The DS90C385 transmitter converts 28 bits of LVCMOS/LVTTL data into four LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmit ted 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. At a transmit clock frequency of 85 MHz, 24 bits of RGB data and 3 bits of LCD timing and control data (FPLINE, FPFRAME, DRDY) are transmitted at a rate of 595 Mbps per LVDS data channel. Using a 85 MHz clock, the data throughput is 297.5 Mbytes/sec.
Features
■ 20 to 85 MHz shift clock support
■ Best–in–Class Set & Hold Times on TxINPUTs
■ Tx power consumption <130 mW (typ) @85MHz Grayscale
■ Tx Power-down mode <200µW (max)
■ Supports VGA, SVGA, XGA and Dual Pixel SXGA.
■ Narrow bus reduces cable size and cost
■ Up to 2.38 Gbps throughput
■ Up to 297.5 Megabytes/sec bandwidth
■ 345 mV (typ) swing LVDS devices for low EMI
■ PLL requires no external components
■ Compatible with TIA/EIA-644 LVDS standard
■ Low profile 56-lead or 48-lead TSSOP package
■ DS90C385 also available in a 64 ball, 0.8mm fine pitch ball grid array (FBGA) package
