GE IS200RAPAG1BBA rack power supply

Description

GE General Electric Technical Specifications: IS200RAPAG1BBA

The Serial Input Output Module, MDX-SI02, is designed to

be a multiprotocol asynchronous or synchronous I/O

module for the STD-Z80 Bus. The module is designed

around the Mostek MK3887 Z80-S10 which provides two

full duplex serial data channels. Each channel has an

increase module flexibility. Both channels are capable of

handling asynchronous, synchronous, and synchronous

bit-oriented protocols such as BISYNC, SDLC, HDLC, and

virtually any other serial protocol.

The MK3887 can generate and check CRC codes in any

MDX-SI02

Figure 1

COMPUTER

PRODUCTS

DIVISION

MDX-SI02

synchronous mode and can be programmed by the CPU for

any traditional asynchronous format. The serial input and

output is fully buffered and is provided at the connector as

either 20mA current loop or RS-232-C levels. A modem

control section is also provided for handshaking and status.

The MDX-SI02 module can be jumper-configured as a Data

Terminal (DTE) or as a modem (DEC) in order to facilitate a

variety of interface configurations.

Figure 2 is a block diagram of the MDX-SI02 module. It

consists of five main elements. They are the channel

configuration headers, line drivers and receivers, MK3887

Z80-SIO, programmable Baud rate generator, and address

decode and data-bus buffers. Input and output to the board

is provided via two 26-pin connectors. One connector is

dedicated for each channel.

Several features are available as options that are selected

via the channel-configuration headers. The headers are

used to select the orientation of the data communication

interface or the mode of the 20mA current loop. The MDX

SI02 can be selected to act as either a terminal or processor

(Data Terminal Equipment DTE) or as a modem (Data

Communications Equipment DCE). The header allows

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