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DS90CR483A - 产品图解:
DS90CR483A-48 位 LVDS 频道链接串行/DES - 33 - 112 MHz
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TI产品 - DS90CR483A介绍
DS90CR483A - 48 位 LVDS 频道链接串行/DES - 33 - 112 MHz

DS90CR483A是TI公司的一款通道链接I产品,DS90CR483A是48 位 LVDS 频道链接串行/DES - 33 - 112 MHz,本页介绍了DS90CR483A的产品说明、应用、特性等,并给出了与DS90CR483A相关的TI元器件型号供参考。

DS90CR483A - 48 位 LVDS 频道链接串行/DES - 33 - 112 MHz - 通道链接I - 串行器、解串器 - TI公司(Texas Instruments,德州仪器)

产品描述

The DS90CR483A transmitter converts 48 bits of CMOS/TTL data into eight LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmitted in parallel with the data streams over a ninth LVDS link. Every cycle of the transmit clock 48 bits of input data are sampled and transmitted. The DS90CR484A receiver converts the LVDS data streams back into 48 bits of CMOS/TTL data. At a transmit clock frequency of 112MHz, 48 bits of TTL data are transmitted at a rate of 672Mbps per LVDS data channel. Using a 112MHz clock, the data throughput is 5.38Gbit/s (672Mbytes/s).

The multiplexing of data lines provides a substantial cable reduction. Long distance parallel single-ended buses typically require a ground wire per active signal (and have very limited noise rejection capability). Thus, for a 48-bit wide data and one clock, up to 98 conductors are required. With this Channel Link chipset as few as 19 conductors (8 data pairs, 1 clock pair and a minimum of one ground) are needed. This provides an 80% reduction in cable width, which provides a system cost savings, reduces connector physical size and cost, and reduces shielding requirements due to the cables' smaller form factor.

The 48 CMOS/TTL inputs can support a variety of signal combinations. For example, 6 8-bit words or 5 9-bit (byte + parity) and 3 controls.

The DS90CR483A/DS90CR484A chipset is improved over prior generations of Channel Link devices and offers higher bandwidth support and longer cable drive with three areas of enhancement. To increase bandwidth, the maximum 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. Optional DC balancing on a cycle-to-cycle basis, is also provided to reduce ISI (Inter-Symbol Interference). With pre-emphasis and DC balancing, a low distortion eye-pattern is provided at the receiver end of the cable. A cable deskew capability has been added to deskew long cables of pair-to-pair skew of up to +/−1 LVDS data bit time (up to 80 MHz Clock Rate). These three enhancements allow cables 5+ meters in length to be driven.

The chipset is an ideal means to solve EMI and cable size problems associated with wide, high speed TTL interfaces.

For more details, please refer to the section of this datasheet.

产品特性

  • Up to 5.38 Gbits/sec Bandwidth
  • 33 MHz to 112 MHz Input Clock Support
  • LVDS SER/DES Reduces Cable and Connector Size
  • Pre-emphasis Reduces Cable Loading Effects
  • DC Balance Data Transmission Provided by Transmitter Reduces ISI Distortion
  • Cable Deskew of +/−1 LVDS Data Bit Time (up to 80 MHz Clock Rate)
  • 5V Tolerant TxIN and Control Input Pins
  • Flow Through Pinout for Easy PCB Design
  • +3.3V Supply Voltage
  • Transmitter Rejects Cycle-to-Cycle Jitter
  • Conforms to ANSI/TIA/EIA-644-1995 LVDS Standard
  • Both Devices are Available in 100 Lead TQFP Package

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