TI380C27 Datasheet, PDF (1/77 Pages) Texas Instruments – DUAL-PROTOCOL COMMPROCESSOR

• IEEE 802.5 and IBM Token-Ring Network™
Compatible
• IEEE 802.3 and Blue Book Ethernet™
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
• Ethernet Features
– 10 Megabit-per-Second Data Rate in
Half-Duplex Mode
– 20 Megabit-per-Second Data Rate in
Full-Duplex Mode
– Compatible With Most Ethernet
Serial-Network-Interface Devices
– Network-Speed Self-Test Feature
• 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
TI380C27
DUAL-PROTOCOL COMMPROCESSOR
SPWS014A – APRIL 1994 – REVISED MARCH 1995
• 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
• 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
TI380C27
Memory
Token-Ring
or Ethernet
Physical-Layer
Circuitry
Transmit
Receive
To
Network
Figure 1. Network-Commprocessor Applications Diagram
IBM and Token-Ring Network are trademarks of International Business Machines Corporation.
PacketBlaster is a trademark of Texas Instruments Incorporated.
Ethernet is a trademark of Xerox Corporation.
ADVANCE INFORMATION concerns new products in the sampling or
preproduction phase of development. Characteristic data and other
specifications are subject to change without notice.
Copyright © 1995, Texas Instruments Incorporated
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443
1