TI380C25 Datasheet, PDF (1/71 Pages) Texas Instruments – TOKEN-RING COMMPROCESSOR

• IEEE 802.5 and IBM Token-Ring Network™
Compatible
• Compatible With TI380FPA FNL
PacketBlaster™
• Token-Ring Features
– 16- or 4-Megabit-per-Second Data Rates
– Supports up to 18K-Byte Frame Size
(16-Mbps Operation Only)
– Supports Universal- and Local-Network
Addressing
– Early Token-Release Option
(16-Mbps Operation Only)
– Compatible With the TMS38054
• Expandable Local LAN-Subsystem Memory
Space up to 2 Megabytes
• Glueless Interface to DRAMs
• High-Performance 16-Bit CPU for
Communications-Protocol Processing
• 1- to 16.5-Megabyte-per-Second
High-Speed Bus Master DMA Interface
• Low-Cost Host-Slave I/O Interface Option
• Up to 32-Bit Host Address Bus
• Selectable Host System-Bus Options
• Adapter Local-Bus Speed Is Switchable
Between 4 MHz and 6 MHz
• 80x8x or 68xxx-Type Bus and Memory
Organization
– 8 - or 16-Bit Data Bus on 80x8x Buses
– Optional Parity Checking
TI380C25
TOKEN-RING COMMPROCESSOR
SPWS012 – JANUARY 1995
• Dual-Port DMA and Direct I / O Transfers to
Host Bus
• Supports 8 - or 16-Bit Pseudo-DMA
Operation
• Enhanced-Address-Copy-Option (EACO)
Interface Supports External
Address-Checking Logic for Bridging or
External Custom Applications
• Support for Module High-Impedance
In-Circuit Testing
• Built-In Real-Time Error Detection
• Bring-Up and Self-Test Diagnostics With
Loopback
• Automatic Frame-Buffer Management
• 2- to 33-MHz System-Bus Clock
• Slow-Clock Low-Power Mode
• Single 5-V Supply
• 0.8-µm CMOS Technology
• 250-mA Typical Latch-Up Immunity at 25°C
• ESD Protection Exceeds 2 000 V
• 144-Pin Plastic Thin Quad Flat Package
(PGE Suffix)
• Operating Temperature Range
0°C to 70°C
Attached
System
Bus
(2 MHz
to
33 MHz)
LAN Subsystem
TI380C25
16
Memory
Token-Ring
Physical-Layer
Circuitry
Transmit
Receive
To
Network
Figure 1. Network-Commprocessor Applications Diagram
IBM and Token-Ring Network are trademarks of International Business Machines Corp.
PacketBlaster is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1994, Texas Instruments Incorporated
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443
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