NAD L76 Service Manual page 19

IC PIN FUNCTION (u-COM : ANAM1328AT,O.T.P : TMP87PS71AF) : IC81
PIN No. SYMBOL
1 -
2 REMOTE IN
3 RDS CLK
4 RDS DATA
5 Function Mute
6 EVOL Data
7 EVOL CLK
8 EVOL CE (STB)
9 Vpp (Test)
10 Volume 2
11 Volume 1
12 RESET
13 X IN
14 X OUT
15 Vss (GND)
16 Back Up
17 Function SW 2
18 Function SW 1
19 INTREQ
20 D OUT
21 OSD CS
22 Surr./OSD CLK
23 CS CS
24 Surr./OSD Data
25 AK CS
26 AK RESET
27 CS RESET
28 PLL Data In
29 Func. STB
30 CLK 3
31 DATA 3
32 PLL CE
33 VDD/VCC
34 ~ 35 Option/VFL Grid
36 ~ 43 VFL Grid
44 ~ 65 FIP Segment
66 Vkk
67 Option
68 Protect IN
69 Stereo IN
70 Tuned IN
71 OSD IN
72 Hphone IN
73 Video Mute
74 SP ON/OFF
75 Power ON/OFF
77, 78 KEY Matrix
79 STB
80 Tuner Mute
I/O
- Not Use (No connection)
I Remote Control Sensor Data Input
O
RDS IC (SA6579TV1) CLK/Data Port
I
O Function Mute Control Output port (Active "H")
O
O Electronic Vol. IC (TC9482F) Data/CLK/STB Port
O
- Program Supply Voltage (GND Connection)
I
Master Volume (ENCODER) UP/DOWN control port
I
I Reset Input Port ("L")
I
8MHz Cystal Connection Port
O
I Device GND Port
I Back Up Mode Control Port ("L")
I
Function Selector (ENCODER) Control port
I
I Interrupt Reguest Input Port
O CS493264-CL Data Input port
O ODS IC (ANAM2024V) Chip Selector Port
O Surr./OSD CLK Output port
O Chip Selector port for CS493264-CL
O Surr./OSD Data Output Port
O Chip Selector Port for AK4586VQ
O Reset (Initial Clear) Port for AK4586VQ
O Reset (Initial Clear) Port for CS493264-CL
I PLL IC (LC72131) Data Input Port
O Func. IC (KIC9163/64) Strobe Control Port
O Func./PLL IC CLK Control Port
O Func./PLL IC Data Control Port
O PLL IC (LC72131) Chip Enable Control Port
- Power Supply Port (+5V)
O Option Control Port/ VFL Grid Control Port
O VFL Grid Control Port
O VFL Segment Control Port
- VFL Power Supply Port (-30V)
I Option Control Port
I Protect Input Port ("L")
I Stereo Display Control Port ("L")
I Tuned Display Control Port ("L")
I ODS Input Control Port
I Headphone In/ Out Defect Port
O Videon Mute Control Port ("L")
I Speaker ON/OFF Control Port
O Power ON/OFF Control Port (Actire "L")
I Key Control Input Port
O Extended IC (NJU3713G) Strobe Control Port
O Tuner Mute Control Port
DESCRIPTION
2-12