Electrical Specification Of The Interface - TDK Module blu2i User Manual

3

Electrical 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
1 Analogue 0
3 Analogue 1
5 SPI_MISO
7 SPI_CSB
9 SPI_CLK
11 GND
13 RESET
15 GND
17 SPI_MOSI
19 UART_CTS
21 UART_TX
23 UART_RTS
25 UART_RX
27 VCC_3V3
29 VCC_5V
31 N/C
33 N/C
35 N/C
37 N/C
39 VCC_1V8
Description Pin
1.8v Max 2
1.8v Max 4
SPI bus serial 6
O/P
SPI bus chip 8
select I/P
SPI bus clock 10
I/P
12
Reset I/P 14
16
SPI bus serial 18
I/P
Clear to Send 20
I/P
Transmit Data 22
O/P
Request to 24
Send O/P
Receive Data 26
I/P
3.3V Output 28
(Note 3)
3.6V < VIN < 30
6.0V
32
34
36
38
1.8V Output 40
(Note 3)
9 of 36
Signal Description
GPIO1 I/O for Host
GPIO2 I/O for Host
UART_RI 'Ring' Input or
Output
UART_DCD Input or Output
UART_DSR Input
GPIO3/UART I/O for Host
_DTR
GPIO4 I/O for Host
(Right LED)(2)
GPIO5 I/O for Host (Left
LED) (2)
GND
PCM_CLK PCM Clock I/P
PCM_IN PCM Data I/P
PCM_SYNC PCM Sync I/P
PCM_OUT PCM Data O/P
N/C
GND
RESERVED Do not connect
RESERVED Do not connect
GND
GND
N/C