PM3386 Datasheet, PDF (308/315 Pages) PMC-Sierra, Inc – Dual Gigabit Ethernet Controller

RELEASED
DATASHEET
PMC-1991129
ISSUE 7
PM3386
DUAL GIGABIT ETHERNET CONTROLLER
Table 53 - MDC / MDIO Interface Timing
Symbol
tPmcd
tHmcd
tLmcd
tPmdo
tSmdi
tHmdi
Description
Min
MDC Period
2.0
Time High MDC
160
Time Low MDC
160
MDC High to Valid MDIO Data 10
MDIO Setup Time to MDC
15
MDIO Hold Time to MDC
Typ Max
2.5
100
0
Units
MHz
ns
ns
ns
ns
ns
Figure 36 - MDC / MDIO Physical Timing
MDC
tHmcd
tL md c
tPmdc
MDIO
tPmdo
tHmdi
tSmdi
Notes on MDC/MDIO I/O Timing:
Note 1: When a set-up time is specified between an input and a clock, the set-up
time is the time in nanoseconds from the 1.4 Volt point of the input to the
1.4 Volt point of the clock.
Note 2:
Note 3:
When a hold time is specified between an input and a clock, the hold time
is the time in nanoseconds from the 1.4 Volt point of the clock to the 1.4
Volt point of the input.
Output propagation delay time is the time in nanoseconds from the 1.4
Volt point of the reference signal to the 1.4 Volt point of the output.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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