Sega CD II - Page 22

IC116 CMOS Quad Exclusive OR Gate
IC TC74HC86
•Top View & Pin Layout •Truth Table
1A A
18
48
H
1Y
4A
4Y
28
38
2Y
3A
3Y
IC201 18Bit Digital Filter & 16Bit DIA Converter
IC LC7883KM
•Top View
·-·-·-·-·-·-·-·-·-·-·-· 1
0
1 ·-·-·-·-·-·-·-·-·-·-·-· 1
• Description
Pin Name
1/0 Function
I CHI OUT
0
DAC CH-1 output.
2
VrefH
Reference voltage "H" input.
3 AVDD
Power supply
of analog circuits.
4 DYDD
-
' Power supply of digital circuits.
5
BLCK Bit clock.
Digital audio data input.
L
H
L
6 DATA Input from the MSB in the bit serial
state.
UR clock input.
7
LRCK
LRCK="H"CHl
LRCK= "L" CH2
8 TEST Test pin. (normally, set to "L")
9
ATT
Attenuator data input. Input from the
LSB in the bit serial state.
JO SHIFT
Attenuator data transfer clock input.
11 LATCH
Attenuator data latch clock input.
12
INITB
Initializing signal input.
(normally, set to "H")
13 TEST Test pin. (normally, set to "L")
26
B
H
H
L
L
Pin
Name
14
EMPH2
15 EMPHl
16
DIN
17
SOC2
18
SOC!
19
MODE
20
TEST
-
21
22 DGND
23 CLKOUT
24 XIN
25
XOUT
26 AGND
27 VrcfL
28
CH20UT
y
L
H
H
L
1/0
Function
I
De-emphasis setting pins.
I
Double/Normal speed switching pin.
Input source select inputs.
I
(PULL-OOWN)
I
Operation mode setting pin.
(PULL-OOWN)
I
Test pins. (normally, set to "L")
(PULL-OOWN)
-
Ground of digital circuits.
Clock output.
0
392Fs: 1/2 XOUT
384Fs, 448Fs,
512Fs: XOUT
I
Crystal oscillator input.
0
Crystal oscillator output.
-
Ground of analog circuits.
-
Reference voltage "L" input.
0
DAC CH-2 output.