Read Sony SLV-F900 / SLV-F990 Service Manual online
4-4.
T
ag IC Block Diagram
EEPROM
Carrier
Antenna
CLAMP CIRCUIT
LMT
CP
CM
VSS
ird
owd
ock
crst
cft
↓
VDD
[Drain side]
POWER SUPPLY
GENERATOR REG.
REFERENCE VOLTAGE
GENERATOR CIRCUIT
BQ
CLOCK EXTRACTING
CIRCUIT
carrier
ANTENNA DRIVER
CIRCUIT
Detector
BLD DETECTION
FLAG
Digital data
LOGIC
Fig. 4-3
rt
Digital Circuit
5. HARDWARE BLOCK SPECIFICATIONS
AT-24 Board
Antenna 1
AT-23 Board
Antenna 2
Reception
Circuit
Circuit
IC900 (UPC393G2-E2)
Comparator
Comparator
ML-15 Board
MA PCB
ML PCB
TUNER
ROM
Data
IIC
Video
Transmission
Circuit
Circuit
data
data
data
carrier
carrier
Reception
Circuit
Circuit
IC902 (CXP84632)
IC950 (SDA5250M)
Teletext
Decode
Teletext
Decode
IC951
MX23C4000
PC-12
IC901 (CXD8753Q)
Digital ASIC
Digital ASIC
IC180 (S579C15PJ)
12V
5V
GND
Fig. 5-1
CLK, S IN,
S OUT, CS,
RESET
S OUT, CS,
RESET
Transmission
Circuit
Circuit
SW
CONT
Q910/Q912
CLK,
S IN,
S OUT,
REQUEST,
RESET
S IN,
S OUT,
REQUEST,
RESET
HITT
u-CON
u-CON
4-1. Tag Structure
4. ABOUT TAG
IC
Fig. 4-1
4-2. Power Supply for IC
The tag does not receive any external power supplies. The inductive voltage is rectified and is used as the power supply.
4-3. Transmission and Reception Methods
They are performed by the electromagnetic induction.
R/W
MODULATOR/
DEMODULATOR
MODULATOR/
DEMODULATOR
IC
Tag
(tape side)
(tape side)
Magnetic flux
Antenna
(Video cassette
recorder side)
(Video cassette
recorder side)
Fig. 4-2
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