GPIO Map: Difference between revisions

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(Mark 27 as the SCI line from the EC)
(Update map for B2)
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== Current GPIO Map ==
This map details the usage of each GPIO pin on the 5536. (Last updated January 09, 2007 for B1):
This map details the usage of each GPIO pin on the 5536. (Last updated January 15, 2007 for B2):


{| border="1"
{| border="1"
! PIN !! Usage !! Input !! Output !! Notes !! OUTPUT_ENABLE !! OUT_AUX1 !! OUT_AUX2 !! INPUT_ENABLE !! IN_AUX1 !! INPUT_EVENT_ENABLE
! PIN !! Usage !! Input !! Output !! Notes !! OUTPUT_ENABLE !! OUT_AUX1 !! OUT_AUX2 !! INPUT_ENABLE !! IN_AUX1 !! INPUT_EVENT_ENABLE
|-
|-
|1 || AC_BEEP || || X || Connected to PCSPK || X || X || || || ||
|1 || MIC_AC#/DC || X || || Controls the AC/DC input on the microphone || X || || || || ||
|-
|-
|2 || GPIO2 || X || || Reads memory strap || || || || X || ||
|2 || GPIO2 || X || || Reads memory strap || || || || X || ||
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|9 || UART1_RX || || X || UART Receive || || || || X || X ||
|9 || UART1_RX || || X || UART Receive || || || || X || X ||
|-
|-
|10 || UNUSED || - || - || Goes to test point
|10 || THERM_ALARM || X || || Thermal Alarm input || || || || X || X ||
|-
|-
|11 || DCONLOAD || || X || Output indicator for DCON || X || || || || ||
|11 || DCONLOAD || || X || Output indicator for DCON || X || || || || ||
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|22 || LPC_FRAME_L || - || - || Defaults to LPC - no GPIO control
|22 || LPC_FRAME_L || - || - || Defaults to LPC - no GPIO control
|-
|-
|24 || WORK_AUX || || X || Xontrols 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 || - || - || - || Unknown - line is SWI# goes into GPIO2 on the EC
|-
|-
|26 || UNUSED || - || - || Goes to test point
|26 || PWR_BUT_in || 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
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|28 || PWR_BUT# || X || || Power button input || || || || 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


[[Category:Hardware]]
[[Category:Hardware]]

Revision as of 22:58, 15 January 2007

Current GPIO Map

This map details the usage of each GPIO pin on the 5536. (Last updated January 15, 2007 for B2):

PIN Usage 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
2 GPIO2 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 X DCON status pin (2 of 2) X
7 DCONIRQ 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 X Thermal Alarm input X X
11 DCONLOAD 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 X
15 SMB_DATA - - SMBus data X 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 - - - Unknown - line is SWI# goes into GPIO2 on the EC
26 PWR_BUT_in 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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