Sega CD II - Page 23

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IC202 16Blt DIA Converter
IC LC78815M
•Top View
20
0
• Description
Pin
Name
1/0
Function
No.
I
CHI OUT 0
CH -I output. (L-ch)
2
REFH
- Reference voltage "H".
11
10
3
YrefH
- Reference voltage "H" input.
4
AVDD
-
Supply voltage of analog circuits.
5
LRCK/WCLK
I
LR clock/word clock input .
6 DAT AL
I
Digital audio data input.
7
DAT AR I
Digital audio data input.
8
BCLK I
Bit clock input.
9 SYSCLK I
System clock input.
IO
DYDO
-
Supply voltage of digital circuits.
11
TSTOUT
0
Test output.
IC203/204 Quad Operational Amplifier
IC NJM3403AM
•Top View
14 8
0
7
IC205 Dual Operational Amplifier
IC NJM3404AM
•TopView
8 5
0
4
•Pin Layout
vcc
8
Pin
Name
110
Function
No.
"L " : Digital audio data is input from
the DAT
AL and DAT AR pins
12
FSEL
- simultaneously.
"H" : Digital audio data
is input from
the DAT
AL pin by time-sharing.
13
MODEi
-
Interface switching.
14
MOCE2
15 DGND
-
Ground of digital circuits.
16 REFL
-
Reference voltage "L".
17
AGND
-
Ground of analog circuits.
18 VrefL
-
Reference voltage "L" input.
19 NC
-
Not connected.
20
CH20UT
0
CH-2 output. (R-ch)
•Pin Layout
4
vcc
VDD
11
4
VDD
27