
MPC5200 Data Sheet, Rev. 4
Electrical and Thermal Characteristics
Freescale Semiconductor
14
3.2.4
G2_LE Core PLL Electrical Characteristics
The internal clocking of the G2_LE core is generated from and synchronized to the system clock by means
of a voltage-controlled core PLL.
3.3
AC Electrical Characteristics
Hyperlinks to the indicated timing specification sections are provided below.
AC Test Timing Conditions:
Unless otherwise noted, all test conditions are as follows:
Table 11. G2_LE PLL Specifications
Characteristic
Symbol
Notes
Min
Typical
Max
Unit
SpecID
G2_LE frequency
f
core
1
NOTES:
1
The XLB_CLK frequency and G2_LE PLL Configuration bits must be chosen such that the resulting system
frequencies, CPU (core) frequency, and G2_LE PLL (VCO) frequency do not exceed their respective maximum or
minimum operating frequencies.
2
This represents total input jitter - short term and long term combined - and is guaranteed by design. Two different
types of jitter can exist on the input to core_sysclk, systemic and true random jitter. True random jitter is rejected, but
the PLL. Systemic jitter will be passed into and through the PLL to the internal clock circuitry, directly reducing the
operating frequency.
3
Relock time is guaranteed by design and characterization. PLL-relock time is the maximum amount of time required
for the PLL lock after a stable Vdd and core_sysclk are reached during the power-on reset sequence. This
specification also applies when the PLL has been disabled and subsequently re-enabled during sleep modes.
50
—
550
MHz
O4.1
G2_LE cycle time
t
core
(1)
2.85
—
40.0
ns
O4.2
G2_LE VCO frequency
f
VCOcore
(1)
400
—
1200
MHz
O4.3
G2_LE input clock frequency
f
XLB_CLK
25
—
367
MHz
O4.4
G2_LE input clock cycle time
t
XLB_CLK
2.73
—
50.0
ns
O4.5
G2_LE input clock jitter
t
jitter
2
—
—
150
ps
O4.6
G2_LE PLL relock time
t
lock
3
—
—
100
μ
s
O4.7
AC Operating Frequency Data
USB
Clock AC Specifications
SPI
Resets
MSCAN
I
2
C
External Interrupts
SDRAM
J1850
PCI
PSC
Local Plus Bus
GPIOs and Timers
ATA
IEEE 1149.1 (JTAG) AC Specifications
Ethernet