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System Introduction 1-23
Table 1-13 GPIO Port Definition Map II
GPIO I/O Description
P1.7 (IS5_IRQ12) O IRQ12
P2.0 (KB5_MEMB0A0) I Address 0 of memory bank 0
P2.1 (KB5_MEMB0A1) I Address 1 of memory bank 0
P2.2 (KB5_MODE) I Detect KBD mode (1:US/EC 0:Japan)
P2.3 I NC
P2.4 (KB5_MEMB1A0) I Address 0 of memory bank 1
P2.5 (KB5_PSWD) I Enable Password
P2.6 (KB5_MEMB1A1) I Address 1 of memory bank 1
P2.7 (PX3_OEM0) I Address 1 of memory bank 1
P3.0 (SM5_TXD) I Receiving data from SMC to KBC
P3.1 (SM5_RXD) O Transmitting data from KBC to SMC
P3.2 (KB5_KBDCLK) O External KB clock
P3.3 (KB5_PTRCLK) O External PS/2 clock
P3.4 (KB5_KBDDAT) O External KB data
P3.5 (KB5_PTRDAT) O External PS/2 data
P3.6 (KB5_TOUCHWR*) O Write enable touch pad data
P3.7 (KB5_TOUCHRD*) O Read enable touch pad data
ANI0 (KB5_PANID0) I Panel ID
ANI1 (KB5_PANID1) I Panel ID
ANI2 (KB5_PANID2) I Panel ID
ANI3 (KB5_PANID3) I Panel ID: 3 2 1 0 0 0 0 0 12.1” TFT
GPIO Pin Assignment: 83C552
P0.0(SM5_CHARGEON#) O Charge control enable
P0.1 O NC
P0.2 (SM5_BMCPWREN#) O BMC VCC power enable
P0.3 (SM5_P3/5VRON#) O 3V and 5V power on
P0.4 (SM5_SUSPEND) O Suspend control enable
P0.5 (SM5_PWRLED#) O Power LED
P0.5 (SM5_PWRLED#) O Battery LED
P0.7 (SM5_SMIREQ#) O SMC SMI request
P1.0 (SI5_PNF) I Detect Printer or external FDD 0: FDD 1: Printer
P1.1 (SM5_1WIRE) IO Dallas protocol
P1.2 (SM5_UNDOCK_REQ#) I Undocked request
P1.3 (PX3_CPUSTP#) I Detect CPU clock stop
P1.4 (SM5_ATN#) IO I2C inturrupt
P1.5 (SM5_RST#) IO I2C reset
P1.6 (SM5_CLK#) IO I2C clock
P1.7 (SM5_DAT#) IO I2C data