Intel PXA26X - Manual (Page 112)

4-4 Intel® PXA26x Processor Family Developer’s Manual
System Integration Unit
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
Table 4-1. GPIO Alternate Functions (Sheet 2 of 5)
Pin
Alternate
Function Name Alternate Function
Assignment AF{n}
encoding
Source Unit Signal Description and comments