am79c981 Advanced Micro Devices, am79c981 Datasheet - Page 24

• Manufacturer Part Number: am79c981
• Description: Integrated Multiport Repeater Plus? Imr+? ??9
• Manufacturer: Advanced Micro Devices

APPLICATIONS
A fully managed multiport repeater can be easily built by
interfacing the IMR+ chip with the Hardware Imple-
mented Management Information Base (HIMIB),
Am79C987 device. The HIMIB device interfaces with all
common Microprocessor System Busses with a
1–94
AMD
System
Host
Bus
Address
Decode
Buffer
Data
Figure 8. Simplified ISA-HUB Block Diagram
CS
C/D
D [7–0]
RD
WR
RDY
INT
PRELIMINARY
HIMIB
Am79C981
SCLK
CRS
ACK
COL
DAT
JAM
STR
RST
SO
CK
SI
minimum of external logic. Note that additional buffering
of DAT and JAM are required for most applications. For
more information, refer to AMD’s IEEE 802.3 Repeater
Technical Manual (PID# 17314A).
CRS
STR
SI
SO
SCLK
X1
IMR+
REQ
Expansion
Bus
17306B-14