Datasheet

 2016-2017 Microchip Technology Inc. DS00002117F-page 56
KSZ9031RNX
Note 6-2 Measured with pin input voltage level at one-half DVDDH.
Note 6-3 Measured differentially after 1:1 transformer.
Note 6-4 Measured differentially after 1:1 transformer.
TABLE 6-6: PULL-UP PINS (Note 6-2)
Parameters Symbol Min. Typ. Max. Units Note
Internal Pull-Up Resistance
(MDC, MDIO,
RESET_N pins)
pu
13 22 31
k
DVDDH (digital I/O) = 3.3V
16 28 39 DVDDH (digital I/O) = 2.5V
26 44 62 DVDDH (digital I/O) = 1.8V
TABLE 6-7: 100BASE-TX TRANSMIT (Note 6-3)
Parameters Symbol Min. Typ. Max. Units Note
Peak Differential Output
Voltage
V
O
0.95 — 1.05 V 100 termination across differential
output
Output Voltage Imbalance V
IMB
—— 2 %100 termination across differential
output
Rise/Fall Time t
r
, t
f
3—5ns —
Rise/Fall Time Imbalance — 0 — 0.5 ns —
Duty Cycle Distortion — — — ±0.25 ns —
Overshoot — — — 5 % —
Output Jitter — — 0.7 — ns Peak-to-peak
TABLE 6-8: 10BASE-T TRANSMIT (Note 6-4)
Parameters Symbol Min. Typ. Max. Units Note
Peak Differential Output
Voltage
V
P
2.2 — 2.8 V 100 termination across differential
output
Jitter Added — — — 3.5 ns Peak-to-peak
Harmonic Rejection — — –31 — dB Transmit all-one signal sequence
TABLE 6-9: 10BASE-T RECEIVE
Parameters Symbol Min. Typ. Max. Units Note
Squelch Threshold V
SQ
300 400 — mV 5 MHz square wave
TABLE 6-10: TRANSMITTER - DRIVE SETTING
Parameters Symbol Min. Typ. Max. Units Note
Reference Voltage of I
SET
V
SET
—1.2— V R(I
SET
) = 12.1 k
TABLE 6-11: LDO CONTROLLER - DRIVE RANGE
Parameters Symbol Min. Typ. Max. Units Note
Output drive range for
LDO_O (Pin 43) to gate
input of P-channel
MOSFET
V
LDO_O
0.85 — 2.8
V
AVDDH = 3.3V for MOSFET source
voltage
0.85 — 2.0
AVDDH = 2.5V for MOSFET source
voltage (recommended for commer-
cial temperature range operation only)