Sony FPF55C17196UA Service Manual page 8

1.3.3 I/O Interface Specification
(1) LVDS Signal Definition and Function
A video signal (display data signal and control signal) is converted from parallel data to serial
data with the LVDS transmitter and further converted into four sets of differential signals before
input to this product. These signals are transmitted seven times faster than dot clock signals.
The dot clock signal is converted into one set of differential signals by the transmitter before
input to this product. The LVDS signal definition and function are summarized below:
No. Item
1
Video Signal
Timing Signal
(ODD)
2
Video Signal
Timing Signal
(EVEN)
3
Clock (ODD)
4
Clock (EVEN)
Power down
5
Signal
6
Communication
7
8
9
Control
10
Signal Name
RA0-
RA0+
RA1-
RA1+
RA2-
RA2+
RA3-
RA3+
RA4-
RA4+
RB0-
RB0+
RB1-
RB1+
RB2-
RB2+
RB3-
RB3+
RB4-
RB4+
RACLKIN-
RACLKIN+
RACLKIN-
RACLKIN+
PDWN
SDA
SCL
CPUGO
PDPGO
IRQ
Number
of I/O Form
signals
1
1
1
1
LVDS
1
Input
Differential
1
1
1
1
1
1
1
1
1
LVDS
1
Input
Differential
1
1
1
1
1
1 LVDS
Input
1 Differential
1 LVDS
Input
1 Differential
1 Input LVTTL
1 I/O
LVTTL
(I
1 I/O
1 Input LVTTL
1 Input LVTTL
Outpu
1 LVTTL
t
-4-
Content of definition
Differential serial data signal.
Input video and timing signals after
differential serial conversion using a
dedicated transceiver.
The serial data signal is transmitted
seven times faster than the base
signal．
Differential serial data signal.
Input video and timing signals after
differential serial conversion using a
dedicated transceiver.
The serial data signal is transmitted
seven times faster than the base
signal．
Input the clock signal after
differential conversion using a
dedicated transceiver.
The clock signal is transmitted at
the same speed as the base signal.
Low :LVDS receiver outputs are all
"L".
High: Output signals are active.
2
I C bus serial data communication
signal.
2
C)
Communication with the control
MPU of this product is enabled.
"High": Low power consumption
mode of the control MPU of this
product is released.
"High": This product is started.
(CPUGO="High" Effective)
It changes into "Low" → "High"
when this product enters the
undermentioned state.
1. Vcc/Va/Vs output decrease
2. Circuit abnormality detection