MPC8323ECVRADDC datasheet(62/80 Pages) FREESCALE

Part #	MPC8323ECVRADDC

Description	PowerQUICC??II Pro Integrated Communications Processor Family Hardware Specifications

PDF	80 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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MPC8323E PowerQUICC™ II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 0

Freescale Semiconductor

Clocking

22 Clocking

Figure 43 shows the internal distribution of clocks within the MPC8323E.

Figure 43. MPC8323E Clock Subsystem

The primary clock source for the MPC8323E can be one of two inputs, CLKIN or PCI_CLK, depending

on whether the device is configured in PCI host or PCI agent mode, respectively.

22.1

Clocking in PCI Host Mode

When the MPC8323E is configured as a PCI host device (RCWH[PCIHOST] = 1), CLKIN is its primary

input clock. CLKIN feeds the PCI clock divider (

÷2) and the PCI_SYNC_OUT and PCI_CLK_OUT

Core PLL

System

LBC

LCLK[0:1]

core_clk

e300c2 core

csb_clk to Rest

CLKIN

csb_clk

MPC8323E

Local Bus

PCI_CLK_OUT[0:2]

PCI_SYNC_OUT

PCI_CLK/

Clock

Unit

of the Device

lb_clk

PCI Clock

PCI_SYNC_IN

Memory

Device

To Local Bus

Clock

Divider (

÷2)

MEMC1_MCK

DDR

ddr_clk

DDR

Memory

Device

PLL

QUICC

PLL

ce_clk to

To DDR

Memory

Controller

Clock

CFG_CLKIN_DIV

Divider

Engine

QUICC Engine

Block

MPC8323ECVRADDC Datasheet(PDF) 62 Page - Freescale Semiconductor, Inc

MPC8323ECVRADDC Datasheet(HTML) 62 Page - Freescale Semiconductor, Inc

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