78Q2123/F1 Maxim Integrated, 78Q2123/F1 Datasheet - Page 25

• Manufacturer Part Number: 78Q2123/F1
• Description: Ethernet ICs
• Manufacturer: Maxim Integrated

Specifications of 78Q2123/F1

• Rohs: yes

DS_21x3_001
4.5
4.5.1 RST Characteristics
4.5.2 MII Transmit Interface
Rev. 1.6
Characteristics
Setup Time: TX_CLK to
TXD[3:0], TX_EN, TX_ER
Hold Time: TX_CLK to
TXD[3:0], TX_EN, TX_ER
CKIN-to-TX_CLK Delay
TX_CLK Duty-Cycle
Parameter
RST Pulse Assertion
Digital Timing Characteristics
Oscillator
VCC
RST
Figure 2: Transmit Inputs to the 78Q2123/78Q2133
Symbol
Symbol
Treset
TX
TX
T
CKIN
HD
SU
Figure 1: RST Pulse Duration
Conditions
VCC = 3.3V and
oscillator stabilized
Conditions
T
reset
Min
Min
30
15
40
0
0
78Q2123/78Q2133 Data Sheet
Nom
Nom
Max
Max
40
60
Oscillator
Cycles
Clock
Unit
Unit
ns
ns
ns
%
25