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DS90C363/DS90CF364
+3.3V Programmable LVDS Transmitter 18-Bit Flat Panel
Display (FPD) Link—65 MHz, +3.3V LVDS Receiver
18-Bit Flat Panel Display (FPD) Link—65 MHz
General Description
The DS90C363 transmitter converts 21 bits of CMOS/TTL
data into three LVDS (Low Voltage Differential Signaling)
data streams.Aphase-locked transmit clock is transmitted in
parallel with the data streams over a fourth LVDS link. Every
cycle of the transmit clock 21 bits of input data are sampled
and transmitted. The DS90CF364 receiver converts the
LVDS data streams back into 21 bits of CMOS/TTL data. At
a transmit clock frequency of 65 MHz, 18 bits of RGB data
and 3 bits of LCD timing and control data (FPLINE,
FPFRAME, DRDY) are transmitted at a rate of 455 Mbps per
LVDS data channel. Using a 65 MHz clock, the data through-
puts is 170 Mbytes/sec. The Transmitter is offered with pro-
grammable edge data strobes for convenient interface with a
variety of graphics controllers. The Transmitter can be pro-
grammed for Rising edge strobe or Falling edge strobe
through a dedicated pin.A Rising edge Transmitter will inter-
operate with a Falling edge Receiver (DS90CF364) without
any translation logic.
This chipset is an ideal means to solve EMI and cable size
problems associated with wide, high speed TTL interfaces.
Features
n 20 to 65 MHz shift clock support
n Programmable Transmitter (DS90C363) strobe select
(Rising or Falling edge strobe)
n Single 3.3V supply
n Chipset (Tx + Rx) power consumption
<
250 mW (typ)
n Power-down mode (
<
0.5 mW total)
n Single pixel per clock XGA (1024x768) ready
n Supports VGA, SVGA, XGA and higher addressability.
n Up to 170 Megabyte/sec bandwidth
n Up to 1.3 Gbps throughput
n Narrow bus reduces cable size and cost
n 290 mV swing LVDS devices for low EMI
n PLL requires no external components
n Low profile 48-lead TSSOP package
n Falling edge data strobe Receiver
n Compatible with TIA/EIA-644 LVDS standard
n ESD rating
>
7kV
n Operating Temperature: −40˚C to +85˚C
Block Diagrams
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
Application
DS012886-14
September 1999
DS90C363/DS90CF364 +3.3V Programmable LVDS 18-Bit-Color Flat Panel Display (FPD)
Link— 65 MHz
© 1999 National Semiconductor Corporation DS012886 www.national.com
