71
HCD-DH3/DH5BT/DH7BT
Pin No.
Pin Name
I/O
Description
82
NO USE
O
Not used
83
DVSS
-
Ground terminal
84
DO
O
Clear to send signal output to the system controller
85
DATA
O
Serial data output terminal Not used
86
CLOCK
O
Serial data transfer clock signal output terminal Not used
87
TXD1
O
Serial data output to the system controller
88
RXD1
I
Serial data input from the system controller
89
NO USE
O
Not used
90
SDA
I/O
Two-way EEPROM IIC data bus terminal Not used
91
SCL
I/O
Two-way EEPROM IIC clock bus terminal Not used
92
BCK
O
Bit clock signal output to the MP3 processor
93
DATA
O
Audio data output to the MP3 processor
94
GATE
O
Gate signal output to the MP3 processor
95
DVCC
-
Power supply terminal (+3.3 V)
96
REQ
I
Request signal input from the MP3 processor
97
ST-REQ
I
Request signal input from the MP3 processor
98, 99
G-1, G-2
I
Function selection signal input terminal Fixed at "L" in this set
100
DVSS
-
Ground terminal
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8
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9
2
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9
4
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9
8
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5
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7
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