84
CHAPTER 3: ELECTRICAL SPECIFICATIONS
Table 40 Gigabit GMII/MII Ethernet Interface Timing Description
SYMBOL
GIGABIT PARAMETER
MIN
TYP
MAX
UNIT
ns
COMMENT
Tcgt
Transmit Cycle Time, GMII
8.0
Tcgo
Tcgr
Output Time, GMII
Receive Cycle Time
Setup Time
3.0
6.0
ns
8.0
ns
Tcgs
Tcgh
Tcmt
Tcmo
2.0
0.0
ns
Hold Time
ns
Transmit Cycle Time, MII
Output Time, MII
40/400
ns
100BaseT/10BaseT
2
12
ns
Table 41 Gigabit TBI Interface Timing Description
SYMBOL
TBI
PARAMETER
MIN
TYP
MAX
TOL
UNIT
ns
Tctt
Tcto
Tctr
Tctd
Tcts
Tcth
Transmit Cycle Time
Output Time
8.0
3.0
6.0*
ns
Receive Cycle Time
Rclk/Rclkn Deviation
Setup Time
16.0
ns
1.0
ns
2.0
0.0
ns
Hold Time
ns
*
For Fibre Channel applications this value is 7.0ns for a transmit cycle time of 9.4ns.
C3EN
FREESCALE [ Freescale ]
