JVC KD-S741R, Service Manual

Page: 37 / 67

KD-S743R/KD-S741R
(No.49810)1-37
17 TMAX O TMAX detection result output pin.
18 LPFN I Inverted input pin for PLL LPF amp.
19 LPFO O Output pin for PLL LPF amp.
20 PVREF - PLL-only VREF pin.
21 VCOF O VCO filter pin.
22 AV
SS3
- Analog GND pin.
23 SLCO O DAC output pin for data slice level generation.
24 RFI I RF signal input pin. Zin selectable by command.
25 AV
DD3
- Analog 3.3V power supply voltage pin.
26 RFCT I RFRP signal center level input pin.
27 RFZI I RFRP signal zero-cross input pin.
28 RFRP I RF ripple signal input pin.
29 FEI I Focus error signal input pin.
30 SBAD I Sub-beam adder signal input pin.
31 TEI I Tracking error input pin. Inputs when tracking servo is on.
32 TEZI I Tracking error signal zero-cross input pin.
33 FOO O Focus equalizer output pin.
34 TRO O Tracking equalizer output pin.
35 VREF - Analog reference power supply voltage pin.
36 RFGC O RF amplitude adjustment control signal output pin.
37 TEBC O Tracking balance control signal output pin.
38 SEL O APC circuit ON/OFF signal output pin. At laser on, high impedance with UHS="L",
H output with UHS="H".
39 AV
DD3
- Analog 3.3V power supply voltage pin.
40 FMO O Feed equalizer output pin.
41 DMO O Disc equalizer output pin.
42 V
SS3
- Digital GND pin.
43 V
DD3
- Digital 3.3V power supply voltage pin.
44 TESIN I Test input pin. Normally, fixed to "L".
45 XV
SS3
- System clock oscillator GND pin.
46 XI I System clock oscillator input pin.
47 XO O System clock oscillator output pin.
48 XV
DD3
- System clock oscillator 3.3V power supply voltage pin.
49 DV
SS3
R - DA converter GND pin.
50 RO O R-channel data forward output pin.
51 DV
DD3
- DA converter 3.3V power supply pin.
52 DVR - Reference voltage pin.
53 LO O L-channel data forward output pin.
54 DV
SS3
L - DA converter GND pin.
55 ZDET O 1 bit DA converter zero detection flag output pin.
56 V
SS5
- Microcontroller interface GND pin.
57 BUS0
58 BUS1
I/O Microcontroller interface data I/O pins. 59 BUS2
60 BUS3
61 BUCK I Microcontroller interface clock input pin.
62 /CCE I Microcontroller interface chip enable signal input pin.At "L", BUS0 to BUS3 are active.
63 /RST I Reset signal input pin. At reset, "L".
64 V
DD5
- Microcontroller interface 5V power supply pin.
Pin
No Symbol I/O
Descroption
TMAX Detection Result
Longer than fixed period
Within fixed period
Shorter than fixed period
"PV
DD3
"
"HiZ"
"AV
SS3
"
TMAX Output
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