Intel PXA26X User Manual

4-4

GP28

BITCLK

ALT_FN_1_IN

01

AC97 Controller Unit

AC97 bit_clk

BITCLK

ALT_FN_2_IN

10

I2S Controller

I2S bit_clk

BITCLK

ALT_FN_1_OUT

01

I2S bit_clk

ASSPSCLK

ALT_FN_3_IN

11

Audio SSP

ASSP serial clock

ASSPSCLK

ALT_FN_3_OUT

11

ASSP serial clock

GP29

SDATA_IN0

ALT_FN_1_IN

01

AC97 Controller Unit

AC97 Sdata_in0

SDATA_IN

ALT_FN_2_IN

10

I2S Controller

I2S Sdata_in

ASSPRXD

ALT_FN_3_IN

11

Audio SSP

ASSP receive data

GP30

SDATA_OUT

ALT_FN_1_OUT

01

I2S Controller

I2S Sdata_out

SDATA_OUT

ALT_FN_2_OUT

10

AC97 Controller Unit

AC97 Sdata_out

ASSPTXD

ALT_FN_3_OUT

11

Audio SSP

ASSP transmit data

GP31

SYNC

ALT_FN_1_OUT

01

I2S Controller

I2S sync

SYNC

ALT_FN_2_OUT

10

AC97 Controller Unit

AC97 sync

ASSPSFRM

ALT_FN_1_IN

01

Audio SSP

ASSP frame

ASSPSFRM

ALT_FN_3_OUT

11

ASSP frame

GP32

SDATA_IN1

ALT_FN_1_IN

01

AC97 Controller Unit

AC97 Sdata_in1

SYSCLK 

ALT_FN_1_OUT 

01

I2S Controller 

I2S System Clock

USB_VP

ALT_FN_2_IN

10

Single Ended USB

USB Device Controller VP

GP33

nCS[5]

ALT_FN_2_OUT

10

Memory Controller

Active low chip select 5

GP34

FFRXD

ALT_FN_1_IN

01

UARTs

FFUART receive

MMCCS0

ALT_FN_2_OUT

10

Multimedia Card 
(MMC) Controller

MMC Chip Select 0

USB_VM

ALT_FN_2_IN

10

Single Ended USB

USB Device Controller VM

GP35

FFCTS

ALT_FN_1_IN

01

UARTs

FFUART Clear to send 

GP36

FFDCD

ALT_FN_1_IN

01

FFUART Data carrier detect

GP37

FFDSR

ALT_FN_1_IN

01

FFUART data set ready

GP38

FFRI

ALT_FN_1_IN

01

FFUART Ring Indicator

GP39

MMCCS1

ALT_FN_1_OUT

01

Multimedia Card 
(MMC) Controller

MMC Chip Select 1

FFTXD

ALT_FN_2_OUT

10

UARTs

FFUART transmit data

USB_VPO

ALT_FN_3_OUT

11

Single Ended USB

USB Device Controller VPO

GP40

FFDTR

ALT_FN_2_OUT

10

UARTs

FFUART data terminal Ready

GP41

FFRTS

ALT_FN_2_OUT

10

FFUART request to send

GP42

BTRXD

ALT_FN_1_IN

01

UARTs

BTUART receive data 

HWRXD

ALT_FN_3_IN

11

Hardware UART

HWUART receive data 

GP43

BTTXD

ALT_FN_2_OUT

10

UARTs

BTUART transmit data

HWTXD

ALT_FN_3_OUT

11

Hardware UART

HWUART transmit data