever the life cycle controller performs a life cycle transition. Its main use is |
| to skip any background checks inside the life cycle partition of the OTP controller while |
| a life cycle transition is in progress. |
| ''',} |
| |
| { struct: "lc_tx" |
| type: "uni" |
| name: "pinmux_hw_debug_en" |
| act: "req" |
| default: "lc_ctrl_pkg::Off" |
| package: "lc_ctrl_pkg", |
| desc: ''' |
| This is the latched version of lc_hw_debug_en_i. We use it exclusively to gate the JTAG |
| signals and TAP side of the RV_DM so that RV_DM can remain live during an NDM reset cycle. |
| ''',} |
| |
| // JTAG TAPs |
| { struct: "jtag" |
| type: "req_rsp" |
| name: "lc_jtag" |
| act: "req" |
| package: "jtag_pkg" |
| desc: ''' |
| Qualified JTAG signals for life cycle controller TAP. |
| ''',} |
| |
| { struct: "jtag" |
| type: "req_rsp" |
| name: "rv_jtag" |
| act: "req" |
| package: "jtag_pkg" |
| desc: ''' |
| Qualified JTAG signals for RISC-V processor TAP. |
| ''',} |
| |
| { struct: "jtag" |
| type: "req_rsp" |
| name: "dft_jtag" |
| act: "req" |
| package: "jtag_pkg" |
| desc: ''' |
| Qualified JTAG signals for DFT TAP. |
| ''',} |
| |
| // Testmode signals to AST |
| { struct: "dft_strap_test_req", |
| type: "uni", |
| name: "dft_strap_test", |
| act: "req", |
| package: "pinmux_pkg", |
| desc: ''' |
| Sampled DFT strap values, going to the DFT TAP. |
| ''', |
| default: "'0" |
| } |
| // DFT indication to stop tap strap sampling |
| { struct: "logic", |
| type: "uni", |
| name: "dft_hold_tap_sel", |
| act: "rcv", |
| package: "", |
| desc: ''' |
| TAP selection hold indication, asserted by the DFT TAP during boundary scan. |
| ''', |
| default: "'0" |
| } |
| // Define pwr mgr <-> pinmux signals |
| { struct: "logic", |
| type: "uni", |
| name: "sleep_en", |
| act: "rcv", |
| package: "", |
| desc: ''' |
| Level signal that is asserted when the power manager enters sleep. |
| ''', |
| default: "1'b0" |
| }, |
| { struct: "logic", |
| type: "uni", |
| name: "strap_en", |
| act: "rcv", |
| package: "", |
| desc: ''' |
| This signal is pulsed high by the power manager after reset in order to sample the HW straps. |
| ''', |
| default: "1'b0" |
| }, |
| { struct: "logic", |
| type: "uni", |
| name: "pin_wkup_req", |
| act: "req", |
| package: "", |
| desc: ''' |
| Wakeup request from wakeup detectors, to the power manager, running on the AON clock. |
| ''', |
| default: "1'b0" |
| }, |
| { name: "usbdev_dppullup_en", |
| type: "uni", |
| act: "rcv", |
| package: "", |
| desc: ''' |
| Pullup enable signal coming from the USB IP. |
| ''', |
| struct: "logic", |
| width: "1" |
| }, |
| { name: "usbdev_dnpullup_en", |
| type: "uni", |
| act: "rcv", |
| package: "", |
| desc: ''' |
| Pullup enable signal coming from the USB IP. |
| ''', |
| struct: "logic", |
| width: "1" |
| }, |
| { name: "usb_dppullup_en", |
| type: "uni", |
| act: "req", |
| package: "", |
| desc: ''' |
| Pullup enable signal going to USB PHY, needs to be maintained in low-power mode. |
| ''', |
| struct: "logic", |
| width: "1" |
| default: "1'b0" |
| }, |
| { name: "usb_dnpullup_en", |
| type: "uni", |
| act: "req", |
| package: "", |
| desc: ''' |
| Pullup enable signal going to USB PHY, needs to be maintained in low-power mode. |
| ''', |
| struct: "logic", |
| width: "1" |
| default: "1'b0" |
| }, |
| { struct: "logic", |
| type: "uni", |
| name: "usb_wkup_req", |
| act: "req", |
| package: "", |
| desc: ''' |
| Wakeup request from USB wakeup detector, going to the power manager, running on the AON clock. |
| ''', |
| default: "1'b0" |
| }, |
| { name: "usbdev_suspend_req", |
| type: "uni", |
| act: "rcv", |
| package: "", |
| desc: ''' |
