IA80C152 Datasheet, PDF (4/32 Pages) InnovASIC, Inc – UNIVERSAL COMMUNICATIONS CONTROLLER

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IA80C152
Preliminary Data Sheet
UNIVERSAL COMMUNICATIONS CONTROLLER
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.
I/O for Memory, GSC, DMA, UART, Interrupts, Timers
Port 0
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Memory
Control
XTAL
Reset
Clock Gen.
& Timing
256x8 RAM
C8051
CPU
Control
Address/Data
UART
Interrupts
Timers
DMA
GSC
= JB and JD Versions Only
Figure 4 - Functional Block Diagram
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