Kenwood KDC-2022V, Service Manual

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KDC-2022/V/202MR/4023
6
MICROCOMPUTER'S TERMINAL DESCRIPTION
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MECHANISM MICROCOMPUTER MN6627771KP (X32 : IC2)
Pin No. Name I/O Description Processing Operation
1 TVD O Traverse driver output (PWM output)
2 SPL O Spindle motor drive output (PWM output)
3 PC O Spindle motor ON output L:ON H:OFF (default )
4 PWM O multi-purpose PWM output It's possible to setup the TOSF2
5 TBAL O Tracking balance adjust output (PWM output)
6 FBAL O Focus balance adjust output (PWM output)
7 NRFDET I RF detection signal input L:detected
8 OFT I Off-track signal input H:detected
9 BDO I Drop out signal input H:detected
10 LDON O Laser on signal output H:ON When command FO on,LDON is H
11 DSLB O DSL balance output
12 DVDD1 - Power supply for digital circuit
13 DVSS1 - Ground lines for digital circuit
14 AVSS2 - Ground lines for analog circuit For DSL,PLL and AD
15 DSLF I/O Loop filter terminal for DSL The bias of ARF output terminal in one
16 ARF I RF signal input
17 RFSW I When DSL circuit,constant switch terminal
18 PLLF I/O Loop filter terminal for PLL
19 PLLF2 I/O Loop filter characteristic switching terminal for PLL
20 IREF I Standard voltage input terminal
21 RFENV I RF envelope signal input Analog input
22 TRCRS I Track cross signal input Analog input
23 TE I Tracking error signal input Analog input
24 FE I Focusing error signal input Analog input
25 AVDD2 - Power supply for analog circuit For DSL,PLL and AD
26 AVSS1 - Ground lines for analog circuit For audio output (Lch and Rch in one)
27 OUTR O Rch audio output
28 AVDD1 - Power supply for analog circuit For audio output (Lch and Rch in one)
29 OUTL O Lch audio output
30 DVSS3 - Ground lines for digital circuit
31 CSEL I Oscillation frequency specification terminal H:33.8488MHz L:16.9344MHz
32 NC O Not used
33 ASEL I Audio output polarity switching terminal L:Reverse H:Non reverse
34 MSEL0 I Destination type selection port (set 2bit) Order "MSEL 0" and "MSEL 1" Set up
35 MSEL1 I Destination type selection port (set 2bit) Order "MSEL 0" and "MSEL 1" Set up
36 ICRST O Reset control terminal for external DAC
37 BCLK O Bit clock output for serial data
38 LRCK O L/R identification signal output
39 SRDATA O Sirial data output
40 VREFP I A/D converter standard power supply input
41 HOT I Temperature protection detection terminal (AD input) Over C5(h):on
42 8EJE_SW I 8cm disc eject stop detection terminal H:Stop
43 12EJE/SDET_SW I Judge the 8cm or 12cm disc 12cm disc stop detection terminal
44 LOE/LIM_SW I Pick-up inside detected Loading end detection terminal
45 PCK O PLL extracted clock output,etc
46 EFM O EFM signal output,etc
47 SENSE O Optics servo status signal output,etc
48 CLVS O Spindle servo phase synchronous signal output,etc L:Normal operation H:Luff servo
49 DEMPH O Dephase detection signal output,etc H:on
50 DVDD2 - Power supply for digital circuit
51 X1 I Main clock input terminal
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