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3.3 USIM Card Interface
The module provides a USIM card interface complying with the ISO 7816-3 standard and supports both Class
B and Class C USIM cards.
Ta
e 3
IM card interface signals
bl
-5 US
Pin No.
Pin Name
Q24
SIM0_RST
P23
SIM0_DATA
Q22
SIM0_CLK
3.4 Audio Interface
The module provides one PCM (Pulse Code Modulation) digital audio interface.
Table 3-6 Signals on the digital audio interface
Pin No.
Pin Name
B7
SPEECH_I2S
_LRCK_CP
C8
SPEECH_I2S
_D_IN_CP
B9
SPEECH_I2S
_D_OUT_CP
C6
SPEECH_I2S
_BCK_CP
The module PCM interface enables communication with an external codec to support linear format.
Figure 3-4 Recommended circuit diagram of the PCM interface(The module is used as PCM
master)
© SAMSUNG Electronics Co., Ltd. Confidential & Proprietary
Pad Type
Description
O
USIM card reset
I/O
USIM card data
O
US
Pad Type
Description
I
PCM interface
L/R Channel
I
PCM interface
data in
O
PCM interface
data out
I
PCM interface
clock
Module
PCM_SYNC
PCM_DIN
PCM_DOUT
PCM_CLK
M card clock
I
Typ. (V)
1.8
1.8
1.8
1.8
Comments
The pin is output when the
module is used as PCM
aster.
m
-
-
The pin is output when the
module is used as PCM
master.
CODEC
PCM_SYNC
PCM_OUT
PCM_IN
PCM_CLK
Typ. (V)
1.8/2.85
1.8/2.85
1.8/2.85
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