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MPC8260

更新时间： 2024-12-01 04:58:47

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		/
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UPM Timing Diagram

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数据手册

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MPC8260 数据手册

Document Number: AN2179

Rev. 2, 07/2006

Freescale Semiconductor

Application Note

MPC8260 UPM Timing Diagram

Contents

The three user-programmable machine (UPMs) of the

MPC8260 PowerQUICC™ II integrated communications

processor are flexible interfaces that connect to a wide range

of memory devices. At the heart of each UPM is an

internal-memory RAM array that specifies the logical value

driven on the external memory controller pins for a given

clock cycle.

UPM Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

UPM Timings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

UPM ARTRY Cycle . . . . . . . . . . . . . . . . . . . . . . . . . .12

UPM Read-Modify-Write Cycle . . . . . . . . . . . . . . . . .14

This application note presents a series of timing diagrams for

several UPM usage scenarios. All the timing diagrams are

based on simulations and are for the 60x bus. Timing for the

local bus is basically the same as for the 60x bus, except that

there are no PSDVAL and TA signals to indicate the

termination of the memory cycle. Also, the local bus has its

own signals:

•

Local address bus

Local data bus

LBS

LGPLx

Local address pins are multiplexed with PCI signals. To

select the local bus function of these pins, configure the

HRCW[L2CPC] bits to 00 during configuration or program

them to 00 after configuration. Because of the similarity of

the timing for the 60x and local buses, refer to the 60x bus

timing diagrams for local bus timings.

12 3 4 5 6 7...16

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与MPC8260相关器件

型号	品牌	获取价格	描述	数据表
MPC8260A	FREESCALE	获取价格	PowerQUICC⑩ II Integrated Communications Proc
MPC8260ACVR	MOTOROLA	获取价格	MPC826xA (HiP4) Family Hardware Specifications
MPC8260ACVRPIBX	NXP	获取价格	32-BIT, 300MHz, RISC PROCESSOR, PBGA516, PLASTIC, BGA-516
MPC8260ACVVMHBB	NXP	获取价格	PQ II HIP4 NO-PB REV B
MPC8260ACVVMIBB	NXP	获取价格	PQ II HIP4 NO-PB REV B
MPC8260ACZU	MOTOROLA	获取价格	MPC826xA (HiP4) Family Hardware Specifications
MPC8260ACZUKHBA	MOTOROLA	获取价格	暂无描述
MPC8260ACZUMHBB	MOTOROLA	获取价格	32-BIT, 266 MHz, RISC PROCESSOR, PBGA480, 37.50 X 37.50 MM, TBGA-480
MPC8260ACZUMHBB	NXP	获取价格	POWERQUICC II HIP4 REV B
MPC8260ACZUMIB	MOTOROLA	获取价格	RISC Microprocessor, 32-Bit, 300MHz, CMOS, PBGA480,