DS90C383BMT/NOPB

The DS90C383B transmitter converts 28 bits of CMOS/TTL 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. 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 throughput is 227 Mbytes/sec. The DS90C383B transmitter can be programmed for Rising edge strobe or Falling edge strobe through a dedicated pin. A Rising edge or Falling edge strobe transmitter will interoperate with a Falling edge strobe Receiver (DS90CF386) without any translation logic. This chipset is an ideal means to solve EMI and cable size problems associated with wide, high speed TTL interfaces.

Applications

• The DS90C383B are backward compatible with the DS90C383/DS90CF383, DS90C383A/DS90CF383A and are a pin-for-pin replacement.
• This device may also be used as a replacement for the DS90CF583 (5V, 65MHz) and DS90CF581 (5V, 40MHz) FPD-Link Transmitters with certain considerations/modifications

Key features

• No special start-up sequence required between clock/data and /PD pins. Input signal (clock and data) can be applied either before or after the device is powered
• Support Spread Spectrum Clocking up to 100kHz frequency modulation and deviations of ±2.5% center spread or -5% down spread
• "Input Clock Detection" feature will pull all LVDS pairs to logic low when input clock is missing and when /PD pin is logic high
• 18 to 68 MHz shift clock support
• Best-in-Class Setup and Hold Times on TxINPUTs
• Tx power consumption <130 mW (typ) at 65MHz Grayscale
• 40% Less Power Dissipation than BiCMOS Alternatives
• Tx Power-down mode <60μV (typ)
• Supports VGA, SVGA, XGA and Dual Pixel SXGA.
• Narrow bus reduces cable size and cost
• Up to 1.8 Gbps throughput
• Up to 227 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 TSSOP package
• Improved replacement for: SN75LVDS83, DS90C383A