GPIO Map: Difference between revisions

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(Update map for B2)
(Corrected input vs. output errors and added B1 and A columns)
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== Current GPIO Map ==
== Current GPIO Map ==
This map details the usage of each GPIO pin on the 5536. (Last updated January 15, 2007 for B2):
This map details the usage of each GPIO pin on the 5536. (Last updated March 8, 2007):
If blank, B1 and A are the same as B2.


{| border="1"
{| border="1"
! PIN !! Usage !! Input !! Output !! Notes !! OUTPUT_ENABLE !! OUT_AUX1 !! OUT_AUX2 !! INPUT_ENABLE !! IN_AUX1 !! INPUT_EVENT_ENABLE
! PIN !! B2 Usage !! B1 !! A !! Input !! Output !! Notes !! OUTPUT_ENABLE !! OUT_AUX1 !! OUT_AUX2 !! INPUT_ENABLE !! IN_AUX1 !! INPUT_EVENT_ENABLE
|-
|-
|1 || MIC_AC#/DC || X || || Controls the AC/DC input on the microphone || X || || || || ||
|1 || MIC_AC#/DC || PCSPK || PCSPK || || X || Controls the AC/DC input on the microphone || X || || || || ||
|-
|-
|2 || GPIO2 || X || || Reads memory strap || || || || X || ||
|2 || GPIO2 || || IRQ15 || X || || Reads memory strap || || || || X || ||
|-
|-
|3 || VGA SCL || - || - || EDID line - not needed for XO machine
|3 || VGA SCL || || || - || - || EDID line - not needed for XO machine
|-
|-
|4 || VGA SDA || - || - || EDID line - not needed for XO machine
|4 || VGA SDA || || || - || - || EDID line - not needed for XO machine
|-
|-
|5 || DCONSTAT0 || X || || DCON status pin (1 of 2) || || || || X || ||
|5 || DCONSTAT0 || || || X || || DCON status pin (1 of 2) || || || || X || ||
|-
|-
|6 || DCONSTAT1 || X || || DCON status pin (2 of 2) || || || || X || ||
|6 || DCONSTAT1 || || DCONMODE> || X || || DCON status pin (2 of 2) || || || || X || ||
|-
|-
|7 || DCONIRQ || X || || DCON Interrupt PIN || || || || X || || X
|7 || DCONIRQ || || PCI_INTB || X || || DCON Interrupt PIN || || || || X || || X
|-
|-
|8 || UART1_TX || || X || UART Transmit || X || X || || || ||
|8 || UART1_TX || || || || X || UART Transmit || X || X || || || ||
|-
|-
|9 || UART1_RX || || X || UART Receive || || || || X || X ||
|9 || UART1_RX || || || X || || UART Receive || || || || X || X ||
|-
|-
|10 || THERM_ALARM || X || || Thermal Alarm input || || || || X || X ||
|10 || THERM_ALARM || || N/C || X || || Thermal Alarm input || || || || X || X ||
|-
|-
|11 || DCONLOAD || || X || Output indicator for DCON || X || || || || ||
|11 || DCONLOAD || || P/U || || X || Output indicator for DCON || X || || || || ||
|-
|-
|12 || DCONBLNK || || X || DCON Signal || X || || || || ||
|12 || DCONBLNK || || || X || || DCON Signal || || || || X || ||
|-
|-
|13 || SMI# || || X || SMI# pin to the GX || X || || || || ||
|13 || SMI# || || || || X || SMI# pin to the GX || X || || || || ||
|-
|-
|14 || SMB_CLK || - || - || SMBus clock || || X || || X || X ||
|14 || SMB_CLK || || || - || - || SMBus clock || - || X || || - || X ||
|-
|-
|15 || SMB_DATA || - || - || SMBus data || || X || || X || X ||
|15 || SMB_DATA || || || - || - || SMBus data || - || X || || - || X ||
|-
|-
|16 || LPC_AD0 || - || - || Defaults to LPC - no GPIO control
|16 || LPC_AD0 || || || - || - || Defaults to LPC - no GPIO control
|-
|-
|17 || LPC_AD1 || - || - || Defaults to LPC - no GPIO control
|17 || LPC_AD1 || || || - || - || Defaults to LPC - no GPIO control
|-
|-
|18 || LPC_AD2 || - || - || Defaults to LPC - no GPIO control
|18 || LPC_AD2 || || || - || - || Defaults to LPC - no GPIO control
|-
|-
|19 || LPC_AD3 || - || - || Defaults to LPC - no GPIO control
|19 || LPC_AD3 || || || - || - || Defaults to LPC - no GPIO control
|-
|-
|20 || LPC_DRQ_L || - || - || Defaults to LPC - no GPIO control
|20 || LPC_DRQ_L || || || - || - || Defaults to LPC - no GPIO control
|-
|-
|21 || LPC_SERIRQ || - || - || Defaults to LPC - no GPIO control
|21 || LPC_SERIRQ || || || - || - || Defaults to LPC - no GPIO control
|-
|-
|22 || LPC_FRAME_L || - || - || Defaults to LPC - no GPIO control
|22 || LPC_FRAME_L || || || - || - || Defaults to LPC - no GPIO control
|-
|-
|24 || WORK_AUX || || X || Controls MAIN_ON (which controls VCORE_CPU) || X || X || || || ||
|24 || WORK_AUX || || || || X || Controls MAIN_ON (which controls VCORE_CPU) || X || X || || || ||
|-
|-
|25 || - || - || - || Unknown - line is SWI# goes into GPIO2 on the EC
|25 || SWI# || || || X || || Unknown - line comes from GPIO2 on the EC
|-
|-
|26 || PWR_BUT_in || X || || Lid event || || || || X || || X
|26 || PWR_BUT_in || || N/C || X || || Lid event || || || || X || || X
|-
|-
|27 || SCI# || X || || SCI from the EC for power and battery events || || || || X || || X
|27 || SCI# || || || X || || SCI from the EC for power and battery events || || || || X || || X
|-
|-
|28 || PWR_BUT# || X || || Power button input || || || || X || X ||
|28 || PWR_BUT# || || || X || || Power button input || || || || X || X ||
|}
|}