| Indicates whether USB is in suspended state, coming from the USB device. |
| ''', |
| struct: "logic", |
| width: "1" |
| }, |
| { name: "usbdev_wake_ack", |
| type: "uni", |
| act: "rcv", |
| package: "", |
| desc: ''' |
| Acknowledges the USB wakeup request, coming from the USB device. |
| ''', |
| struct: "logic", |
| width: "1" |
| }, |
| { name: "usbdev_bus_reset", |
| type: "uni", |
| act: "req", |
| package: "", |
| desc: ''' |
| Event signal that indicates what happened while monitoring. |
| ''', |
| struct: "logic", |
| width: "1", |
| default: "1'b0" |
| }, |
| { name: "usbdev_sense_lost", |
| type: "uni", |
| act: "req", |
| package: "", |
| desc: ''' |
| Event signal that indicates what happened while monitoring. |
| ''', |
| struct: "logic", |
| width: "1", |
| default: "1'b0" |
| }, |
| { name: "usbdev_wake_detect_active", |
| type: "uni", |
| act: "req", |
| package: "", |
| desc: ''' |
| State debug information. |
| ''', |
| struct: "logic", |
| width: 1, |
| default: "1'b0" |
| }, |
| ] |
| |
| param_list: [ |
| { name: "AttrDw", |
| desc: "Pad attribute data width", |
| type: "int", |
| default: "${attr_dw}", |
| local: "true" |
| }, |
| { name: "NMioPeriphIn", |
| desc: "Number of muxed peripheral inputs", |
| type: "int", |
| default: "${n_mio_periph_in}", |
| local: "true" |
| }, |
| { name: "NMioPeriphOut", |
| desc: "Number of muxed peripheral outputs", |
| type: "int", |
| default: "${n_mio_periph_out}", |
| local: "true" |
| }, |
| { name: "NMioPads", |
| desc: "Number of muxed IO pads", |
| type: "int", |
| default: "${n_mio_pads}", |
| local: "true" |
| }, |
| { name: "NDioPads", |
| desc: "Number of dedicated IO pads", |
| type: "int", |
| default: "${n_dio_pads}", |
| local: "true" |
| }, |
| { name: "NWkupDetect", |
| desc: "Number of wakeup detectors", |
| type: "int", |
| default: "${n_wkup_detect}", |
| local: "true" |
| }, |
| { name: "WkupCntWidth", |
| desc: "Number of wakeup counter bits", |
| type: "int", |
| default: "${wkup_cnt_width}", |
| local: "true" |
| }, |
| // Since the target-specific top-levels often have slightly |
| // different debug signal positions, we need a way to pass |
| // this info from the target specific top-level into the pinmux |
| // logic. The parameter struct below serves this purpose. |
| { name: "TargetCfg", |
| desc: "Target specific pinmux configuration.", |
| type: "pinmux_pkg::target_cfg_t", |
| default: "pinmux_pkg::DefaultTargetCfg", |
| local: "false", |
| expose: "true" |
| }, |
| ], |
| countermeasures: [ |
| { name: "BUS.INTEGRITY", |
| desc: "End-to-end bus integrity scheme." |
| } |
| ] |
| |
| registers: [ |
| ////////////////////////// |
| // MIO Inputs // |
| ////////////////////////// |
| { multireg: { name: "MIO_PERIPH_INSEL_REGWEN", |
| desc: "Register write enable for MIO peripheral input selects.", |
| count: "NMioPeriphIn", |
| compact: "false", |
| swaccess: "rw0c", |
| hwaccess: "none", |
| cname: "MIO_PERIPH_INSEL", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| desc: ''' |
| Register write enable bit. |
| If this is cleared to 0, the corresponding MIO_PERIPH_INSEL |
| is not writable anymore. |
| ''', |
| resval: "1", |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "MIO_PERIPH_INSEL", |
| desc: "For each peripheral input, this selects the muxable pad input.", |
| count: "NMioPeriphIn", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "MIO_PERIPH_INSEL_REGWEN", |
| regwen_multi: "true", |
| cname: "IN", |
| fields: [ |
| { bits: "${(n_mio_pads+1).bit_length()-1}:0", |
| name: "IN", |
| desc: ''' |
| 0: tie constantly to zero, 1: tie constantly to 1, |
| >=2: MIO pads (i.e., add 2 to the native MIO pad index). |
| ''' |
| resval: 0, |
| } |
