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AM79C970 Datasheet(PDF) 135 Page - Advanced Micro Devices

Part # AM79C970
Description  PCnetTM-PCI Single-Chip Ethernet Controller for PCI Local Bus
PDF  168 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C970 Datasheet(HTML) 135 Page - Advanced Micro Devices

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AMD
P R E L I M I N A R Y
1-1002
Am79C970
DC CHARACTERISTICS (continued)
Parameter
Symbol
Parameter Description
Test Conditions
Min
Max
Unit
VASQ
DI
± and CI± Differential Input Threshold
–275
–160
mV
(Squelch)
VIRDVD
DI
± and CI± Differential Mode Input
–1.5
1.5
V
Voltage Range
VICM
DI
± and CI± Input Bias Voltage
IIN = 0 mA
AVDD–3.0 AVDD–1.0
V
VOPD
DO
± Undershoot Voltage at ZERO
(Note 9)
–100
mV
Differential on Transmit Return to
ZERO (ETD)
Twisted Pair Interface (10BASE–T)
IIRXD
Input Current at RXD
±
AVDD < VIN < AVDD
–500
500
µA
RRXD
RXD
± Differential Input Resistance
10
K
Ω
VTIVB
RXD
±, RXD– Open Circuit Input
IIN = 0 mA
AVDD–3.0 AVDD–1.5
V
Voltage (Bias)
VTIDV
Differential Mode Input Voltage
AVDD = 5.0 V
–3.1
3.1
V
Range (RXD
±)
VTSQ+
RXD Positive Squelch Threshold (peak)
Sinusoid, 5 MHz
≤ f ≤ 10 MHz
300
520
mV
VTSQ-
RXD Negative Squelch Threshold (peak)
Sinusoid, 5 MHz
≤ f ≤ 10 MHz
–520
–300
mV
VTHS+
RXD Post–squelch Positive Threshold
Sinusoid, 5 MHz
≤ f ≤ 10 MHz
150
293
mV
(peak)
VTHS-
RXD Post-Squelch Negative Threshold
Sinusoid, 5 MHz
≤ f ≤ 10 MHz
–293
–150
mV
(peak)
VLTSQ+
RXD Positive Squelch Threshold (peak)
LRT = LOW
180
312
mV
VLTSQ-
RXD Negative Squelch Threshold (peak)
LRT = LOW
–312
–180
mV
VLTHS+
RXD Post-Squelch Positive Threshold
LRT = LOW
90
176
mV
(peak)
VLTHS-
RXD Post-Squelch Negative Threshold
LRT = LOW
–176
–90
mV
(peak)
VRXDTH
RXD Switching Threshold
(Note 4)
–35
35
mV
VTXH
TXD
± and TXP± Output HIGH Voltage
VSS = 0 V
VDD–0.6
VDD
V
VTXL
TXD
± and TXP± Output LOW Voltage
VDD = 5 V
VSS
VSS+0.6
V
VTXI
TXD
± and TXP± Differential Output
–40
40
mV
Voltage Imbalance
VTXOFF
TXD
± and TXP± Idle Output Voltage
40
mV
RTX
TXD
± , TXP± Differential Driver Output
(Note 4)
40
80
Ω
Impedance



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