KSZ9021RNI Datasheet, PDF (47/56 Pages) Micrel Semiconductor – Gigabit Ethernet Transceiver with RGMII Support

Micrel, Inc.
KSZ9021RL/RN
Symbol Parameter
Condition
Min Typ Max Units
Supply Current – Transceiver (equivalent to current draw through external transformer center taps for PHY transceivers with
current-mode transmit drivers)
I_AVDDH
3.3V for transceiver
1000Base-T Link-up (no traffic)
1000Base-T Full-duplex @ 100% utilization
75
mA
75
mA
100Base-TX Link-up (no traffic)
29
mA
100Base-TX Full-duplex @ 100% utilization
29
mA
10Base-T Link-up (no traffic)
35
mA
10Base-T Full-duplex @ 100% utilization
43
mA
Power Saving Mode (cable unplugged)
36
mA
Software Power Down Mode (register 0.11 =1)
2
mA
Chip Power Down Mode
(strap-in pins MODE[3:0] = 0111)
1
mA
TTL Inputs
V_IH
Input High Voltage
V_IL
Input Low Voltage
I_IN
Input Current
V_IN = GND ~ V_DDIO
2.0
V
0.8
V
-10
10
µA
TTL Outputs
V_OH
Output High Voltage
V_OL
Output Low Voltage
|I_oz|
Output Tri-State Leakage
I_OH = -4mA
I_OL = 4mA
2.4
V
0.4
V
10
µA
100Base-TX Transmit (measured differentially after 1:1 transformer)
V_O
Peak Differential Output Voltage 100Ω termination across differential output
0.95
V_IMB
Output Voltage Imbalance
100Ω termination across differential output
t_r, t_f
Rise/Fall Time
3
Rise/Fall Time Imbalance
0
1.05
V
2
%
5
ns
0.5
ns
Duty Cycle Distortion
± 0.25
ns
Overshoot
5
%
V_SET
Reference Voltage of I_SET
Output Jitter
R(I_SET) = 4.99K
Peak-to-peak
0.535
V
0.7
1.4
ns
10Base-T Transmit (measured differentially after 1:1 transformer)
V_P
Peak Differential Output Voltage 100Ω termination across differential output
2.2
Jitter Added
Peak-to-peak
2.8
V
3.5
ns
Harmonic Rejection
Transmit all-one signal sequence
-31
dB
10Base-T Receive
V_SQ
Squelch Threshold
5MHz square wave
300 400
mV
Notes:
1. Exceeding the absolute maximum rating may damage the device. Stresses greater than the absolute maximum rating may cause permanent
damage to the device. Operation of the device at these or any other conditions above those specified in the operating sections of this specification is
not implied. Maximum conditions for extended periods may affect reliability.
2. The device is not guaranteed to function outside its operating rating.
3. T_A = 25°C. Specification is for packaged product only.
October 2009
47
M9999-101309-1.1