37
ZS-YN7
•
IC Pin Function Description
CD BOARD IC702 CXD3029R (CD DSP)
Pin No.
Pin Name
I/O
Description
1
XRAS
O
Row address strobe signal output to the D-RAM
2
XWE
O
Data input enable signal output to the D-RAM
3 to 6
D1, D0, D3, D2
I/O
Two-way data bus with the D-RAM
7, 8
TEST1, TEST2
O
Not used
9
XCAS
O
Column address strobe signal output to the D-RAM
10
WFCK
O
Not used
11 to 13
A9 to A7
O
Address signal output to the D-RAM
14
DVSS
—
Ground terminal
15 to 17
A6 to A4
O
Address signal output to the D-RAM
18
XRDE
I
Read enable signal input from the MP3 decoder
19
VDD0
—
Power supply terminal (+3.3V)
20
CLOK
I
Serial data transfer clock signal input from the system controller
21
DATA
I
Serial data input from the system controller
22
SENS
O
SENS signal output to the system controller
23
XLAT
I
Serial data latch pulse signal input from the system controller
24
XSOE
I
Serial data output enable signal input from the system controller
25
SYSM
I
Analog muting on/off control signal input from the system controller “H”: muting on
fixed at “L” in this set
26
WDCK
O
Not used
27
SCOR
O
Subcode sync (S0+S1) detection signal output to the system controller
28
XRST
I
Reset signal input from the system controller “L”: reset
29
PWMI
I
Not used
30
XQOK
I
Not used
31
XWRE
I
Not used
32
R8M
O
System clock output terminal Not used
33
VSS0
—
Ground terminal
34
SQCK
I
SQSO readout clock signal input terminal Not used
35
SCLK
I
SENS serial data read clock signal input terminal Not used
36
SQSO
O
Not used
37
XEMP
O
Not used
38
XWIH
O
Not used
39
SBSO
O
Not used
40
EXCK
O
SQSO readout clock signal output terminal Not used
41
XTSL
I
Input terminal for the system clock frequency setting fixed at “L” in this set
42
HVSS
—
Ground terminal
43
HPL
O
Not used
44
HPR
O
Not used
45
HPVDD
—
Power supply terminal (+3.3V)
46
XVDD
—
Power supply terminal (+3.3V)
47
XTAI
I
System clock input terminal (16.9344 MHz)
48
XTAO
O
System clock output terminal (16.9344 MHz)
49
XVSS
—
Ground terminal
50
AVDD1
—
Power supply terminal (+3.3V)
51
AOUT1
O
L-ch analog audio signal output terminal
52
VREFL
O
L-ch reference voltage output terminal
