GPIO Map
Revision as of 17:13, 10 March 2007 by 64.203.28.184 (talk) (SMB lines must be enabled as both input and outpu)
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 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||
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 | |||||||||
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