MPC5200B(2006) 查看數據表（PDF） - Freescale Semiconductor

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MPC5200B
(Rev.:2006)

SDRAM/DDR Memory Controller

Freescale Semiconductor 

Electrical and Thermal Characteristics

3.2.4 e300 Core PLL Electrical Characteristics

The internal clocking of the e300 core is generated from and synchronized to the system clock by means

of a voltage-controlled core PLL.

Table 11. e300 PLL Specifications

Characteristic

Sym

Notes Min Typical Max

Unit SpecID

e300 frequency

e300 cycle time

e300 VCO frequency

fcore

(1)

50

—

550

MHz

O4.1

tcore

(1)

2.85

—

40.0

ns

O4.2

fVCOcore

(1)

400

—

1200

MHz

O4.3

e300 input clock frequency

fXLB_CLK

25

—

367

MHz

O4.4

e300 input clock cycle time

e300 input clock jitter

e300 PLL relock time

tXLB_CLK

2.73

—

50.0

tjitter

(2)

—

—

150

tlock

(3)

—

—

100

ns

O4.5

ps

O4.6

µs

O4.7

NOTES:

1 The XLB_CLK frequency and e300 PLL Configuration bits must be chosen such that the resulting system

frequencies, CPU (core) frequency, and e300 PLL (VCO) frequency do not exceed their respective maximum or

minimum operating frequencies in Table 12.

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. Systemic jitter will be passed into and through the PLL to the internal clock circuitry.

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.

3.3 AC Electrical Characteristics

Hyperlinks to the indicated timing specification sections are provided below.

• AC Operating Frequency Data

• Clock AC Specifications

• Resets

• External Interrupts

• SDRAM

• PCI

• Local Plus Bus

• ATA

• Ethernet

• USB

• SPI

• MSCAN

• I2C

• J1850

• PSC

• GPIOs and Timers

• IEEE 1149.1 (JTAG) AC Specifications

MPC5200B Data Sheet, Rev. 1

14

Freescale Semiconductor

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