Revision as of 23:31, 8 March 2007

Current GPIO Map

This map details the usage of each GPIO pin on the 5536. (Last updated March 8, 2007): If blank, B1 and A are the same as B2.

PIN B2 Usage B1 A Input Output Notes OUTPUT_ENABLE OUT_AUX1 OUT_AUX2 INPUT_ENABLE IN_AUX1 INPUT_EVENT_ENABLE
1 MIC_AC#/DC PCSPK PCSPK X Controls the AC/DC input on the microphone X
2 GPIO2 IRQ15 X Reads memory strap X
3 VGA SCL - - EDID line - not needed for XO machine
4 VGA SDA - - EDID line - not needed for XO machine
5 DCONSTAT0 X DCON status pin (1 of 2) X
6 DCONSTAT1 DCONMODE> X DCON status pin (2 of 2) X
7 DCONIRQ PCI_INTB X DCON Interrupt PIN X X
8 UART1_TX X UART Transmit X X
9 UART1_RX X UART Receive X X
10 THERM_ALARM N/C X Thermal Alarm input X X
11 DCONLOAD P/U X Output indicator for DCON X
12 DCONBLNK X DCON Signal X
13 SMI# X SMI# pin to the GX X
14 SMB_CLK - - SMBus clock - X - X
15 SMB_DATA - - SMBus data - X - X
16 LPC_AD0 - - Defaults to LPC - no GPIO control
17 LPC_AD1 - - Defaults to LPC - no GPIO control
18 LPC_AD2 - - Defaults to LPC - no GPIO control
19 LPC_AD3 - - Defaults to LPC - no GPIO control
20 LPC_DRQ_L - - Defaults to LPC - no GPIO control
21 LPC_SERIRQ - - Defaults to LPC - no GPIO control
22 LPC_FRAME_L - - Defaults to LPC - no GPIO control
24 WORK_AUX X Controls MAIN_ON (which controls VCORE_CPU) X X
25 SWI# X Unknown - line comes from GPIO2 on the EC
26 PWR_BUT_in N/C X Lid event X X
27 SCI# X SCI from the EC for power and battery events X X
28 PWR_BUT# X Power button input X X

Changes

Jan 15, 2007 (B2)

  • GPIO1 changes from AC_BEEP to MIC_AC#/DC output
  • GPIO10 changes from unused to THRM_ALARM input
  • GPIO26 changes from unused to PWR_BUT_in input
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