Harman Kardon TU 970II/230, Service Manual

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IC71 FUNCTION (MI-COM S3F84BB)
Pin No. PIN NAME I/O DESCRIPTION
1~8 FIP-DA O FIP Data output port
9 N.C - Non connection
10 SINO I UART Data input port
11 SOTO O UART Data output port
12 VDD1 I Power supply port(+5V)
13 VSS1 I GND
14 XTOUT O
10MHz crystal connection port
15 XIN I
16 TEST I Back-up Input
17,18 N.C - Non connection
19 RESET I Reset input port("L")
20 N.C - Non connection
21 DAB_DIN I DAB Data input port
22 DAB_DOUT O DAB Data output port
23 DAB_CLK O DAB Clock control port("L")
24 FM/AM_MUTE O FM/AM MUTE control port("L")
25 PLL_DATA O PLL Data output port
26 PLL_CE O PLL Enable control port
27 PLL_CLK O PLL Clock control port
28 STEREO I Tuner module stereo control port
29 TUNED I Tuner module tuned control port
30 PLL_DIN I PLL Data input port
31 RDS_CLK O RDS Clock control port
32 RDS_DATA I RDS Data input port
33 BACK_UP I BACK-UP mode control port("L")
34 REMOTE_IN I Remote unit data input port
35~38 N.C - Non connection
39,40 GND I GND
41 SCROLL_UP I Scroll up control port
42 SCROLL_DN I Scroll down control port
43 VREF I A/D converter reference voltage
44 AVSS I
GND
45 GND I
46 KEY3 I
47 KEY2 I
48 KEY1 I KEY 1 control port
49~51 N.C - Non connection
52 VSS2 I GND
53 VDD2 I Power supply port(+5V)
54 SYSTEM_MUTE O System MUTE control port("L")
55 STAND_BY O Standby on control port("L")
56 FM/AM_ON O FM/AM on control port("L")
57 N.C - Non connection
58 POWER_ON O Unit turn on control port("L")
59~64 N.C - Non connection
65~68 OPTION I GND or OPEN
69~70 N.C - Non connection
71 OPTION I GND or OPEN
72~74 N.C - Non connection
75 OPTION I GND or OPEN
76~77 N.C - Non connection
78 RS_P O Register selection port
79 WRITE O Write enable port
80 READ O Read enable port
harman/kardon TU 970II/230 Service Manual
Page 15 of 21