Table 5-9 XCLKOUT Switching Characteristics (PLL Bypassed or Enabled)(1)(2)
| NO. |
PARAMETER |
MIN |
TYP |
MAX |
UNIT |
| C1 |
tc(XCO) |
Cycle time, XCLKOUT |
10 |
|
|
ns |
| C3 |
tf(XCO) |
Fall time, XCLKOUT |
|
2 |
|
ns |
| C4 |
tr(XCO) |
Rise time, XCLKOUT |
|
2 |
|
ns |
| C5 |
tw(XCOL) |
Pulse duration, XCLKOUT low |
H – 2 |
|
H + 2 |
ns |
| C6 |
tw(XCOH) |
Pulse duration, XCLKOUT high |
H – 2 |
|
H + 2 |
ns |
|
tp |
PLL lock time |
|
|
131072tc(OSCCLK)(3) |
cycles |
(1) A load of 40 pF is assumed for these parameters.
(2) H = 0.5tc(XCO)
(3) OSCCLK is either the output of the on-chip oscillator or the output from an external oscillator.
A. The relationship of XCLKIN to XCLKOUT depends on the divide factor chosen. The waveform relationship shown is intended to illustrate the timing parameters only and may differ based on actual configuration.
B. XCLKOUT configured to reflect SYSCLKOUT.
Figure 5-5 Clock Timing