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Sony BKPF-L752 Maintenance Manual page 19

Audio d/a converter board
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IC
TC74VHC08FT(EL) (TI)
C-MOS QUAD 2-INPUT AND GATES
—TOP VIEW—
14
13
12
11
10
9
8
V
DD
A
B
Y = A • B =
A
GND
0
1
2
3
4
5
6
7
0
1
1
BKPF-L752
A
Y =
Y
B
A
B
+
B
Y
0
0
1
0
0
0
0
: LOW LEVEL
1
1
1
: HIGH LEVEL
CS8412-CS (CRYSTAL)
CS8412-IS-E1 (CRYSTAL)
CS8412-IS-E2
DIGITAL AUDIO INTERFACE RECEIVER
—TOP VIEW—
C OUT
1
28
VERF OUT
Cd/F1
2
27
Ce/F2
Cc/F0
3
26
S DATA OUT
Cb/E2
4
25
ERF OUT
Ca/E1
5
24
M1
C0/E0
6
23
M0
7
V D
V
A
22
8
D GND
A GND
21
RXP
9
20
FILT OUT
RXN
10
19
MCK OUT
F SYNC
11
18
M2
SCK
12
17
M3
CS12/FCK
13
16
SEL
U OUT
14
15
CBL OUT
INPUT
RXP
; RECEIVE POSITIVE
RXN
; RECEIVE NEGATIVE
CS12/FCK
; CHANNEL SELECT/FCLOCK
SEL
; FREQUENCY/CS SELECT
M0
; SERIAL PORT MODE SELECT0
M1
; SERIAL PORT MODE SELECT1
M2
; SERIAL PORT MODE SELECT2
M3
; SERIAL PORT MODE SELECT3
OUT PUT
S DATA
: SERIAL DATA
C
: CHANNEL STATUS
U
: USER DATA
VERF
: VALIDITY + ERROR FLAG
CBL
: CS BLOCK START
ERF
: ERROR FLAG
Ce/F2
: CS e/FREQUENCY REPORT2
Cd/F1
: CS d/FREQUENCY REPORT1
Cc/F0
: CS c/FREQUENCY REPORT0
Cb/E2
: CS b/ERROR CONDITION2
Ca/E1
: CS a/ERROR CONDITION1
0
C0/E0
: CS
/ERROR CONDITION0
MCK
: MASTER CLOCK
FILT
: FILTER
INPUT/OUTPUT
FSYNC
: FRAME SYNC
SCK
: SERIAL DATA CLOCK
9
RXP
RS422
CLOCK&DATA
10
RECEIVER
RECOVERY
RXN
MUX
MUX
13
16
6
5
4
3
9
26
RXP
S DATA
10
RXN
1
C
14
U
13
28
CS12/FCK
VERF
16
15
SEL
CBL
25
ERF
23
27
M0
Ce/F2
24
2
M1
Cd/F1
18
3
M2
Cc/F0
17
4
M3
Cb/E2
5
Ca/E1
6
C0/E0
19
MCK
20
FILT
11
F SYNC
12
SCK
26
S DATA
AUDIO
12
SERIAL
SCK
PORT
11
F SYNC
DE.MUX
1
C
14
REGISTER
U
28
VERF
2
27
25
15
4-3
IC

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