Intel PXA27x Series, User Manual

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