Kenwood DVR-8100, Service Manual

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DVR-8100
6
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
Logic
H L
1,2 NC NC Unused.
3 VDD I Power supply (+5.0V)
4 POWER DOWN I Detection pin for the power failure.
5 RDS-CLK I RDS clock input.
6 H/P CHK I Detection pin for the headphones. H/P IN
7 RDS OPTION I Setting pin for RDS. RDS NO RDS
8 REMOCON I Remote controller signal input.
9 RDS-DATA I RDS data input.
10 NC NC Unused.
11 EEPROM CLK O Clock output to EEPROM.
12,13 ENCODE (1,2) I Volume encoder input.
14 AMP PROTECT I Detection pin for the protection.
PROTECTI
ON ON
Pin No. Pin Name I/O Pin Description
182,183 CPU ADR(20,21) - Unused.
PIOs and communication
186 PIO0(0) T STROBE I/O UART0 data
187 PIO0(1) MOD SW I/O ATAPI RD
188 PIO0(2) O Unused.
189 PIO0(3) O Unused.
190 PIO0(4) O Unused.
191 PIO0(5) I Unused.
PIO0(6) SLIDER SENSOR
192 OPEN/CLOSE I/O Detection port of slider sensor for DVD mechanism.
(DRAWER POSITION)
193
PIO0(7) SLIDER IN
I/O Control port of slider (IN) for DVD mechanism.
(DRAWER CCW/CTRL)
194 PIO1(0) SDA I/O SSC0 data (MTSR out / MRST in)
195 PIO1(1) SCL I/O SSC0 clock
196
PIO1(2) SLIDER OUT
I/O Control port of slider (OUT) for DVD mechanism.
(DRAWER CW CTRL)
197 PIO1(3) TXD(JIG) I/O UART2 TXD
200 PIO1(4) RXD(JIG) I/O UART2 RXD
201 PIO1(5) FRONT TXDI I/O UART1 TXD
202 TRIGGER IN I/O Trigger input from JIG.
203 TRIGGER OUT I/O Trigger output from JIG.
204 PIO2(0) H/P - Unused.
205 PIO2(1) FRONT RXD I/O UART1 RXD
206 PIO2(2) I Unused.
207 PIO2(3) - Unused.
208 PIO2(4) AUDIO MUTE O Audio mute control.
Power supply
4,47,81,107
VDD3-3 - 3.3V Power supply.
136,159,184
14,37,64,94
119,149,171 VDD2-5 - 2.5V Power supply.
198
5,15,38,50,65
83,96,108,121
VSS - GND
137,150,160
172,185,199
2. Pin Description of Main Microcomputer : CXP82860 (X09, IC22)
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QQ 376315150
9 9
2
8 9
4 2
9 8
TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299