TI380FPAA Datasheet, PDF (1/24 Pages) Texas Instruments – PACKETBLASTERE™

TI380FPAA
PACKETBLASTER ™
D Frame-Processing Accelerator for TI380C2x
and TI380C3x
D Supports TI380C2x and TI380C3x
Token-Ring Adapters
D Supports TI380C2x Ethernet™ Adapters
D Supports 4- or 6-MHz Adapter Local Bus
Operation
D Interfaces Directly to TI380C2x Network
Commprocessors™
D Hardware Capture of Network Statistics
D Increases Adapter Frame-Processing Rate
to up to 28K Frames per Second
D Single 5-V Supply
D 0.8-µm CMOS Technology
D 52-Pin Plastic Leaded Chip Carrier (FN)
D Operating Temperature Range
0°C to 70°C
FN PACKAGE
( TOP VIEW )
SPWS038 – MAY 1997
7 6 5 4 3 2 1 52 51 50 49 48 47
MADH0
MADH1
MADH2
VSSL
VSS
MADH3
VSSC
MADH4
VDD
VDDL
MADH5
MADH6
MADH7
8
46
9
45
10
44
11
43
12
42
13
41
14
40
15
39
16
38
17
37
18
36
19
35
20
34
21 22 23 24 25 26 27 28 29 30 31 32 33
PLLVDD
PLLCAP
PLLVSS
MBCLK1
NC
MRESET
VSSL
MANT0
MANT1
MBGR
VDDL
EXTINT0
MBRQ
description
The TI380FPAA frame-processing accelerator (FPA) provides hardware to accelerate the processing rate of
frames by the network communications processor (commprocessor). It supports a 4-MHz or 6-MHz adapter
local-bus operation. The CPU of a normal TI380C2x or TI380C3x adapter is responsible for frame transport
between network and host, gathering of adapter and network statistics, local network management protocols,
and medium-access-control (MAC) protocols. The TI380FPAA puts the performance bottlenecks of frame
transport and statistics-gathering into dedicated hardware, leaving the CPU to run MAC and management
protocols. It is a drop-in replacement for the TI380FPA device.
The TI380FPAA is responsible for:
D Managing all commprocessor protocol handler (PH) operations. The FPA manages all receive- and
transmit-frame queues.
D Managing adapter buffers. The FPA manages all adapter memory buffers, allocating them to the
appropriate queues as required.
D Managing host direct memory access (DMA) by way of the commprocessor system interface (SIF) DMA
controller.
D Managing frame transfers to the host. The FPA manages queues of frames to and from the host, manages
rx/tx list information, and coordinates the two.
D Gathering adapter and network statistics in dedicated hardware counters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PacketBlaster and Commprocessor are trademarks of Texas Instruments Incorporated.
Ethernet is a registered 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 © 1997, Texas Instruments Incorporated
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443
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