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IA80C152

Preliminary Data Sheet

UNIVERSAL COMMUNICATIONS CONTROLLER

Copyright

© 2000

[_________The End of Obsolescence

™

The GSC is a serial interface that can be programmed to support CSMA/CD, SDLC, user definable

protocols, and limited HDLC. Protocol specific features are supported in hardware such as address

recognition, collision resolution, CRC generation and errors, automatic re-transmission, and

hardware acknowledge. The CSMA/CD protocol meets the requirements of ISO/IEC 8802-3 and

ANSI/IEEE Std 802.3 to the extent implemented in the original IC. The SDLC protocol meets

the requirements of IBM GA27-3093-04 to the extent implemented in the original IC.

Functional Block Diagram

Figure 4 shows the major functional blocks of the IA80C152. Each version of the IA80C152

function identically to each other with the exception of the 2 additional I/O ports (Port 5 and

Port 6) in the JB and JD versions.

Figure 4 - Functional Block Diagram

256x8 RAM

C8051

CPU

UART

DMA

GSC

Port 0

Port 1

Port 2

Port 4

Port 3

Port 5

Port 6

Interrupts

Timers

Control

Address/Data

Clock Gen.

& Timing

XTAL

Reset

Memory

Control

I/O for Memory, GSC, DMA, UART, Interrupts, Timers

= JB and JD Versions Only