UPD98405 Datasheet, PDF (58/64 Pages) NEC – 155M ATM INTEGRATED SAR CONTROLLER

PMD serial interface (internal PHY mode)
Parameter
REFCLK cycle time
REFCLK high-level width
Symbol
tCYRF
tWRFH
REFCLK low-level width
tWRFL
µPD98405
Condition
MIN.
TYP.
MAX. Unit
–20 ppm 51.4403 +20 ppm ns *
0.4 ×
tCYRF
0.4 ×
tCYRF
0.4 ×
tCYRF
0.4 ×
tCYRF
ns *
ns *
REFCLK
tWRFH
tCYRF
tWRFL
58
Data Sheet S12689EJ2V0DS00