AM79C989JCT Advanced Micro Devices, AM79C989JCT Datasheet - Page 30

• Manufacturer Part Number: AM79C989JCT
• Description: Quad Ethernet Switching Transceiver (QuEST)
• Manufacturer: Advanced Micro Devices

Note: 1. Parameter not tested.
30
Attachment Unit Interface (AUI) (continued)
10BASE-T Receive Interface
Power Supply Current
Parameter
Symbol
V
V
V
V
V
V
V
V
V
V
V
R
V
V
I
V
I
V
RXDTH
DDTX
LTSQ+
LTHS+
IRXD
LTSQ-
TSQ+
LTHS-
AICM
THS+
AIDV
TSQ-
THS-
ASQ
TIVB
TIDV
RXD
ATH
Receive Data Differential Input
Threshold CI/DI
DI and CI Differential Input
Threshold (Squelch)
DI and CI Differential Mode Input
Voltage Range
DI and CI Input Bias Voltage
Input Current at RXD
RXD Differential Input Resistance
RXD+, RXD- Open Circuit Input
Voltage (Bias)
Differential Mode Input Voltage Range
(RXD )
RXD Positive Squelch Threshold
(Peak)
RXD Negative Squelch Threshold
(Peak)
RXD Post-Squelch Positive Threshold
(Peak)
RXD Post-Squelch Negative
Threshold (Peak)
RXD Positive Squelch Threshold
(Peak). Extended Distance Mode.
RXD Negative Squelch Threshold
(Peak). Extended Distance Mode.
RXD Post-Squelch Positive Threshold
(Peak). Extended Distance Mode.
RXD Post-Squelch Negative
Threshold (Peak). Extended Distance
Mode.
RXD Switching Threshold
Power Supply Current (All 10BASE-T
Ports Transmitting)
Parameter Description
P R E L I M I N A R Y
(Note 1)
V
I
V
Sinusoid
5 MHz
Sinusoid
5 MHz
Sinusoid
5 MHz
Sinusoid
5 MHz
Sinusoid
5 MHz
Sinusoid
5 MHz
Sinusoid
5 MHz
Sinusoid
5 MHz
I
(Note 1)
(Note 1)
IN
IN
Am79C989
SSRX
DDTX
= 0 mA
= 0 mA
Test Conditions
<V
= +5.0 V
f 10 MHz
f
f
f
f
f
f
IN
f
<V
10 MHz
10 MHz
10 MHz
10 MHz
10 MHz
10 MHz
10 MHz
DD
V
V
DDTX
DD
-275
-500
-520
-293
-312
-175
-2.5
-3.1
300
150
180
Min
-35
-35
90
10
-3.0
-3.0
V
V
DDTX
DD
-160
-300
-150
-180
+2.5
+3.1
Max
+35
500
520
293
312
175
275
-90
35
-1.0
-1.5
Unit
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mA
mV
k
V
V
V
V
A