V385
8-BIT LVDS TRANSMITTER FOR VIDEO
General Description
Features
The V385 transmitter converts 28 bits of 3.3 V
CMOS/TTL into 4 Low Voltage Differential Signaling
(LVDS) data streams while the transmit clock input is
transmitted in parallel with the data streams over a fifth
LVDS link. The V385 can be programmed for rising
edge or falling edge clocks through pin R_FB.
• Pin and function compatible with the National
ICS manufactures a large variety of video application
devices. Consult ICS for all of your video application
requirements.
Please refer to the V385A for new designs.
Pin Assignment
VCC
TxIN5
TxIN6
TxIN7
GND
TxIN8
TxIN9
TxIN10
VCC
TxIN11
TxIN12
TxIN13
GND
TxIN14
TxIN15
TxIN16
R_FB
TxIN17
TxIN18
TxIN19
GND
TxIN20
TxIN21
TxIN22
TxIN23
VCC
TxIN24
TxIN25
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
TxIN4
TxIN3
TxIN2
GND
TxIN1
TxIN0
TxIN27
LVDS_GND
TxOUT0TxOUT0+
TxOUT1TxOUT1+
LVDS_VCC
LVDS_GND
TxOUT2TxOUT2+
TxCLKOUTTxCLKOUT+
TxOUT3TxOUT3+
LVDS_GND
PLL_GND
PLL_VCC
PLL_GND
PWRDWN
TxCLKIN
TxIN26
GND
DS90C385, TI SN65LVDS93 and THine
THC63LVDM83
• Convert 28 bits of 3.3 V CMOS/TTL into 4 LVDS
streams
• Up to 2.38 Gbps throughput or 297.5 Megabytes/sec
bandwidth
•
•
•
•
•
•
•
•
•
•
Wide clock frequency range from 20 MHz to 85 MHz
Spread spectrum compatible
Supports VGA, SVGA, XGA, and SXGA
LVDS voltage swing of 350 mV for low EMI
On-chip PLL requires no external components
Single 3.3 V low-power CMOS design
Programmable rising or falling edge strobe
Power-down control function
Compatible with TIA/EIA-644 LVDS standards
Packaged in a 56-pin TSSOP (Pb free available)
Block Diagram
Red, Green, Blue
TxOUT0+
24
TxOUT0-
HSYNC
TxOUT1+
VSYNC
DATA ENABLE
TxOUT1-
TTL to
LVDS
TxOUT2+
CONTROL
TxOUT2R_FB
TxOUT3+
PWRDWN
TxOUT3TxCLKOUT+
CLOCK
PLL
TxCLKOUT-
56-pin TSSOP
V385 Datasheet
1
12/7/05
Revision 1.7
I n t e g r a t e d C i r c u i t S y s t e m s • 5 2 5 R a c e St r e e t , S a n J o s e , C A 9 5 1 2 6 • t e l ( 4 0 8) 2 97 - 1 2 0 1 • w ww. i c s t . co m
V385
8-BIT LVDS TRANSMITTER FOR VIDEO
Pin Descriptions
Pin
Pin Type
Pin Name
Pin Description/Name
1
Power
VCC
3.3V Power
2
CMOS/TTL
TxIN5
Parallel digital video input pins (TxIN0..27).
3
CMOS/TTL
TxIn6
Parallel digital video input pins (TxIN0..27).
4
CMOS/TTL
TxIn7
Parallel digital video input pins (TxIN0..27).
5
Ground
GND
Ground
6
CMOS/TTL
TxIN8
Parallel digital video input pins (TxIN0..27).
7
CMOS/TTL
TxIN9
Parallel digital video input pins (TxIN0..27).
8
CMOS/TTL
TxIN10
Parallel digital video input pins (TxIN0..27).
9
Power
VCC
3.3V Power
10
CMOS/TTL
TxIN11
Parallel digital video input pins (TxIN0..27).
11
CMOS/TTL
TxIN12
Parallel digital video input pins (TxIN0..27).
12
CMOS/TTL
TxIN13
Parallel digital video input pins (TxIN0..27).
13
Ground
GND
Ground
14
CMOS/TTL
TxIN14
Parallel digital video input pins (TxIN0..27).
15
CMOS/TTL
TxIN15
Parallel digital video input pins (TxIN0..27).
16
CMOS/TTL
TxIN16
Parallel digital video input pins (TxIN0..27).
17
CMOS/TTL
R_FB
Programmable strobe select input pin (R_FB). High = rising edge; Low =
falling edge.
18
CMOS/TTL
TxIN17
Parallel digital video input pins (TxIN0..27).
