AM79C984 Advanced Micro Devices, AM79C984 Datasheet - Page 31

• Manufacturer Part Number: AM79C984
• Description: enhanced Integrated Multiport Repeater (eIMR)
• Manufacturer: Advanced Micro Devices

Visual Status Display
LDA/B[4:0] and LDGA/B provide visual status indicators
for the eIMR. LDA/B[4:0] displays Link, Carrier Sense,
Collision, and Partition information for the TP and AUI
ports. LDGA/B display global Carrier Sense, Collision,
and Jabber information.
In a multiple eIMR configuration, the global LED drivers
(LDGA/B) from each chip can be tied together to drive
a single pair of global status LEDs. The open drain out-
put of these drivers facilitate this configuration. Refer to
Figure 13.
P R E L I M I N A R Y
Am79C984A
Figure 13. Visual Status Display Connection
LDA[4:0]
LDB[4:0]
LDA[4:0]
LDB[4:0]
LDGA
LDGB
LDGA
LDGB
VDD
20650B-18
20650A-19
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