Sony CXB1455R Datasheet
VGA/SVGA/XGA 24-bit Transmitter
Description
The CXB1455R is the IC which transmits the 24-bit
VGA/SVGA/XGA definition moving picture based on
the GVIF (Gigabit Video Interface) technology.
Features
• 1 chip transmitter for serial transmission of 24-bit
color VGA/SVGA/XGA picture
• On-chip PLL synthesizer
• On-chip differential cable driver
• TTL/CMOS compatible interface
• Supports 1 pixel/shift clock mode with 1 chip and
2 pixel/shift clock mode with 2 chips
• Single 3.3V power supply
• Low power consumption
• 48-pin plastic QFP package (7mm × 7mm)
Application
Gigabit video interface
Block Diagram and Pin Configuration
Structure
Bi-CMOS IC
Absolute Maximum Ratings
• Power supply VCC 4.2 V
• Operating temperature Topr 0 to +85 °C
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD 333 mW
Recommended Operating Condition
Supply voltage 3.3 ± 0.3 V
– 1 –
E98Y03B03
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
CXB1455R
48 pin LQFP (Plastic)
37
38
39
40
41
42
43
44
45
46
47
48
1
2
3
4 5 6 7 8 9 10 11 12
13
14
15
16
17
18
19
20
21
22
23
24
252627282930313233343536
GND
CE
LPFA
LPFB
CKPOL
SDATAP
SDATAN
GNDT
REXT
V
CCA
GNDA
V
DD
VDD
G2
G3
G4
G5
G6
G7
B0
B1
B2
B3
GND
VDD
R0
R1
R2
R3
R4
R5
R6
R7
G0
G1
GND
GND
REFREQ
CNTL
DE
SFTCLK
HSYNC
VSYNC
B7
B6
B5
B4
V
DD
P/S
Converter
Cable
Driver
PLL
Encoder
Fig. 1. Block Diagram and Pin Configuration
– 2 –
CXB1455R
Pin Description
Power Supply/Ground
Symbol
VDD
GND
VCCA
GNDA
GNDT
12, 24, 36, 48
1, 13, 25, 37
34
35
32
Logic power supply; connected to 3.3V ± 0.3V
Logic ground; connected to 0V
Analog power supply; connected to 3.3V ± 0.3V
Analog ground; connected to 0V
Transmission ground; connected to 0V
Pin No. Description
Digital Signal
Symbol
SFTCLK
RED (7 to 0)
GRN (7 to 0)
BLU (7 to 0)
HSYNC
VSYNC
CNTL
DE
CE
CKPOL
41
16, 17, 18, 19,
20, 21, 22, 23
6, 7, 8, 9, 10,
11, 14, 15
44, 45, 46, 47,
2, 3, 4, 5
42
43
39
40
26
29
TTL in 1
TTL in 1
TTL in 1
TTL in 1
TTL in 1
TTL in 1
TTL in 2
TTL in 2
Shift clock, for the data
fetch at rising or falling
edge
Pixel data. 1 pixel/shift
clock input.
Hsync data
Vsync data
Panel control data
Data enable
Chip enable
SFTCLK polarity
Pin No.
Type
Equivalent Circuit
Description
VDD
TTL-IN
GND
SDATAP/N
30, 31
Tx
Serial output and Refclk
request input
VCCA
SDATAP
GNDT
VDD
GND
SDATAN
GNDA
VDD
TTL-IN
GND
– 3 –
CXB1455R
Special
REFREQ
38
TTL out
Refclk request
detection flag
VDD
TTL-OUT
GND
Symbol
Pin No.
Equivalent Circuit
Description
Type
Symbol
REXT
33
SDATAP/N
output current
trimming.
Connect to the
external resistor.
Pin No.
Equivalent Circuit
Description
VCCA
GNDA
GND
REXT
VDD
LPFA/B
27, 28
External loop filter
VCCA
LPFA
GNDA
GND
VDD
LPFB
– 4 –
CXB1455R
Electrical Characteristics
Table 1. Absolute Maximum Ratings
Item
Supply voltage
TTL DC input voltage
TTL H level output current
TTL L level output current
Serial output pin voltage
Ambient temperature
Storage temperature
VCC
VI_T
IOH_T
IOL_T
Vsdout
Ta
Tstg
–0.3
–0.5
–20
0
VCC–1.2
–55
–65
4.2
6.5
0
20
VCC + 0.5
120
150
V
V
mA
'
mA
V
°C°CUnder bias
Symbol Min. Typ. Max. Unit Remarks
Table 2. Recommended Operating Conditions
Item
Supply voltage (Includes VDD and VccA)
Ambient temperature
VCC
Ta
3.0
0
3.3 3.6
85
V
°C
Symbol Min. Typ. Max. Unit Conditions
Table 3. DC Characteristics (Under the recommended operating conditions. See Table 2.)
Item
TTL High level input voltage
TTL Low level input voltage
TTL High level input current
TTL Low level input current
CE, CKPOL High level input voltage
CE, CKPOL Low level input voltage
CE, CKPOL High level input current
CE, CKPOL Low level input current
TTL High level output voltage
TTL Low level output voltage
SDATA High level output current
SDATA Low level output current
SDATA High level output voltage
SDATA Low level output voltage
Supply current
VIH_T
VIL_T
IIH_T
IIL_T
VIH_C
VIL_C
IIH_C
IIL_C
VOH_T
VOL_T
IOH_SD
IOL_SD
VIH_SD
VIL_SD
ICC
2
0
–1.0
VCC – 0.5
0
–1.0
2.4
–0.1
14.5
VCC – 0.55
44.0
50.0
0
15.7
61.0
71.0
5.5
0.8
1.0
5.5
0.5
1.0
0.4
+0.5
17
VCC – 0.76
77.0
92.0
V
V
µA
µA
V
V
µA
µA
V
V
mA
mA
V
V
mA
mA
VIN = VCC
VIN = 0
VIN = VCC
VIN = 0
IOH = –8mA
IOL = 8mA
REXT = 4.7kΩ
Common mode
voltage
@65MHz
Symbol
Min.
Typ.
Max.
Unit
Conditions
GRAYSCALE
WORSTCASE
See Fig. 8
See Fig. 7
– 5 –
CXB1455R
Table 4. AC Characteristics (Under the recommended operating conditions. See Table 2.)
Item
TTL input rise time
TTL input fall time
Minimum SFTCLK frequency
Maximum SFTCLK frequency
SFTCLK duty factor
Pixel/Sync/Cntl setup time to
SFTCLK
Pixel/Sync/Cntl hold time to
SFTCLK
SDATA rise time
SDATA fall time
Clock mode assert time
Clock mode deassert time
Idle mode assert time
Idle mode deassert time
PLL lock-in time
Tir
Tif
Fsftclk
Dsftclk
Tsetup
Thold
Tor
Tof
TAclk
TDclk
TAidle
TDidle
Tlockin
0.7
0.7
65.0
40
2.5
2.5
200
200
50
10
150
100
0.1
5.0
5.0
25.0
60
ns
ns
MHz
MHz
%
ns
ns
ps
ps
ns
ns
ns
ns
ms
0.8 to 2.0V
2.0 to 0.8V
Vth = 1.4V
20 to 80%, CL = 2pF See Fig. 2.
Symbol
Min.
Typ. Max. Unit Conditions
CXB1455R
RGB, CE
VS, HS, DE, CNTL, CKPOL
FET probe
Sampling
oscilloscope
V
CC
51
100
VCC/A
TTL clock
GND/A/T
51
41
30
31
Fig. 2. SDATA waveform measurement
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