MV78100
Hardware Specifications
9.7.2
PCI Express (PCIe) Interface Electrical Characteristics
9.7.2.1
PCI Express Interface Driver and Receiver Characteristics
Table 53: PCI Express Interface Driver and Receiver Characteristics
Description
Symbol
BR
Min
Max
Units
Gbps
ps
Notes
Baud rate
2.5
-
-
Unit interval
UI
400.0
Baud rate tolerance
Bppm
-300.0
300.0
ppm
2
Driver parameters
Differential peak to peak output voltage
Minimum TX eye w idth
VTXpp
TTXeye
0.8
0.75
10.0
6.0
1.2
V
UI
-
-
-
Differential return loss
TRLdiff
-
-
dB
1
1
-
Common mode return loss
DC differential TX impedance
TRLcm
dB
ZTXdiff
80.0
120.0
Ohm
Receiver parameters
VRXpp
Differential input peak to peak voltage
Minimum receiver eye w idth
Differential return loss
0.175
0.4
1.2
V
-
-
TRXeye
-
UI
RRLdiff
10.0
6.0
-
dB
1
1
-
Common mode return loss
RRLcm
-
dB
DC differential RX impedance
DC common input impedance
ZRXdiff
80.0
40.0
120.0
60.0
Ohm
Ohm
ZRXcm
-
Notes :
General Comment: For more information, refer to the PCI Express Base Specification, Revision 1.1, March, 2005.
1. Defined from 50 MHz to 1.25 GHz.
2. Does not account for SSC dictated variations.
MV-S104552-U0 Rev. D
Page 106
Copyright © 2008 Marvell
December 6, 2008, Preliminary
Document Classification: Proprietary Information
MARVELL [ MARVELL TECHNOLOGY GROUP LTD. ]
