General Description
The DS90C383 transmitter converts 28 bits of LVCMOS/
LVTTL data into four LVDS (Low Voltage Differential Signaling)
data streams. A phase-locked transmit clock is transmitted
in parallel with the data streams over a fifth LVDS link.
Every cycle of the transmit clock 28 bits of input data are
sampled and transmitted. The DS90CF384 receiver converts
the LVDS data streams back into 28 bits of LVCMOS/
LVTTL data. At a transmit clock frequency of 65 MHz, 24 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 throughputs is 227 Mbytes/sec. The transmitter is offered
with programmable edge data strobes for convenient
interface with a variety of graphics controllers. The transmitter
can be programmed for Rising edge strobe or Falling
edge strobe through a dedicated pin. A Rising edge transmitter
will inter-operate with a Falling edge receiver
(DS90CF384) without any translation logic. Both devices are
also offered in a 64 ball, 0.8mm fine pitch ball grid array
(FBGA) package which provides a 44 % reduction in PCB
footprint compared to the TSSOP package.
This chipset is an ideal means to solve EMI and cable size
problems associated with wide, high speed TTL interfaces.

Features
20 to 65 MHz shift clock support
Programmable transmitter (DS90C383) strobe select
Rising or Falling edge strobe)
Single 3.3V supply
Chipset (Tx + Rx) power consumption < 250 mW (typ)
Power-down mode (< 0.5 mW total)
Single pixel per clock XGA (1024x768) ready
Supports VGA, SVGA, XGA and higher addressability.
Up to 227 Megabytes/sec bandwidth
Up to 1.8 Gbps throughput
Narrow bus reduces cable size and cost
290 mV swing LVDS devices for low EMI
PLL requires no external components
Low profile 56-lead TSSOP package.
Also available in a 64 ball, 0.8mm fine pitch ball grid
array (FBGA) package
Falling edge data strobe Receiver
Compatible with TIA/EIA-644 LVDS standard
ESD rating >7 kV
Operating Temperature: −40°C to +85°C