Aiwa XP-SP920ALH, Service Manual

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1 COM03 O LCD common output.
2 COM02 O LCD common output.
3 COM01 O LCD common output.
4 COM00 O LCD common output.
5 VLC3 – LCD drive voltage setting terminal.
6 VLC2 – LCD drive voltage setting terminal.
7 VLC1 – LCD drive voltage setting terminal.
8 VDD – LCD power.
9
OSC2 O
Micon main clock oscillator output. (Not used)
10 OSC1 O Micon main clock oscillator output.
11 VSS – GND.
12 XI I Sub-clock oscillator. (Connected to GND)
13 XO O Sub-clock oscillator. (Not used)
14 MMOD I Processor mode unused. (Connected to GND)
15 VREF- – Connected to GND.
16 K-FUNC I "FUNCTION" key input. Refer to A/D TABLE-1.
17 K-P/S I "PLAY" and "STOP" key input. Refer to A/D TABLE-2.
18 ACIN I AC adaptor detection.
19 VDIN I Main clock (8 MHz).
20 K-RMC I Wired remote control input. Refer to A/D TABLE-2.
21 SWDO I Digital out "ON/OFF" input. ON at "L". (Connected to GND)
22 SWEASS I EASS mode selection input. Refer to A/D TABLE-1.
23 SWR/H I Resume/Hold switch input.
24 VREF+ – Connected to VDD.
25 MDATA O DSP MDATA output.
26 STAT I DSP STAT input.
27 MCLK O DSP MCLK output.
28 MLD O DSP MLD output.
29 SUBQ O Power down output for H/A.
30 SQCK O Selection output for EASS gain control. EASS at "L".
31 BEEP O Buzzer output for headphone.
32 RST I Micro computer reset input.
33 NRST O DSP reset output.
34 SWIL I Limited switch input.
35 PC O Power off output for CD server driver. Power off at "L".
36 CDRW O CD RW play gain level selection output. Gain set at "H".
37 NC – Not connected.
38 BLKCK I DSP BLKCK input.
39 RSENSOR I Wireless remote control sensor signal input. (Not used)
40 EASS – Not used.
41 SP-2/3 – Not used.
Pin No. Pin Name I/O Description
IC DESCRIPTION
IC, MN101C439AL
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