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AM79C989 датащи(PDF) 32 Page - Advanced Micro Devices

номер детали AM79C989
подробное описание детали  Quad Ethernet Switching Transceiver (QuEST??
PDF  37 Pages
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производитель  AMD [Advanced Micro Devices]
домашняя страница  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C989 датащи(HTML) 32 Page - Advanced Micro Devices

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32
Am79C989
PRELIMINARY
QuASI Interface
Figure 2.
QuASI Interface Timing Diagram
Not Defined
Channel 0
Channel 1
Channel 2
Channel 3
Channel 0
Channel 1
Channel 3
Channel 0
Channel 1
Channel 2
Channel 3
SCLK
QRST/STRB
QTX_EN
QTX_DATA
QRX_DATA
QRX_VALID
QRX_CRS
QCLSN
1
3
4
9
6
7
5
2
3
2
8
9B
Not defined
21173B-6
No.
Symbol
Parameter Description
Min
Max
Unit
1tMSI1
SCLK Period (40 MHz, 100 ppm).
Not Tested.
24.9975
25.0025
ns
2tMSI2
QRST/STRB hold time after rising edgeof SLCK.
3
ns
3tMSI3
QRST/STRB setup time to rising edge of SCLK.
5
ns
4tMSI4
SCLK high time.
10
ns
5tMSI5
SCLK low time.
10
ns
6tMSI6
QTX_EN and QTX_DATA setup time to rising edge of SCLK.
3
ns
7tMSI7
QTX_EN and QTX_DATA hold time from rising edge of SCLK.
5
ns
8tMSI8
QRX_DATA, QRX_VALID, QCLSN, QRX_CRS delay until valid
from rising edge of SCLK.
4
17.5
ns
9tMSI9
Reset Pulse Width of QRST/STRB.
Parameter tested functionally.
1
µs
9B
tMSI9B
Strobe Pulse Width of QRST/STRB.
9
25
ns



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