NAD T 751 - AC3 Board IC Block Diagrams; CS8414, CS4340, 74 HC74 Block Diagrams

41
RXP
RS422
Receiver
Clock & Data
Recovery
De-Mux
Audio
Serial
Port
Registers
Mux
Mux
VD+ DGND VA+ VA+ FILT AGND MCK M3 M3 M2 M1 M0
SDATA
SCK
FSYNC
C
U
VERF
CS12/FCK SEL C0/E0 Ca/E1 Cb/E2 Cc/F0 Cd/F1 Ce/F2 REF CBL
RXN
9
10
13 16 6 5 4 3 2 27 25 15
28
14
1
11
12
26
232418171921202287
AC3 BOARD
U110: CS8414
AC3 BOARD
U111-U113: CS4340
AC3 BOARD
U115,U117, U120: 74HC74
RST
1
38 16
4
2
76 5
15
12
LRCK
SDATA
DIF0 DIF1 MCLK
MUTECDEM0
De-emphasis
External
Mute Control
Interpolation
Filter
DAC
Analog Filter
Interpolation
Filter
DAC
Analog Filter
SCLK/DEM1
AOUTR
AOUTL
SD RD
D
Q
1Q
GND
1Q
Q
FF1
CP
1SD 1D 1CP 1RD1
10 12 11 13 14
3 2 4
7 5 6 9 8
SD RD
D
Q
2Q 2Q
Q
FF2
CP
2SD 2D
VCC 2CP 2RD