参数资料
型号: MPC855TZQ66D4
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 66 MHz, RISC PROCESSOR, PBGA357
封装: 25 X 25 MM, 1.27 MM PITCH, PLASTIC, BGA-357
文件页数: 26/81页
文件大小: 1618K
代理商: MPC855TZQ66D4
MPC860 PowerQUICC Family Hardware Specifications, Rev. 8
32
Freescale Semiconductor
Bus Signal Timing
Figure 20 provides the timing for the synchronous external master access controlled by the GPCM.
Figure 20. Synchronous External Master Access Timing (GPCM Handled ACS = 00)
Figure 21 provides the timing for the asynchronous external master memory access controlled by the
GPCM.
Figure 21. Asynchronous External Master Memory Access Timing (GPCM Controlled—ACS = 00)
Figure 22 provides the timing for the asynchronous external master control signals negation.
Figure 22. Asynchronous External Master—Control Signals Negation Timing
CLKOUT
TS
A[0:31],
TSIZ[0:1],
R/W, BURST
CSx
B41
B42
B40
B22
CLKOUT
AS
A[0:31],
TSIZ[0:1],
R/W
CSx
B39
B40
B22
AS
CSx, WE[0:3],
OE, GPLx,
BS[0:3]
B43
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