Intel PXA27x User Manual page 82

Table 33. GPIO Map (Sheet 2 of 4)
GPIO Alternate Functions Direction Description
AC97_BITCLK /
28
I2S_BITCLK
AC97_SDATA_IN /
29
I2S_SDATA_IN
AC97_SDATA_OUT /
30
I2S_SDATA_OUT
AC97_SYNC /
31
I2S_SYNC
MMCLK /
32
MSSCLK
33 nCS5
34 FFRXD/USB_P2_2
35 FFCTS/USB_P2_1
36 FFDCD/USB_P2_4
37 FFDSR
38 FFRI/USB_P2_3
39 FFTXD/USB_P2_6
40 FFDTR/USB_P2_5
41 FFRTS
42 BTRXD
43 BTTXD
44 BTCTS
45 BTRTS
46 ICP_RXD
47 ICP_TXD
48 BB_OB_DAT1
49 nPWE
nPIOR /
50
BB_OB_DAT2
nPIOW /
51
BB_OB_DAT3
52 BB_OB_CLK
53 BB_OB_STB
BB_OB_WAIT /
54
PCMCIA_nPCE[1]
nPREG /
55
BB_IB_DAT1
nPWAIT /
56
BB_IB_DAT2
82
I/O Audio CODEC bit-rate clock
I Audio CODEC serial input
O Audio CODEC serial output
O Audio CODEC frame indicator / left-right identifier
O MMC and SD bus clock / Memory Stick* clock
O Static chip select for expansion board
I FFUART serial data input / USB OTG
I/O FFUART clear to send / USB OTG
FFUART data carrier detect / SSPSCLK2 direction depends on
I/O
usage / USB OTG
FFUART data set ready / SSPSFRM2 — direction depends on
I/O
usage
FFUART ring indicator / SSPTXD2 direction depends on usage /
I/O
USB OTG
O FFUART serial data output / USB OTG
FFUART data terminal ready / SSPRXD2 direction depends on
I/O
usage / USB OTG
O FFUART request to send
I Bluetooth* UART serial data input
O Bluetooth* UART serial data output
I Bluetooth* UART clear to send
O Bluetooth* UART request to send
I Infrared serial data input
O Infrared serial data output
O Baseband outbound data bits
O PCMCIA card interface attribute write enable
PCMCIA interface I/O space output enable / baseband outbound
O
data bit
PCMCIA interface I/O space write enable / baseband outbound
O
data bit
Baseband outbound clock strobe / SSPSCLK3 — direction
I/O
depends on usage
O Baseband outbound signal qualifier
I/O Baseband wait indicator for outbound link / PCMCIA
I/O PCMCIA attribute space select / baseband inbound data bit
I PCMCIA interface wait / baseband inbound data bit
®
Intel PXA27x Processor Developer's Kit - User's Guide