78Q2123/78Q2133 MicroPHY™
10/100BASE-TX Transceiver
10BASE-T Transmitter (Informative)
The specifications in the following table are included for information only. They are mainly a function of the
external transformer and termination resistors used for measurements.
PARAMETER
Output return loss
Output Impedance Balance
CONDITION
MIN
NOM
MAX
UNIT
dB
dB
15
f
10
1 MHz < freq < 20 MHz
29 − 17log
Peak Common-mode Output Voltage
Common-mode rejection
50
100
mV
mV
15 Vpk, 10.1 MHz sine
wave applied to
transmitter common-
mode. All data
sequences.
Common-mode rejection jitter
15 Vpk, 10.1 MHz sine
wave applied to
transmitter common-
mode. All data
1
ns
sequences.
10BASE-T Receiver
PARAMETER
CONDITION
MIN
NOM
10
MAX
UNIT
BT
ns
mVppd
mVppd
kΩ
DLL Phase Acquisition Time
Jitter Tolerance (pk-pk)
Input Squelched Threshold
Input Unsquelched Threshold
Differential Input Resistance
Bit Error Ratio
30
500
275
600
350
20
700
425
10-10
Common-mode rejection
Square wave
0 < f < 500 kHz
Not tested
25
V
Page: 32 of 42
© 2009 Teridian Semiconductor Corporation
Rev 1.5
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
