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Intel® PXA26x Processor Family Developer’s Manual 4-5
System Integration Unit
GP44
BTCTS ALT_FN_1_IN 01 UARTs BTUART clear to send
HWCTS ALT_FN_3_IN 11 Hardware UART HWUART clear to send
GP45
BTRTS ALT_FN_2_OUT 10 UARTs BTUART request to send
HWRTS ALT_FN_3_OUT 11 Hardware UART HWUART request to send
GP46
IRRXD ALT_FN_1_IN 01
Infrared
Communication Port
ICP receive data
STRXD ALT_FN_2_IN 10 UARTs STD_UART receive data
GP47
STTXD ALT_FN_1_OUT 01 UARTs STD_UART transmit data
IRTXD ALT_FN_2_OUT 10
Infrared
Communication Port
ICP transmit data
GP48
nPOE ALT_FN_2_OUT 10 Memory Controller Output Enable for Card Space
HWTXD ALT_FN_1_OUT 01 Hardware UART HWUART transmit
GP49
nPWE ALT_FN_2_OUT 10 Memory Controller Write Enable for Card Space
HWRXD ALT_FN_1_IN 01 Hardware UART HWUART receive
GP50
nPIOR ALT_FN_2_OUT 10 Memory Controller I/O Read for Card Space
HWCTS ALT_FN_1_IN 01 Hardware UART HWUART Clear to send
GP51
nPIOW ALT_FN_2_OUT 10 Memory Controller I/O Write for Card Space
HWRTS ALT_FN_1_OUT 01 Hardware UART HWUART Request to Send
GP52 nPCE[1] ALT_FN_2_OUT 10 Memory Controller Card Enable for Card Space
GP53
nPCE[2] ALT_FN_2_OUT 10 Memory Controller Card Enable for Card Space
MMCCLK ALT_FN_1_OUT 01
Multimedia Card
(MMC) Controller
MMC Clock
GP54
MMCCLK ALT_FN_1_OUT 01
Multimedia Card
(MMC) Controller
MMC Clock
nPSKTSEL ALT_FN_2_OUT 10 Memory Controller Socket Select for Card Space
GP55 nPREG ALT_FN_2_OUT 10
Memory Controller
Card Address bit 26
GP56
nPWAIT ALT_FN_1_IN 01 Wait signal for Card Space
USB_VMO ALT_FN_1_OUT 01 Single Ended USB USB Device Controller VMO
GP57
nIOIS16 ALT_FN_1_IN 01 Memory Controller Bus Width select for I/O Card Space
USB_nOE ALT_FN_1_OUT 01 Single Ended USB USB Device Controller nOE
GP58
LDD[0] ALT_FN_2_OUT 10
LCD Controller
LCD data pin 0
GP59
LDD[1] ALT_FN_2_OUT 10 LCD data pin 1
GP60
LDD[2] ALT_FN_2_OUT 10 LCD data pin 2
GP61
LDD[3] ALT_FN_2_OUT 10 LCD data pin 3
GP62
LDD[4] ALT_FN_2_OUT 10 LCD data pin 4
GP63
LDD[5] ALT_FN_2_OUT 10 LCD data pin 5
GP64
LDD[6] ALT_FN_2_OUT 10 LCD data pin 6
GP65
LDD[7] ALT_FN_2_OUT 10 LCD data pin 7
Table 4-1. GPIO Alternate Functions (Sheet 3 of 5)
Pin
Alternate
Function Name
Alternate Function
Assignment
AF{n}
encoding
Source Unit Signal Description and comments