| ] |
| } |
| }, |
| |
| ////////////////////////// |
| // MIO Outputs // |
| ////////////////////////// |
| { multireg: { name: "MIO_OUTSEL_REGWEN", |
| desc: "Register write enable for MIO output selects.", |
| count: "NMioPads", |
| compact: "false", |
| swaccess: "rw0c", |
| hwaccess: "none", |
| cname: "MIO_OUTSEL", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| desc: ''' |
| Register write enable bit. |
| If this is cleared to 0, the corresponding MIO_OUTSEL |
| is not writable anymore. |
| ''', |
| resval: "1", |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "MIO_OUTSEL", |
| desc: "For each muxable pad, this selects the peripheral output.", |
| count: "NMioPads", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "MIO_OUTSEL_REGWEN", |
| regwen_multi: "true", |
| cname: "OUT", |
| fields: [ |
| { bits: "${(n_mio_periph_out+2).bit_length()-1}:0", |
| name: "OUT", |
| desc: ''' |
| 0: tie constantly to zero, 1: tie constantly to 1, 2: high-Z, |
| >=3: peripheral outputs (i.e., add 3 to the native peripheral pad index). |
| ''' |
| resval: 2, |
| } |
| ] |
| // Random writes to this field may result in pad drive conflicts, |
| // which in turn leads to propagating Xes and assertion failures. |
| tags: ["excl:CsrAllTests:CsrExclWrite"] |
| } |
| }, |
| |
| ////////////////////////// |
| // MIO PAD attributes // |
| ////////////////////////// |
| { multireg: { name: "MIO_PAD_ATTR_REGWEN", |
| desc: "Register write enable for MIO PAD attributes.", |
| count: "NMioPads", |
| compact: "false", |
| swaccess: "rw0c", |
| hwaccess: "none", |
| cname: "MIO_PAD", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| desc: ''' |
| Register write enable bit. |
| If this is cleared to 0, the corresponding !!MIO_PAD_ATTR |
| is not writable anymore. |
| ''', |
| resval: "1", |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "MIO_PAD_ATTR", |
| desc: ''' |
| Muxed pad attributes. |
| This register has WARL behavior since not each pad type may support |
| all attributes. |
| ''', |
| count: "NMioPads", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hrw", |
| hwext: "true", |
| hwqe: "true", |
| regwen: "MIO_PAD_ATTR_REGWEN", |
| regwen_multi: "true", |
| cname: "MIO_PAD", |
| resval: 0 |
| fields: [ |
| { bits: "0", |
| name: "invert", |
| desc: "Invert input and output levels." |
| }, |
| { bits: "1", |
| name: "virtual_od_en", |
| desc: "Enable virtual open drain." |
| }, |
| { bits: "2", |
| name: "pull_en", |
| desc: "Enable pull-up or pull-down resistor." |
| }, |
| { bits: "3", |
| name: "pull_select", |
| desc: "Pull select (0: pull-down, 1: pull-up)." |
| enum: [ |
| { value: "0", |
| name: "pull_down", |
| desc: "Select the pull-down resistor." |
| }, |
| { value: "1", |
| name: "pull_up", |
| desc: "Select the pull-up resistor." |
| } |
| ] |
| }, |
| { bits: "4", |
| name: "keeper_en", |
| desc: "Enable pull-up or pull-down resistor." |
| }, |
| { bits: "5", |
| name: "schmitt_en", |
| desc: "Enable the schmitt trigger." |
| }, |
| { bits: "6", |
| name: "od_en", |
| desc: "Enable open drain." |
| }, |
| { bits: "17:16", |
| name: "slew_rate", |
| desc: "Slew rate (0x0: slowest, 0x3: fastest)." |
| }, |
| { bits: "23:20", |
| name: "drive_strength", |
| desc: "Drive strength (0x0: weakest, 0xf: strongest)" |
| } |
| ], |
| // these CSRs have WARL behavior and may not |
| // read back the same value that was written to them. |
| // further, they have hardware side effects since they drive the |
| // pad attributes, and hence no random data should be written to them. |
| tags: ["excl:CsrAllTests:CsrExclWrite"] |
| } |
| }, |
| |
| ////////////////////////// |
| // DIO PAD attributes // |
