Referring to the Comportable guideline for peripheral device functionality, the module sysrst_ctrl has the following hardware interfaces defined
- Primary Clock:
clk_i
- Other Clocks:
clk_aon_i
- Bus Device Interfaces (TL-UL):
tl
- Bus Host Interfaces (TL-UL): none
| Pin name | Direction | Description |
|---|
| ac_present | input | A/C power is present |
| key0_in | input | VolUp button in tablet; column output from the EC in a laptop |
| key1_in | input | VolDown button in tablet; row input from keyboard matrix in a laptop |
| key2_in | input | TBD button in tablet; row input from keyboard matrix in a laptop |
| pwrb_in | input | Power button in both tablet and laptop |
| lid_open | input | Lid is open |
| bat_disable | output | Battery is disconnected |
| key0_out | output | Passthrough from key0_in, can be configured to invert |
| key1_out | output | Passthrough from key1_in, can be configured to invert |
| key2_out | output | Passthrough from key2_in, can be configured to invert |
| pwrb_out | output | Passthrough from pwrb_in, can be configured to invert |
| z3_wakeup | output | To enter Z3 mode and exit from Z4 sleep mode |
| ec_rst_l | inout | ec_rst_l as an inout to/from the open drain IO |
| flash_wp_l | inout | flash_wp_l as an inout to/from the open drain IO |
| Port Name | Package::Struct | Type | Act | Width | Description |
|---|
| wkup_req | logic | uni | req | 1 | |
| rst_req | logic | uni | req | 1 | |
| tl | tlul_pkg::tl | req_rsp | rsp | 1 | |
| Interrupt Name | Type | Description |
|---|
| event_detected | Status | Common interrupt triggered by combo or keyboard events. |
| Alert Name | Description |
|---|
| fatal_fault | This fatal alert is triggered when a fatal TL-UL bus integrity fault is detected. |
| Countermeasure ID | Description |
|---|
| SYSRST_CTRL.BUS.INTEGRITY | End-to-end bus integrity scheme. |