Kenwood KVT-910DVD Service Manual page 19

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin Name I/O
81 PLLCAP
82 PLLVss
83 NC
84 PWRON_RST
85 L64021_DMAC
86 FE_REQ
87 L64021_PCM
88 BUS_EN
89 IC_RESET
90 Vss
91 ROM_WR
92 IF_SEL
93 NC
94 DEEMPH
95 DVD_TYPE
96 TEST_MODE
97 AVss
98 AMUTE_IN
99 SYS_REQ
100 AVcc
101 Vss
102 NC
103 Vcc
104 LOCK
105 NC
106 A_MUTE
107 BE_REQ
108 ADAC_RESET
109 Vss
110 DVD_REQ
111 NC
112 NC
Function
- Capacity for PLL
- GND for PLL
I Not used
I Power On Reset Input
I L64021 DMA Request detection
I F/E mechanism local I/F Front/End Data Request
I L64021 AudioPCM detection
O ATAPI/AV I/F selection output
O MPEG-DEC./V-ENC reset output
- GND
I Flash-ROM Write mode
I ATAPI/AV BUS-SW Switching input
I Not used
I CD-DA de-emphasis signal input
I DVD destination input
I Test mode identification input for design evaluation
- analog GND
I Ext. Audio Mute input (Effective only for CD-DA)
I Sync initialization request (From TV/DVD syscon)
- Analog power source
- GND
I Not used
- Power source
I Lock detection signal
I Not used
O Audiomute output
O F/E mechanism local I/F B/E Data Request
O A-DAC Reset output
- GND
O Communication control response (To TV/DVD syscon)
I Not used
I Not used
KVT-910DVD/920DVD/930DVD/
940DVD/960DVD
Description of Processing
H : ATAPI I/F / L : AV I/F
H : Normal / L : Reset
H : Write mode / L : Normal
H : AV I/F fixed input
H : de-emphasis ON /
L : Normal (de-emphasis OFF)
L : TV/DVD fixed input
H : Normal operation /
L : Test mode
H : Mute /
L : Normal operation (Mute OFF)
"H" fixed input
H : Normal (Mute OFF) /
L : Mute
H : Normal /
L : Reset
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