| ////////////////////////// |
| { multireg: { name: "DIO_PAD_ATTR_REGWEN", |
| desc: "Register write enable for DIO PAD attributes.", |
| count: "NDioPads", |
| compact: "false", |
| swaccess: "rw0c", |
| hwaccess: "none", |
| cname: "DIO_PAD", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| desc: ''' |
| Register write enable bit. |
| If this is cleared to 0, the corresponding !!DIO_PAD_ATTR |
| is not writable anymore. |
| ''', |
| resval: "1", |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "DIO_PAD_ATTR", |
| desc: ''' |
| Dedicated pad attributes. |
| This register has WARL behavior since not each pad type may support |
| all attributes. |
| ''', |
| count: "NDioPads", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hrw", |
| hwext: "true", |
| hwqe: "true", |
| regwen: "DIO_PAD_ATTR_REGWEN", |
| regwen_multi: "true", |
| cname: "DIO_PAD", |
| resval: 0, |
| fields: [ |
| { bits: "0", |
| name: "invert", |
| desc: "Invert input and output levels." |
| }, |
| { bits: "1", |
| name: "virtual_od_en", |
| desc: "Enable virtual open drain." |
| }, |
| { bits: "2", |
| name: "pull_en", |
| desc: "Enable pull-up or pull-down resistor." |
| }, |
| { bits: "3", |
| name: "pull_select", |
| desc: "Pull select (0: pull-down, 1: pull-up)." |
| enum: [ |
| { value: "0", |
| name: "pull_down", |
| desc: "Select the pull-down resistor." |
| }, |
| { value: "1", |
| name: "pull_up", |
| desc: "Select the pull-up resistor." |
| } |
| ] |
| }, |
| { bits: "4", |
| name: "keeper_en", |
| desc: "Enable pull-up or pull-down resistor." |
| }, |
| { bits: "5", |
| name: "schmitt_en", |
| desc: "Enable the schmitt trigger." |
| }, |
| { bits: "6", |
| name: "od_en", |
| desc: "Enable open drain." |
| }, |
| { bits: "17:16", |
| name: "slew_rate", |
| desc: "Slew rate (0x0: slowest, 0x3: fastest)." |
| }, |
| { bits: "23:20", |
| name: "drive_strength", |
| desc: "Drive strength (0x0: weakest, 0xf: strongest)" |
| } |
| ], |
| // these CSRs have WARL behavior and may not |
| // read back the same value that was written to them. |
| // further, they have hardware side effects since they drive the |
| // pad attributes, and hence no random data should be written to them. |
| tags: ["excl:CsrAllTests:CsrExclWrite"] |
| } |
| }, |
| |
| ////////////////////////// |
| // MIO PAD sleep mode // |
| ////////////////////////// |
| { multireg: { name: "MIO_PAD_SLEEP_STATUS", |
| desc: "Register indicating whether the corresponding pad is in sleep mode.", |
| count: "NMioPads", |
| swaccess: "rw0c", |
| hwaccess: "hrw", |
| cname: "MIO_PAD", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| desc: ''' |
| This register is set to 1 if the deep sleep mode of the corresponding |
| pad has been enabled (!!MIO_PAD_SLEEP_EN) upon deep sleep entry. |
| The sleep mode of the corresponding pad will remain active until SW |
| clears this bit. |
| ''', |
| resval: "0", |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "MIO_PAD_SLEEP_REGWEN", |
| desc: "Register write enable for MIO sleep value configuration.", |
| count: "NMioPads", |
| compact: "false", |
| swaccess: "rw0c", |
| hwaccess: "none", |
| cname: "MIO_PAD", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| desc: ''' |
| Register write enable bit. |
| If this is cleared to 0, the corresponding !!MIO_PAD_SLEEP_MODE |
| is not writable anymore. |
| ''', |
| resval: "1", |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "MIO_PAD_SLEEP_EN", |
| desc: '''Enables the sleep mode of the corresponding muxed pad. |
| ''' |
| count: "NMioPads", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "MIO_PAD_SLEEP_REGWEN", |
| regwen_multi: "true", |
| cname: "OUT", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| resval: 0, |
