8399 N/B Maintenance
5.3 VIA VT8235CD South Bridge(8)General Purpose Outputs
Signal Name | Pin # | I/O |
GPO0 (VSUS33) | AA3 | O |
GPO1 / SUSA# | AA2 | O |
(VSUS33) |
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GPO2 / SUSB# | AD3 | O |
(VSUS33) |
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GPO3 / | Y3 | O |
SUSST1# |
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(VSUS33) |
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GPO4 / SUSCLK | AB3 | O |
(VSUS33) |
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GPO5 / | AC7 | O |
CPUSTP# |
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GPO6 / PCISTP# | AD6 | O |
GPO7 / GNT5# | R2 | O |
GPO12 / GPI12 / | D4 | O |
INTE# |
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GPO13 / GPI13 / | E4 | O |
INTF# |
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GPO14 / GPI14 / | A3 | O |
INTG# |
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GPO15 / GPI15 / | B3 | O |
INTH# |
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GPO20 / GPI20 / | U1 | OD |
ACSDIN2 / |
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PCS0# |
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GPO21 / GPI21 / | V3 | OD |
ACSDIN3 / |
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PCS1# |
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/SLPBTN# |
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GPO22 / GPI22 / | R22 | OD |
GHI# |
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GPO23 / GPI23 / | P21 | OD |
DPSLP# |
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GPO26 / GPI26 / | AD1 | OD |
SMBDT2 |
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(VSUS33ƒ) |
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GPO27 / GPI27 / | AC3 | OD |
SMBCK2 |
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(VSUS33ƒ)
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| General Purpose Outputs (Continued) | |||
Signal Description |
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| Signal Name | Pin # | I/O | Signal Description |
General Purpose Output 0. |
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| GPO28 / GPI28 | AC8 | OD | General Purpose Output 28. RxE5[3] = 1, PMIO 4C[28]=1 |
General Purpose Output 1. Rx94[2] = 1 |
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| GPO29 / GPI29 / | AB9 | OD | General Purpose Output 29. RxE5[3] = 1, PMIO 4C[29]=1 |
General Purpose Output 2. Rx94[3] = 1 |
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| VRDSLP |
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| Note: The output state for each of the above general purpose outputs is selectable via Power | ||||
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| Management I/O registers |
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General Purpose Output 3. Rx94[4] = 1 |
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| Note: Default pin functions are underlined in the table above. | |||
General Purpose Output 13. RxE4[4]=1, 5B[1]=0 |
| Documentby VSUS33. | ||||
General Purpose Output 4. Rx95[1] = 1 |
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General Purpose Output 5. RxE4[0] = 1 |
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| Power Manage ent and Event Detection | |||
General Purpose Output 6. RxE4[1] = 1 |
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| Signal Name | Pin # | I/O | Signal Description |
MiTac |
| PWRBTN# | AD2 | I | Power Button. Used by the Power Management subsystem | |
General Purpose Output 7. RxE4[2] = 0 | Secret |
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| to monitor an external | ||
General Purpose Output 12. RxE4[4]=1, 5B[1]=0 |
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| system on/off button or switch. Internal logic powered |
Confidential | SLPBTN# / | V3 | I | Sleep Button. Used by the Power Management subsystem | ||
General Purpose Output 14. RxE4[4]=1, 5B[1]=0 |
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| GPIO21/ |
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| to monitor an external sleepbutton or switch. RxE4[6] = 1, |
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| ACSDIN3 / |
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| 80[6] = 1, E5[2] = 0 and PMIO Rx4C[21] = 1 | |
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General Purpose Output 15. RxE4[4]=1, 5B[1]=0 |
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| PCS1# |
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| Resume Reset. Resets the internal logic connected to the |
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| RSMRST# | AD4 | I | ||
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General Purpose Output 20. RxE4[6]=1, E5[1]=0 |
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| VSUS33 power plane and |
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| also resets portions of the internal RTC logic. Internal logic | |
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| EXTSMI# / |
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| powered by VBAT. |
General Purpose Output 21. RxE4[6]=1, E5[2]=0 |
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| AA1 | IOD | External System Management Interrupt. When enabled | |
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| GPI2 |
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| to allow it, a falling edge on | |
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| this input causes an SMI# to be generated to the CPU to |
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| enter SMI mode. (10K PU to |
General Purpose Output 22. RxE5[3]=1, PMIO 4C[22]=1 |
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| VSUS33 if not used) (3.3V only) |
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| PME# | W4 | I | Power Management Event. (10K PU to VSUS33 if not | |
General Purpose Output 23. RxE5[3]=1, PMIO 4C[23]=1 |
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| used) |
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| SMBALRT# | AB1 | I | SMB Alert. When programmed to allow it (SMB I/O | |
General Purpose Output 26. Rx95[2] = 1, 95[3] = 1 |
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| Rx8[3]=1), assertion generates |
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| an IRQ, SMI, or power management event. (10K PU to | |
VSUS33 if not used)
General Purpose Output 27. Rx95[2] = 1, 95[3] = 1
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