am79c875 Advanced Micro Devices, am79c875 Datasheet - Page 35

• Manufacturer Part Number: am79c875
• Description: Netphy ?lp Low Power Quad 10/100-tx/fx Ethernet Transceiver
• Manufacturer: Advanced Micro Devices

Power Supply Current Consumption
Notes:
1. Applies to FXR+, FXR-, SDI+, and SDI- inputs only. Valid only when Port 3 is in PECL mode. V
2. Applies to RX± inputs when the corresponding port is in MLT-3 mode only. The RX± input is guaranteed to assert internal
3. Applies to RX± inputs when the corresponding port is in MLT-3 mode only. The RX± input is guaranteed to de-assert internal
4. Applies to FXT+ and FXT- outputs only. Valid only when Port 3 is in PECL mode. V
5. Applies to digital inputs and all bidirectional pins. RX± limits up to 1.0 mA max for I
6. Applies to TX± differential outputs only. Valid only when the port is in the MLT-3 mode.
7. V
8. Parameter not tested.
9. Only valid for TX output when the port is in the 10BASE-T mode.
10. I
11. Tested with all TX± output pins driving the rated load.
12. Assumes 80% Utilization with all ports at 10 Mbps, using 1:1 transformers.
13. Typical is 30% network utilization.
14. Assumes outputs are loaded, and all LEDs are used.
V
V
V
V
I
OZ
Symbol
TSQ
THS
RXDTH
TX10NE
Symbol
transceiver.
signal detect for any valid peak-to-peak input signal greater than V
signal for any peak to peak signal less than V
resistors effect this value.
OZ
TXR
I
I
DD
DD
applies to all high-impedance output pins. Pull-up/pull-down resistors effect this value.
is the ratio of the magnitude of TX± in the positive direction to the magnitude of TX± in the negative direction.
RXr 10BASE-T Squelch
Threshold
RXr Post-Squelch Differential
Threshold 10BASE-T (Note 8)
10BASE-T RXr Differential
Switching Threshold (Note 8)
10BASE-T Near-End Peak
Differential Voltage (Note 9)
Output Leakage Current
(Note 10)
Power Supply Current
for 10BASE-T 
(Note 11)
Power Supply Current
for 100BASE-TX/FX
(Note 11)
Parameter Description
Description
Parameter
Test Conditions
V
V
DD
DD
Test Conditions
Sinusoid 5 MHz<f<10 MHz
Sinusoid 5 MHz<f<10 MHz
Sinusoid 5 MHz<f<10 MHz
MLT-3/10BASE-T Test Load
0.4 V < V
= maximum
= maximum
SDD
MIN. Tested within limits of V
OUT
Am79C875
< V
DD
Minimum
-
-
SDA
MAX. Tested within limits of V
(Note 13)
Typical
Minimum
SDD
260
300
IL
300
150
-60
2.2
-30
and -1.0 mA min for I
DD
and V
is that of the fiber transceiver.
SDA
(Note 11,12)
Maximum
.
(Note 11)
DD
480
380
Maximum
is that of the fiber
SDD
585
293
100
2.8
60
IH
. Pull-up/pull-down
and V
SDA
Units
mA
mA
.
Units
mV
mV
mV
PA
V
35