| desc: ''' |
| Deep sleep mode enable. |
| If this bit is set to 1 the corresponding pad will enable the sleep behavior |
| specified in !!MIO_PAD_SLEEP_MODE upon deep sleep entry, and the corresponding bit |
| in !!MIO_PAD_SLEEP_STATUS will be set to 1. |
| The pad remains in deep sleep mode until the corresponding bit in |
| !!MIO_PAD_SLEEP_STATUS is cleared by SW. |
| Note that if an always on peripheral is connected to a specific MIO pad, |
| the corresponding !!MIO_PAD_SLEEP_EN bit should be set to 0. |
| ''' |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "MIO_PAD_SLEEP_MODE", |
| desc: '''Defines sleep behavior of the corresponding muxed pad. |
| ''' |
| count: "NMioPads", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "MIO_PAD_SLEEP_REGWEN", |
| regwen_multi: "true", |
| cname: "OUT", |
| fields: [ |
| { bits: "1:0", |
| name: "OUT", |
| resval: 2, |
| desc: "Value to drive in deep sleep." |
| enum: [ |
| { value: "0", |
| name: "Tie-Low", |
| desc: "The pad is driven actively to zero in deep sleep mode." |
| }, |
| { value: "1", |
| name: "Tie-High", |
| desc: "The pad is driven actively to one in deep sleep mode." |
| }, |
| { value: "2", |
| name: "High-Z", |
| desc: ''' |
| The pad is left undriven in deep sleep mode. Note that the actual |
| driving behavior during deep sleep will then depend on the pull-up/-down |
| configuration of in !!MIO_PAD_ATTR. |
| ''' |
| }, |
| { value: "3", |
| name: "Keep", |
| desc: "Keep last driven value (including high-Z)." |
| }, |
| ] |
| } |
| ] |
| } |
| }, |
| ////////////////////////// |
| // DIO PAD sleep mode // |
| ////////////////////////// |
| { multireg: { name: "DIO_PAD_SLEEP_STATUS", |
| desc: "Register indicating whether the corresponding pad is in sleep mode.", |
| count: "NDioPads", |
| swaccess: "rw0c", |
| hwaccess: "hrw", |
| cname: "DIO_PAD", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| desc: ''' |
| This register is set to 1 if the deep sleep mode of the corresponding |
| pad has been enabled (!!DIO_PAD_SLEEP_MODE) upon deep sleep entry. |
| The sleep mode of the corresponding pad will remain active until SW |
| clears this bit. |
| ''', |
| resval: "0", |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "DIO_PAD_SLEEP_REGWEN", |
| desc: "Register write enable for DIO sleep value configuration.", |
| count: "NDioPads", |
| compact: "false", |
| swaccess: "rw0c", |
| hwaccess: "none", |
| cname: "DIO_PAD", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| desc: ''' |
| Register write enable bit. |
| If this is cleared to 0, the corresponding !!DIO_PAD_SLEEP_MODE |
| is not writable anymore. |
| ''', |
| resval: "1", |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "DIO_PAD_SLEEP_EN", |
| desc: '''Enables the sleep mode of the corresponding dedicated pad. |
| ''' |
| count: "NDioPads", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "DIO_PAD_SLEEP_REGWEN", |
| regwen_multi: "true", |
| cname: "OUT", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| resval: 0, |
| desc: ''' |
| Deep sleep mode enable. |
| If this bit is set to 1 the corresponding pad will enable the sleep behavior |
| specified in !!DIO_PAD_SLEEP_MODE upon deep sleep entry, and the corresponding bit |
| in !!DIO_PAD_SLEEP_STATUS will be set to 1. |
| The pad remains in deep sleep mode until the corresponding bit in |
| !!DIO_PAD_SLEEP_STATUS is cleared by SW. |
| Note that if an always on peripheral is connected to a specific DIO pad, |
| the corresponding !!DIO_PAD_SLEEP_EN bit should be set to 0. |
| ''' |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "DIO_PAD_SLEEP_MODE", |
| desc: '''Defines sleep behavior of the corresponding dedicated pad. |