19
CMOS/TTL
TxIN18
Parallel digital video input pins (TxIN0..27).
20
CMOS/TTL
TxIN19
Parallel digital video input pins (TxIN0..27).
21
Ground
GND
Ground
22
CMOS/TTL
TxIN20
Parallel digital video input pins (TxIN0..27).
23
CMOS/TTL
TxIN21
Parallel digital video input pins (TxIN0..27).
24
CMOS/TTL
TxIN22
Parallel digital video input pins (TxIN0..27).
25
CMOS/TTL
TxIN23
Parallel digital video input pins (TxIN0..27).
26
Power
VCC
3.3V Power
27
CMOS/TTL
TxIN24
Parallel digital video input pins (TxIN0..27).
28
CMOS/TTL
TxIN25
Parallel digital video input pins (TxIN0..27).
29
Ground
GND
Ground
30
CMOS/TTL
TxIN26
Parallel digital video input pins (TxIN0..27).
31
CMOS/TTL
TxCLKIN
Clock input (TxCLKIN)
32
CMOS/TTL
PWRDWN
Active low. Powerdown tri-states outputs.
33
Ground
PLL_GND
Ground
34
Power
PLL_VCC
3.3V Power
35
Ground
PLL_GND
Ground
36
Ground
LVDS_GND
Ground
V385 Datasheet
2
12/7/05
Revision 1.7
I n t e g r a t e d C i r c u i t S y s t e m s • 5 2 5 R a c e St r e e t , S a n J o s e , C A 9 5 1 2 6 • t e l ( 4 0 8) 2 97 - 1 2 0 1 • w ww. i c s t . co m
V385
8-BIT LVDS TRANSMITTER FOR VIDEO
Pin
Pin Type
Pin Name
Pin Description/Name
37
LVDS
TxOUT3+
LVDS output (+)
38
LVDS
TxOUT3-
LVDS output (-)
39
LVDS
TxCLKOUT+
LVDS output (+)
40
LVDS
TxCLKOUT-
LVDS output (-)
41
LVDS
TxOUT2+
LVDS output (+)
42
LVDS
TxOUT2-
LVDS output (-)
43
Ground
LVDS_GND
Ground
44
Power
LVDS_VCC
3.3V Power
45
LVDS
TxOUT1+
LVDS output (+)
46
LVDS
TxOUT1-
LVDS output (-)
47
LVDS
TxOUT0+
LVDS output (+)
48
LVDS
TxOUT0-
LVDS output (-)
49
Ground
LVDS_GND
Ground
50
CMOS/TTL
TxIN27
Parallel digital video input pins (TxIN0..27).
51
CMOS/TTL
TxIn0
Parallel digital video input pins (TxIN0..27).
52
CMOS/TTL
TxIn1
Parallel digital video input pins (TxIN0..27).
53
Ground
GND
Ground
54
CMOS/TTL
TxIn2
Parallel digital video input pins (TxIN0..27).
55
CMOS/TTL
TxIn3
Parallel digital video input pins (TxIN0..27).
56
CMOS/TTL
TxIn4
Parallel digital video input pins (TxIN0..27).
External Components
The V385 requires no external components.
V385 Datasheet
3
12/7/05
Revision 1.7
I n t e g r a t e d C i r c u i t S y s t e m s • 5 2 5 R a c e St r e e t , S a n J o s e , C A 9 5 1 2 6 • t e l ( 4 0 8) 2 97 - 1 2 0 1 • w ww. i c s t . co m
V385
8-BIT LVDS TRANSMITTER FOR VIDEO
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the V385. These ratings, which are
standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at
these or any other conditions above those indicated in the operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical
parameters are guaranteed only over the recommended operating temperature range.
Item
Rating
Supply Voltage, VDD
-0.3 V to +4 V
All Inputs and Outputs
-0.3 V to VCC+0.3 V
Electrostatic Discharge (EIAJ, 0Ω, 200 pF)
> 500 V
Ambient Operating Temperature
0 to +70°C
Storage Temperature
-65 to +150°C
Junction Temperature
150°C
Maximum Soldering Temperature
260°C
Recommended Operation Conditions
Min.
Parameter
Ambient Operating Temperature
Typ.
Max.
Units
+70
°C
3.6
V
0
Power Supply Voltage (measured in respect to GND)
3.0
3.3
Electrical Characteristics
VDD=3.3 V ±10%, Ambient temperature 0 to +70°C
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
2.00
VCC
V
GND
Freq.
CMOS/TTL DC Specifications
Input High Voltage
VIH
Input Low Voltage
VIL
0.80
V
Input Current
IIN
GND
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