View source for GPIO Map

== 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.

{| border="1"
<!--
|- 
! PIN !! B2 Usage !! B1 !! A !! Input !! Output !! Notes !! OUTPUT_ENABLE !! OUT_AUX1 !! OUT_AUX2 !! INPUT_ENABLE !! IN_AUX1 !! INPUT_EVENT_ENABLE
-->
|- style="background:lightgray"
| PIN || B2 Usage || B1 || A || In || Out || Notes || OUTPUT<br>_ENABLE || OUT<br>_AUX1 || OUT<br>_AUX2 || INPUT<br>_ENABLE || IN<br>_AUX1 || INPUT<br>_EVENT_ENABLE
|- 
|0 || PCI_INTA# || || || X || || PCI Interrupt || || || || X ||  || X ||
|- 
|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 ||
|-
|- style="background:lightgray"
| PIN || B2 Usage || B1 || A || In || Out || Notes || OUTPUT<br>_ENABLE || OUT<br>_AUX1 || OUT<br>_AUX2 || INPUT<br>_ENABLE || IN<br>_AUX1 || INPUT<br>_EVENT_ENABLE
|- 
|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 || || || X || X || SMBus clock || X || X || || X || X ||
|-
|15 || SMB_DATA || || || X || X || SMBus data || X || 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
|-
|- style="background:lightgray"
| PIN || B2 Usage || B1 || A || In || Out || Notes || OUTPUT<br>_ENABLE || OUT<br>_AUX1 || OUT<br>_AUX2 || INPUT<br>_ENABLE || IN<br>_AUX1 || INPUT<br>_EVENT_ENABLE
|- 
|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 ||
|-
|- style="background:lightgray"
| PIN || B2 Usage || B1 || A || In || Out || Notes || OUTPUT<br>_ENABLE || OUT<br>_AUX1 || OUT<br>_AUX2 || INPUT<br>_ENABLE || IN<br>_AUX1 || INPUT<br>_EVENT_ENABLE
|- 
|}

== 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]]