| ''' |
| count: "NDioPads", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "DIO_PAD_SLEEP_REGWEN", |
| regwen_multi: "true", |
| cname: "OUT", |
| fields: [ |
| { bits: "1:0", |
| name: "OUT", |
| resval: 2, |
| desc: "Value to drive in deep sleep." |
| enum: [ |
| { value: "0", |
| name: "Tie-Low", |
| desc: "The pad is driven actively to zero in deep sleep mode." |
| }, |
| { value: "1", |
| name: "Tie-High", |
| desc: "The pad is driven actively to one in deep sleep mode." |
| }, |
| { value: "2", |
| name: "High-Z", |
| desc: ''' |
| The pad is left undriven in deep sleep mode. Note that the actual |
| driving behavior during deep sleep will then depend on the pull-up/-down |
| configuration of in !!DIO_PAD_ATTR. |
| ''' |
| }, |
| { value: "3", |
| name: "Keep", |
| desc: "Keep last driven value (including high-Z)." |
| }, |
| ] |
| } |
| ] |
| } |
| }, |
| //////////////////////// |
| // Wakeup detectors // |
| //////////////////////// |
| { multireg: { name: "WKUP_DETECTOR_REGWEN", |
| desc: "Register write enable for wakeup detectors.", |
| count: "NWkupDetect", |
| compact: "false", |
| swaccess: "rw0c", |
| hwaccess: "none", |
| cname: "WKUP_DETECTOR", |
| fields: [ |
| { bits: "0", |
| name: "EN", |
| desc: ''' |
| Register write enable bit. |
| If this is cleared to 0, the corresponding WKUP_DETECTOR |
| configuration is not writable anymore. |
| ''', |
| resval: "1", |
| } |
| ] |
| } |
| }, |
| { multireg: { name: "WKUP_DETECTOR_EN", |
| desc: ''' |
| Enables for the wakeup detectors. |
| Note that these registers are synced to the always-on clock. |
| The first write access always completes immediately. |
| However, read/write accesses following a write will block until that write has completed. |
| ''' |
| count: "NWkupDetect", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "WKUP_DETECTOR_REGWEN", |
| regwen_multi: "true", |
| cname: "DETECTOR", |
| async: "clk_aon_i", |
| fields: [ |
| { bits: "0:0", |
| name: "EN", |
| resval: 0, |
| desc: ''' |
| Setting this bit activates the corresponding wakeup detector. |
| The behavior is as specified in !!WKUP_DETECTOR, |
| !!WKUP_DETECTOR_CNT_TH and !!WKUP_DETECTOR_PADSEL. |
| ''' |
| // In CSR tests, we do not touch the chip IOs. Thet are either pulled low or |
| // or undriven. |
| // |
| // Random writes to the wkup detect CSRs may result in the case where the |
| // wakeup gets enabled and signaled due to a pin being low for a programmed |
| // time, which results in wkup_cause register to mismatch, OR, result in |
| // assertion error due to a pin programmed for wakeup detection is undriven |
| // Also exclude write for csr_hw_reset, otherwise, X may be detected and propagating. |
| tags: ["excl:CsrAllTests:CsrExclWrite"] |
| } |
| ] |
| } |
| |
| }, |
| { multireg: { name: "WKUP_DETECTOR", |
| desc: ''' |
| Configuration of wakeup condition detectors. |
| Note that these registers are synced to the always-on clock. |
| The first write access always completes immediately. |
| However, read/write accesses following a write will block until that write has completed. |
| |
| Note that the wkup detector should be disabled by setting !!WKUP_DETECTOR_EN_0 before changing the detection mode. |
| The reason for that is that the pulse width counter is NOT cleared upon a mode change while the detector is enabled. |
| ''' |
| count: "NWkupDetect", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "WKUP_DETECTOR_REGWEN", |
| regwen_multi: "true", |
| cname: "DETECTOR", |
| async: "clk_aon_i", |
| fields: [ |
| { bits: "2:0", |
| name: "MODE", |
| resval: 0, |
| desc: "Wakeup detection mode. Out of range values default to Posedge." |
