DS90C387A Datasheet | National Semiconductor

Description The DS90C387A/DS90CF388A transmitter/receiver pair is designed to support dual pixel data transmission between Host and Flat Panel Display up to QXGA resolutions. The transmitter converts 48 bits (Dual Pixel 24-bit color) of CMOS/TTL data and 3 control bits into 8 LVDS (Low Voltage Differential Signalling) data streams. At a maximum dual pixel rate of 112MHz, LVDS data line speed is 784Mbps, providing a total throughput of 5.7Gbps (714 Megabytes per second). The LDI chipset is improved over prior generations of FPDLink devices and offers higher bandwidth support and longer cable drive. To increase bandwidth, the maximum pixel clock rate is increased to 112 MHz and 8 serialized LVDS outputs are provided. Cable drive is enhanced with a user selectable pre-emphasis feature that provides additional output current during transitions to counteract cable loading effects. The DS90C387A transmitter provides a second LVDS output clock. Both LVDS clocks are identical. This feature supports backward patibility with the previous generation of FPDLink Receivers - the second clock allows the transmitter to interface to panels using a ’dual pixel’ configuration of two 24-bit or 18-bit FPD-Link receivers. This chipset is an ideal means to solve EMI and cable size problems for high-resolution flat panel applications. It pro- vides a reliable interface based on LVDS technology that delivers the bandwidth needed for high-resolution panels while maximizing bit times, and keeping clock rates low to reduce EMI and shielding requirements. For more details, please refer to the “Applications Information” section of this datasheet. Features n Supports SVGA through QXGA panel resolutions n 32.5 to 112/170MHz clock support n Drives long, low cost cables n Up to 5.7 Gbps bandwidth n Pre-emphasis reduces cable loading effects n Dual pixel architecture supports interface to GUI and timing controller; optional single pixel transmitter inputs support single pixel GUI interface n...