Serial RapidIO
components are included in this requirement. The reference impedance for return loss measurements is
100-Ω resistive for differential return loss and 25-Ω resistive for common mode.
Table 62. Receiver AC Timing Specifications—1.25 GBaud
Range
Characteristic
Symbol
Unit
Notes
Min
Max
Differential input voltage
V
J
200
0.37
0.55
1600
—
mVp-p Measured at receiver
UI p-p Measured at receiver
UI p-p Measured at receiver
IN
Deterministic jitter tolerance
D
Combined deterministic and random
jitter tolerance
J
—
DR
1
Total jitter tolerance
J
0.65
—
—
UI p-p Measured at receiver
T
Multiple input skew
S
24
ns
Skew at the receiver input between lanes
MI
of a multilane link
–12
Bit error rate
Unit interval
Note:
BER
UI
—
10
—
ps
—
800
800
±100 ppm
1. Total jitter is composed of three components, deterministic jitter, random jitter, and single frequency sinusoidal jitter. The
sinusoidal jitter may have any amplitude and frequency in the unshaded region of Figure 53. The sinusoidal jitter component
is included to ensure margin for low frequency jitter, wander, noise, crosstalk, and other variable system effects.
Table 63. Receiver AC Timing Specifications—2.5 GBaud
Range
Characteristic
Symbol
Unit
Notes
Min
Max
Differential input voltage
V
J
200
0.37
0.55
1600
—
mVp-p Measured at receiver
UI p-p Measured at receiver
UI p-p Measured at receiver
IN
Deterministic jitter tolerance
D
Combined deterministic and random
jitter tolerance
J
—
DR
1
Total jitter tolerance
J
0.65
—
—
UI p-p Measured at receiver
T
Multiple input skew
S
24
ns
Skew at the receiver input between lanes
MI
of a multilane link
–12
Bit error rate
Unit interval
Note:
BER
UI
—
10
—
400
400
ps
±100 ppm
1. Total jitter is composed of three components, deterministic jitter, random jitter, and single frequency sinusoidal jitter. The
sinusoidal jitter may have any amplitude and frequency in the unshaded region of Figure 53. The sinusoidal jitter component
is included to ensure margin for low frequency jitter, wander, noise, crosstalk, and other variable system effects.
MPC8548E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 6
Freescale Semiconductor
83
FREESCALE [ Freescale ]
