MSC8126 Freescale Semiconductor / Motorola, MSC8126 Datasheet - Page 26

• Manufacturer Part Number: MSC8126
• Description: Quad Digital Signal Processor
• Manufacturer: Freescale Semiconductor / Motorola

Electrical Characteristics
2.5.5.2
Table 17 describes the
For designs that use the
values specified for
26
Notes:
No.
20
21
22
Rise-to-rise skew
Fall-to-fall skew
CLKOUT phase high and low (1.2 V, 133 MHz)
1.
2.
3.
4.
A positive number indicates that CLKOUT precedes CLKIN, A negative number indicates that CLKOUT follows CLKIN.
Skews are measured in clock mode 29, with a CLKIN:CLKOUT ratio of 1:1. The same skew is valid for all clock modes.
CLKOUT skews are measured using a load of 10 pF.
CLKOUT skews and phase are not measured for 500/166 Mhz parts because these parts only use CLKIN mode.
CLKIN to CLKOUT Skew
CLKIN
CLKOUT-
CLKOUT
synchronization. Figure 12 shows the relationship between the
MSC8126 Quad Digital Signal Processor Data Sheet, Rev. 13
to-
synchronization mode, use the skew values listed in Table 16 to adjust the rise-to-fall timing
CLKIN
Characteristic
CLKOUT
Figure 12. CLKOUT and CLKIN Signals.
CLKIN
skew timing.
Table 16. CLKOUT Skew
20
Min
–0.8
2.8
0
CLKOUT
1
21
Freescale Semiconductor
and
CLKIN
Max
0.85
1.0
—
1
timings.
Units
ns
ns
ns