Sony MEX-R5 Service Manual page 49

• IC Pin Function Descripition
SERVO BOARD IC1 CXD5002R (DVD ANALOG FRONT-END)
Pin No.
Pin Name
1, 2 RFIN, RFIP
3
SUMF
AGHPF1,
4, 5
AGHPF2
6
AGFR
7
VCC
8
IREFE
9
RF_GND
10
EQHPF
11
RFAC
12, 13
EQOP, EQON
14
TOPH
15
BOTH
16
BOTLPF
17
NC
18
GND
19, 20
NC
21 TST
22
VDD_IO
23
RFHLD
24
TZC
25 MIRR
26
DFT
27
IO_GND
28
XRST
29 SCLK
30
SDATA
31
SDEN
32
NC
33 TEIN
34
VDD_SRV
35
SIGM
36
TE
37 LE
38
PE
39
FE
40
PDCD
41 LDCD
42
SRV_GND
43
PDDVD
44
LDDVD
45 IREFT
46
VREF
47
VHALF
48
V33
49 VCC2
I/O
I Differential RF signal input terminal
- DC filter connection terminal for differential sum amplifier
- High-pass filter connection terminal for AGC input block
- Filter connection terminal for AGC filter
- Power supply terminal (+5V)
- Resistor connection terminal for cut-off frequency setting of RF equalizer
- Ground terminal
- High-pass filter connection terminal for AGC detection block
O Single RF signal output terminal
O Differential RF signal output terminal Not used
- Top hold terminal for envelope detection
- Bottom hold terminal for envelope detection
- Low-pass filter connection terminal for bottom envelope detection
- Not used
- Ground terminal
- Not used
O Output terminal for test
- Power supply terminal (+3.3V)
I Hold control signal input terminal Fixed at "L" in this set
O Tracking zero-cross output terminal Not used
O MIRROR detection signal output terminal
O DEFECT detection signal output terminal
- Ground terminal
I System reset signal input from the reset signal generator
I Serial data transfer clock signal input from the DVD processor
I/O Serial data input/output terminal with the DVD processor
I Serial data transfer enable signal input from the DVD processor
- Not used
I Detection signal input for tracking zero-cross
- Power supply terminal (+3.3V)
O Analog signal monitor output to the DVD processor
O Tracking error signal output terminal
O Lens position error signal output terminal
O Pull-in error signal output terminal
O Focus error signal output terminal
I Light amount monitor input from the laser diode (for CD)
O Laser diode on/off control signal output terminal (for CD)
- Ground terminal
I Light amount monitor input from the laser diode (for DVD)
O Laser diode on/off control signal output terminal (for DVD)
- Resistor connection terminal for reference current setting
O Reference voltage (+2.5V) output terminal
O Reference voltage (+1.65V) output
I Voltage (+3.3V) input terminal for VHALF (pin 47)
- Power supply terminal (+5V)
Description
MEX-R5
49