DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
DSB75_hd_v12
Page 42 of 96
2008-08-26
Table 16: Pin assignment of the USC/DAI interface X703
PCM Interface
Type Approval DAI
Signal name
Pin
I/O
I/O
Remark
5V0 1
O
O
5.0V supply for external
circuit
VDD 2
O
O
2.9V supply for external
circuit
DAI0 (USC0)
3
TXDAI
(Master/Slave)
O Clock
104kHz O
DAI1 (USC1)
4
RXDAI
(Master/Slave)
I RX
I Optional:
FS_OUT
DAI2 (USC2)
5
FS (Master)
O
TX
O
DAI3 (USC3)
6
BITCLK (Master) O
Reset
I
DAI4 (USC4)
7
FSIN (Slave)
I
Test1
I
DAI5 (USC5)
8
BCLKIN (Slave)
I
Test2
I
DAI6
(USC6)
9 nc
I Reset2
I
GND
10
-
- -
- Ground
Master and Slave capabilities of the DAI are product specific. Please refer to [1], [2] and [3]
to make sure whether your GSM module supports these features.
3k3
6k8
USC0
USC2
USC1
USC6
3
5
4
9
10
24
23
25
22
12
DSB75
X703
25 pole
D-Sub
10 pole
GSM
audio tester
(e.g. R&S UPL16)
with
GSM 11.10
DAI interface
DAI adapter
5V0 1
e.g.
74HCT4050
2x
2
2
2x
2x
Figure 20: Example for connecting measurement equipment
