Electrical Specifications
AC Electrical Specifications
Copyright © 2008 Marvell
Doc. No. MV-S104859-U0 Rev. E
December 2, 2008, Preliminary
Document Classification: Proprietary Information
Page 95
8.6.4
Gigabit Media Independent Interface (GMII) AC Timing
8.6.4.1
GMII AC Timing Table
Table 51: GMII AC Timing Table
8.6.4.2
GMII Test Circuit
Figure 11: GMII Test Circuit
Min
Max
GTX_CLK cycle time
tCK
7.5
8.5
ns
-
RX_CLK cycle time
tCKrx
7.5
-
ns
-
GTX_CLK and RX_CLK high level w idth
tHIGH
2.5
-
ns
1
GTX_CLK and RX_CLK low level w idth
tLOW
2.5
-
ns
1
GTX_CLK and RX_CLK rise time
tR
-
1.0
ns
1, 2
GTX_CLK and RX_CLK fall time
tF
-
1.0
ns
1, 2
Data input setup time relative to RX_CLK rising edge
tSETUP
2.0
-
ns
-
Data input hold time relative to RX_CLK rising edge
tHOLD
0.0
-
ns
-
Data output valid before GTX_CLK rising edge
tOVB
2.5
-
ns
1
Data output valid after GTX_CLK rising edge
tOVA
0.5
-
ns
1
Notes:
General comment: All values w ere measured from VIL(max) to VIH(min), unless otherw ise specified.
1. For all signals, the load is CL = 5 pF.
2. Rise time measured from VIL(max) to VIH(min), fall time measured from VIH(min) to VIL(max).
Notes
125 MHz
Description
Sym bol
Units
CL
Test Point
Summary of Contents for Integrated Controller 88F6281
Page 138: ...THIS PAGE IS INTENTIONALLY LEFT BLANK ...
Page 139: ......