3Electrical specification of the interface

The Hirose DF12C board to board connector on the module is a 40 way double-row receptacle. The pin allocation is as follows:

Pin

Signal

Description

1

Analogue 0

1.8v Max

3

Analogue 1

1.8v Max

5

SPI_MISO

SPI bus serial

 

 

O/P

7

SPI_CSB

SPI bus chip

 

 

select I/P

9

SPI_CLK

SPI bus clock

 

 

I/P

11

GND

 

 

 

 

13

RESET

Reset I/P

 

 

 

15

GND

 

 

 

 

17

SPI_MOSI

SPI bus serial

 

 

I/P

19

UART_CTS

Clear to Send

 

 

I/P

21

UART_TX

Transmit Data

 

 

O/P

23

UART_RTS

Request to

 

 

Send O/P

25

UART_RX

Receive Data

 

 

I/P

27

VCC_3V3

3.3V Output

 

 

(Note 3)

29

VCC_5V

3.6V < VIN <

 

 

6.0V

31

N/C

 

33

N/C

 

35

N/C

 

37

N/C

 

39

VCC_1V8

1.8V Output

 

 

(Note 3)

Pin

Signal

Description

2

GPIO1

I/O for Host

4

GPIO2

I/O for Host

6

UART_RI

‘Ring’ Input or

 

 

Output

8

UART_DCD

Input or Output

 

 

 

10

UART_DSR

Input

 

 

 

12

GPIO3/UART

I/O for Host

 

_DTR

 

14

GPIO4

I/O for Host

 

 

(Right LED)(2)

16

GPIO5

I/O for Host (Left

 

 

LED) (2)

18

GND

 

 

 

 

20

PCM_CLK

PCM Clock I/P

 

 

 

22

PCM_IN

PCM Data I/P

 

 

 

24

PCM_SYNC

PCM Sync I/P

 

 

 

26

PCM_OUT

PCM Data O/P

 

 

 

28

N/C

 

 

 

 

30

GND

 

 

 

 

32

RESERVED

Do not connect

34

RESERVED

Do not connect

36

GND

 

38

GND

 

40

N/C

 

 

 

 

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