am79c988a ETC-unknow, am79c988a Datasheet - Page 19

• Manufacturer Part Number: am79c988a
• Description: Quad Integrated Ethernet Transceiver Quiet
• Manufacturer: ETC-unknow

Notes:
1. Parameter is not tested.
2. Uses switching test load.
3. PDO pulses narrower than
4. PDO pulses narrower than
5. RXD pulses narrower than
6. RXD pulses narrower than
7. Parameter tested functionally.
Parameter
Symbol
sense on.
will turn internal PDO carrier sense off.
sense on.
turn internal RXD carrier sense off.
t
SSDOZ
t
t
SDS
DDS
Clock to High Impedance Output
DIR going HIGH to SDATA Input Valid
DIR going LOW to SDATA Output Valid
Parameter Description
t
t
t
t
PWORD
PWODO
PWKRD
PWKDO
(min) will be rejected; RXD pulses longer than
(min) will maintain internal RXD carrier sense; RXD pulses longer than
(min) will maintain internal PDO carrier sense on; PDO pulses longer than
(min) will be rejected; PDO pulses wider than
P R E L I M I N A R Y
Am79C988A
Test Conditions
(Note 7)
(Note 7)
t
t
PWODO
PWORD
Min
100
-50
(max) will turn internal PDO carrier
-
(max) will turn internal RXD carrier
Max
100
150
40
t
PWKRD
t
PWKDO
Unit
(max) will
ns
ns
ns
(max)
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