PMC-HS-SERIAL 四通道高速模块

描述

PMC-HS-SERIAL 四通道高速模块

特点:
四通道高速串行
最大数据速率10mbit /sec(同步)和2mbit /sec(异步)
支持异步、单同步、双同步、HDLC、SDLC、LAPB、LAPD、ISDN、PPP通信协议
支持RS-232、RS-422、EIA-449、EIA-530或V.35物理接口
PMC- hs – serial是一种单宽PMC，为空间受限的高性能通信应用提供4个高速异步或同步串行通道。使用外部时钟的同步协议支持的最大数据速率为10mb /s。异步协议支持高达2 Mb/s的波特率，在RS-422接口模式下使用标准14.745 MHz振荡器，波特率可达921.6 k波特。四个通道中的每一个都是完全可编程的，以支持许多高性能串行通信协议，如同步、单同步、双同步、HDLC、SDLC、LAPB、LAPD、ISDN和PPP。

PMC-HS串行支持广泛的物理接口选择，仅通过软件进行配置。通道可以单独选择RS-232, RS-422, EIA-449, EIA-530或V.35。不需要重新配置硬件。后面板P4连接器和前面板I/O连接器为每个通道提供7对信号。可选的过渡电缆可用于连接68针前面板I/O连接器到四个db25。

14.7456 MHz标准振荡器提供标准异步波特率。此外，用户提供的振荡器位置可用于自定义波特率生成。每个通道都完全支持中断。中断源包括发送错误、接收错误、发送数据包完成和接收数据包完成。

PMC-HS-SERIAL

PMC-HS-SERIAL 四通道高速模块

Features:
Four Channels of High Speed Serial
Maximum Data Rate of 10 Mbit/sec (synchronous) and 2 Mbit/sec (Asynchronous)
Asynchronous, Monosync, Bisync, HDLC, SDLC, LAPB, LAPD, ISDN, and PPP Communication Protocols Supported
RS-232, RS-422, EIA-449, EIA-530, or V.35 Physical Interfaces Supported
PMC-HS-SERIAL is a single-wide PMC that provides 4 high-speed asynchronous or synchronous serial channels for space-constrained, high-performance communications applications. A maximum data rate of 10 Mb/s is supported for synchronous protocols using an external clock. Up to 2 Mb/s is supported for asynchronous protocols, with popular baud rates of up to 921.6 Kbaud available using the standard 14.745 MHz oscillator in RS-422 interface mode. Each of the four channels is fully programmable to support many high-performance serial communications protocols, such as synchronous, monosync, bisync, HDLC, SDLC, LAPB, LAPD, ISDN, and PPP.

The PMC-HS Serial supports a wide selection of physical interfaces, configurable by software alone. Channels can be individually selected as RS-232, RS-422, EIA-449, EIA-530, or V.35. No hardware re-configuration is required. Seven signal pairs for each channel are available at the rear-panel P4 connector and the front panel I/O connector. An optional transition cable is available to interface the 68-pin front panel I/O connector to four DB25s.

A 14.7456 MHz standard oscillator provides standard asynchronous baud rates. In addition, a user-supplied oscillator location is available for custom baud rate generation. Interrupts are fully supported for each channel. Interrupts sources include transmission error, reception error, completions of transmit packets and completions of receive packets.