| enum: [ |
| { value: "0", |
| name: "Posedge", |
| desc: "Trigger a wakeup request when observing a positive edge." |
| }, |
| { value: "1", |
| name: "Negedge", |
| desc: "Trigger a wakeup request when observing a negative edge." |
| }, |
| { value: "2", |
| name: "Edge", |
| desc: "Trigger a wakeup request when observing an edge in any direction." |
| }, |
| { value: "3", |
| name: "TimedHigh", |
| desc: ''' |
| Trigger a wakeup request when pin is driven HIGH for a certain amount |
| of always-on clock cycles as configured in !!WKUP_DETECTOR_CNT_TH. |
| ''' |
| }, |
| { value: "4", |
| name: "TimedLow", |
| desc: ''' |
| Trigger a wakeup request when pin is driven LOW for a certain amount |
| of always-on clock cycles as configured in !!WKUP_DETECTOR_CNT_TH. |
| ''' |
| }, |
| |
| ] |
| } |
| { bits: "3", |
| name: "FILTER", |
| resval: 0, |
| desc: '''0: signal filter disabled, 1: signal filter enabled. the signal must |
| be stable for 4 always-on clock cycles before the value is being forwarded. |
| can be used for debouncing. |
| ''' |
| } |
| { bits: "4", |
| name: "MIODIO", |
| resval: 0, |
| desc: '''0: select index !!WKUP_DETECTOR_PADSEL from MIO pads, |
| 1: select index !!WKUP_DETECTOR_PADSEL from DIO pads. |
| ''' |
| } |
| ] |
| } |
| |
| }, |
| { multireg: { name: "WKUP_DETECTOR_CNT_TH", |
| desc: ''' |
| Counter thresholds for wakeup condition detectors. |
| Note that these registers are synced to the always-on clock. |
| The first write access always completes immediately. |
| However, read/write accesses following a write will block until that write has completed. |
| ''' |
| count: "NWkupDetect", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "WKUP_DETECTOR_REGWEN", |
| regwen_multi: "true", |
| cname: "DETECTOR", |
| async: "clk_aon_i", |
| fields: [ |
| { bits: "WkupCntWidth-1:0", |
| name: "TH", |
| resval: 0, |
| desc: '''Counter threshold for TimedLow and TimedHigh wakeup detector modes (see !!WKUP_DETECTOR). |
| The threshold is in terms of always-on clock cycles. |
| ''' |
| } |
| ] |
| } |
| |
| }, |
| { multireg: { name: "WKUP_DETECTOR_PADSEL", |
| desc: ''' |
| Pad selects for pad wakeup condition detectors. |
| This register is NOT synced to the AON domain since the muxing mechanism is implemented in the same way as the pinmux muxing matrix. |
| ''' |
| count: "NWkupDetect", |
| compact: "false", |
| swaccess: "rw", |
| hwaccess: "hro", |
| regwen: "WKUP_DETECTOR_REGWEN", |
| regwen_multi: "true", |
| cname: "DETECTOR", |
| fields: [ |
| { bits: "${max(2 + n_mio_pads-1, n_dio_periph_in-1).bit_length()-1}:0", |
| name: "SEL", |
| resval: 0, |
| desc: '''Selects a specific MIO or DIO pad (depending on !!WKUP_DETECTOR configuration). |
| In case of MIO, the pad select index is the same as used for !!MIO_PERIPH_INSEL, meaning that index |
| 0 and 1 just select constants 0 and 1, and the MIO pads live at indices >= 2. In case of DIO pads, |
| the pad select index corresponds 1:1 to the DIO pad to be selected. |
| ''' |
| } |
| ] |
| } |
| |
| }, |
| { multireg: { name: "WKUP_CAUSE", |
| desc: ''' |
| Cause registers for wakeup detectors. |
| Note that these registers are synced to the always-on clock. |
| The first write access always completes immediately. |
| However, read/write accesses following a write will block until that write has completed. |
| ''' |
| count: "NWkupDetect", |
| swaccess: "rw0c", |
| hwaccess: "hrw", |
| cname: "DETECTOR", |
| async: "clk_aon_i", |
| fields: [ |
| { bits: "0", |
| name: "CAUSE", |
| resval: 0, |
| desc: '''Set to 1 if the corresponding detector has detected a wakeup pattern. Write 0 to clear. |
| ''' |
| } |
| ] |
| } |
| |
| }, |
| ], |
| } |
