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AX88615P Datasheet(PDF) 9 Page - ASIX Electronics Corporation

Part # AX88615P
Description  5-Port 10/100BASE Ethernet Switch
PDF  26 Pages
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Manufacturer  ASIX [ASIX Electronics Corporation]
Direct Link  http://www.asix.com.tw
Logo ASIX - ASIX Electronics Corporation

AX88615P Datasheet(HTML) 9 Page - ASIX Electronics Corporation

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ASIX ELECTRONICS CORPORATION
9
CONFIDENTIAL
AX88615P 5-Port 10/100Mb Switch Controller
PRELIMINARY
2.2 LED Display
Signal Name
Type Pin No.
Description
LED[1:0]
O
85, 84
SSRAM Fail / Buffer Memory Utilization LED :
v As utilization of buffer memory
The buffer utilization of switch uses the following definition:
1: Led off
0: Led on
For detail , see the LED timing specification.
v SSRAM Fail
LED[0] : This signal also indicates SRAM chip 0 fail ( continue active low )
during the interval of sequence shift data.
LED[1] : This signal also indicates SRAM chip 1 fail ( continue active low )
during the interval of sequence shift data.
LED_CK
O
86
LED Clock : The signal is a discontinue clock for LED signals serial shift
out. The clock period width is 400nS and last 32 cycle with every 52.4ms
repeated.
2.3 Buffer memory pins group
Signal Name
Type Pin No.
Description
BMA[16:0]
O
197–201
16,17
170,166
143,142
23-18
SSRAM Address Bus
BMD[31:24]
BMD[23:16]
BMD[15:8]
BMD[7:0]
I/O
24, 26-32
133-138
140, 141
171-173
175-179
180,
188-194
SSRAM Data Bus
/BMWE
O
158
SSRAM Write Strobe
/BMOE
O
159
SSRAM Read Strobe
BMCLK
O
72
SSRAM CLOCK
Utilization (%)
UTI0
UTI1
UTI2
UTI3
UTI4
UTI5
0
1
1
1
1
1
1
10
0
1
1
1
1
1
20
0
0
1
1
1
1
40
0
0
0
1
1
1
60
0
0
0
0
1
1
80
0
0
0
0
0
1
95
0
0
0
0
0
0



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