NAD T 752 - 74 Lvc245; 74 Hcu04; 74 Vhc245; W27 C020

37
74LVC245
DSP BOARD: U1002, U1003, U1014
74VHC245
KEYBOARD: U209
1
2
3
4
5
6
7
8
9
10
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
20
19
18
17
16
15
14
13
12
11
VCC
G
B1
B2
B3
B4
B5
B6
B7
B8
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(11)
(19)
(18)
(17)
(16)
(15)
(14)
(13)
(12)
OE
CK
D0 1D
C1
EN
D1
D2
D3
D4
D5
D6
D7
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
74LVC574
DSP BOARD: U1008, U1009
SCL/CCLK SDA/CDIN VD
AOUT1
LRCK
SCLK
SDIN1
SDOUT
SERIAL AUDIO
DATA INTERFACE
CONTROL PORT
DIGITAL FILTERS
WITH DE-EMPHASIS
ANALOG LOW PASS AND
OUTPUT STAGE
VA
AOUT2
AINL+
AINL-
SDIN2
MCLK
AOUT3
AOUT4
AINR+
AINR-
LEFT ADC
SDIN3
MUTEC
AD0/CS
RST
FILT
AOUT5
AOUT6
DIGITAL FILTERS
VL
RIGHT ADC
DAC #1
DAC #2
DAC #3
DAC #4
DAC #5
DAC #6
CLOCK MANAGER
MUTE CONTROL
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DGND AGND
CS4228
DSP BOARD: U1021
W27C020
DSP BOARD: U1007
Q0
Q7
CE
OE
A0
CONTROL
OUTPUT
BUFFER
CORE
ARRAY
DECODER
PGM
VCC
GND
VPP
A17
31
22
24
74HCU04
DSP BOARD: U1006 & U1016
1A
1Y
2A
2Y
3A
3Y
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
6A
V
CC
6Y
5A
5Y
4A
4Y