ACD82224 Datasheet, PDF (25/77 Pages) List of Unclassifed Manufacturers – 24 Ports 10/100 Fast Ethernet Switch

falling edge of LEDCLK, and should be sampled by the rising edge of LEDCLK. LED data of
port-23 are clocked out first, followed by port-22 down to port-0. All LED signals are low active.
The signals in the LED interface is described in Table-6.10:
Table-6.10: LED Interface Signals
Name Type
Description
LEDVLD0
O LED signal valid 0
LEDVLD1
O LED signal valid 1
LEDCLK
O 2.5 MHz LED clock
nLED0
O Dual purpose indicator
nLED1
O Dual purpose indicator
nLED2
O Dual purpose indicator
nLED3
O Dual purpose indicator
Group 0
1
0
-
NA
full duplex indication
port speed
(1=10Mbps,0=100Mbps)
Link status
Group 1
0
1
-
frame error indicator
collision indication
receiving activity
transmit activity
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