NAD T 748, Service Manual

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TVDD
RXD_2– RXD_1– RXD_0– RXD_C– ARC_2–
TVDD
RXC_2– RXC_1– RXC_0– RXC_C–
NC TVDD
RXB_2– RXB_1– RXB_0– RXB_C– ARC_1–
GND
TVDD
RXD_2+ RXD_1+ RXD_0+ RXD_C+ ARC_2+
TVDD
RXC_2+ RXC_1+ RXC_0+ RXC_C+
NC TVDD
RXB_2+ RXB_1+ RXB_0+ RXB_C+ ARC_1+
GND
TVDD
PWRDN1
HPA_D
RXD_5V RXC_5V
TVDD GND GND GND GND GND GND TVDD TVDD TVDD TVDD TVDD TVDD
TVDD
SYNC_OUT
CEC HPA_C
RXB_5V
HPA_B TVDD
RXA_5V
HPA_A
DDCD_SDADDCD_SCLDDCC_SDADDCC_SCL
RTERM
DDCB_SDADDCB_SCL
TVDD
RXA_2+ RXA_2–
GND GND GND GND GND GND GND GND GND GND GND
VDD GND GND GND GND GND GND GND GND GND GND
VDD GND GND GND GND GND GND GND GND GND GND
VDD GND GND GND GND GND GND GND GND GND GND
VDD GND GND GND GND GND GND GND GND GND GND
VDD GND GND GND GND GND GND GND GND GND GND
VDD GND GND GND GND GND GND GND GND GND GND
VDD GND GND GND GND GND GND GND GND GND GND
VDD VDD VDD VDD VDD VDD VDD VDD GND GND GND
GND GND GND GND GND GND GND GND CVDD CVDD CVDD
GND GND GND GND TEST1 TEST2 GND GND CVDD CVDD CVDD
AVDD AVDD AVDD AVDD
TRI1 TRI2 SYNC3 AIN7
TRI4 TRI3 AIN9 AIN8
GND GND GND GND
HS_IN2/TRI7 VS_IN2/TRI8
SYNC4 AIN10
AVDD AVDD AIN11 AIN12
AVDD AVDD AVDD AVDD
GND GND REFN REFP
GND GND GND GND
PVDD GND XTALN XTALP
PVDD TEST3 GND GND
VGA_SDA
CVDD NC NC
VGA_SCL
CVDD
RXA_C+ RXA_C–
DDCA_SCL
CVDD
RXA_0+ RXA_0–
DDCA_SDA
CVDD
RXA_1+ RXA_1–
GND
DVDDIO
SDRAM_A7 SDRAM_A3 SDRAM_A10 SDRAM_BA0 SDRAM_WE VDD_SDRAM SDRAM_DQ3 SDRAM_VREF SDRAM_DQ14 SDRAM_DQ10 SDRAM_UDQS VDD_SDRAM
GND AIN1 AIN2 AIN3 GND
GND
DVDDIO
SDRAM_A8 SDRAM_A4 SDRAM_A0
SDRAM_BA1 SDRAM_CAS VDD_SDRAM
SDRAM_DQ4 SDRAM_DQ0 SDRAM_DQ13 SDRAM_DQ9
SDRAM_CK VDD_SDRAM
GND SYNC1
HS_IN1/TRI5
0
8
85
0-
00
7
VS_IN1/TRI6
GND
GND
VDD_SDRAM SDRAM_A9 SDRAM_A5 SDRAM_A1 SDRAM_RAS SDRAM_DQ7
GND
SDRAM_DQ5 SDRAM_DQ1 SDRAM_DQ12 SDRAM_DQ8 SDRAM_CK VDD_SDRAM
GND NC NC SYNC2 AIN4
GND
HS/CS
P0
P2
GND
P31
P29
P27
P25
LLC
DVDDIO
P22
P20
P18
P17
P15
DVDDIO
P13
P11
P9
P7
P5
DVDDIO
A
B
C
D
AC
AB
AA
Y
W
V
U
T
R
P
N
M
L
K
J
H
G
F
E
A
B
C
D
AC
AB
AA
Y
W
V
U
T
R
P
N
M
L
K
J
H
G
F
E
VS/FIELD
FIELD/DE
P1
P3
P33
P32
P30
P28
P26
P24
DVDDIO
P23
P21
P19
P16
P14
DVDDIO
P12
P10
P8
P6
P4
DVDDIO
TEST6
TEST8
TEST10
TEST12
P35
P34
GND
GND
NC
RESET
DVDDIO
TEST5
TEST4
SCL
AP2
AP4
GND
AP5
MCLK
TTX_SDA
EP_CS
EP_MISO
GND
TEST7
TEST9
TEST11 TEST14
TEST13
NC
NC
GND
GND
SPDIF_IN
AVLINK
DVDDIO
INT2
INT1
SDA
AP1
AP3
GND
SCLK
AP0
TTX_SCL
EP_SCK
EP_MOSI
GND
GND
VDD_SDRAM SDRAM_A11 SDRAM_A6 SDRAM_A2 SDRAM_CS SDRAM_LDQS
GND
SDRAM_DQ8 SDRAM_DQ2 SDRAM_DQ15 SDRAM_DQ11 SDRAM_CKE VDD_SDRAM
GND AOUT NC AIN5 AIN6
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IC 911 : ADV7844KBCZ (HDMI Processor & ADC & DECODER)
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
2-22