RapidIO
Table 47. RapidIO Driver AC Timing Specifications—500 Mbps Data Rate (continued)
Range
Characteristic
Symbol
Unit
Notes
Min
Max
Duty cycle
DC
48
52
—
%
2, 6
3, 6
VOD rise time, 20%–80% of peak-to-peak
differential signal swing
tFALL
200
ps
VOD fall time, 20%–80% of peak-to-peak
differential signal swing
tRISE
200
—
ps
6
Data valid
DV
1260
—
—
ps
ps
ps
Skew of any two data outputs
Skew of single data outputs to associated clock
tDPAIR
180
180
4, 6
5, 6
tSKEW,PAIR
–180
Notes:
1.See Figure 37.
2.Requires 100 ppm long term frequency stability.
3.Measured at VOD = 0 V.
4.Measured using the RapidIO transmit mask shown in Figure 37.
5.See Figure 42.
6.Guaranteed by design.
Table 48. RapidIO Driver AC Timing Specifications—750 Mbps Data Rate
Range
Characteristic
Symbol
Unit
Notes
Min
Max
Differential output high voltage
Differential output low voltage
Duty cycle
VOHD
VOLD
DC
200
–540
48
540
–200
52
mV
mV
%
1
1
2, 6
3, 6
VOD rise time, 20%–80% of peak-to-peak
differential signal swing
tFALL
133
—
ps
VOD fall time, 20%–80% of peak-to-peak
differential signal swing
tRISE
133
—
ps
6
Data valid
DV
800
—
—
ps
ps
ps
6
Skew of any two data outputs
Skew of single data outputs to associated clock
tDPAIR
133
133
4, 6
5, 6
tSKEW,PAIR
–133
Notes:
1.See Figure 37.
2.Requires 100 ppm long term frequency stability.
3.Measured at VOD = 0 V.
4.Measured using the RapidIO transmit mask shown in Figure 37.
5.See Figure 42.
6.Guaranteed by design.
MPC8540 Integrated Processor Hardware Specifications, Rev. 4
Freescale Semiconductor
59
FREESCALE [ Freescale ]
