欢迎访问ic37.com |
会员登录 免费注册
发布采购

AN1063D 参数 Datasheet PDF下载

AN1063D图片预览
型号: AN1063D
PDF下载: 下载PDF文件 查看货源
内容描述: 集成的处理器与DMA USERA ????手册 [Integrated Processor with DMA User’s Manual]
分类和应用:
文件页数/大小: 441 页 / 2488 K
品牌: FREESCALE [ Freescale ]
 浏览型号AN1063D的Datasheet PDF文件第198页浏览型号AN1063D的Datasheet PDF文件第199页浏览型号AN1063D的Datasheet PDF文件第200页浏览型号AN1063D的Datasheet PDF文件第201页浏览型号AN1063D的Datasheet PDF文件第203页浏览型号AN1063D的Datasheet PDF文件第204页浏览型号AN1063D的Datasheet PDF文件第205页浏览型号AN1063D的Datasheet PDF文件第206页  
Freescale Semiconductor, Inc.  
memory access. Off-chip address comparators will not detect breakpoints on internal  
accesses unless show cycles are enabled. Breakpoints on prefetched instructions, which  
are flushed from the pipeline before execution, are not acknowledged, but operand  
breakpoints are always acknowledged. Acknowledged breakpoints can initiate either  
exception processing or BDM. See 5.5.2.6 Hardware Breakpoints for more information.  
5.6.2 Background Debug Mode  
BDM is an alternate CPU32 operating mode. During BDM, normal instruction execution is  
suspended, and special microcode performs debugging functions under external control.  
Figure 5-20 is a BDM block diagram.  
BDM can be initiated in several ways—by externally generated breakpoints, by internal  
peripheral breakpoints, by the background instruction (BGND), or by catastrophic  
exception conditions. While in BDM, the CPU32 ceases to fetch instructions via the  
parallel bus and communicates with the development system via a dedicated, high-speed,  
SPI-type serial command interface.  
SERIAL  
INTERFACE  
IPIPE/DSO  
MICROCODE  
SEQUENCER  
IFETCH/DSI  
IRC  
IRB  
IR  
BKPT/DSCLK  
BERR  
BKPT  
BERR  
BKPT  
BERR  
BKPT  
BUS  
CONTROL  
DATA BUS  
BERR  
.
F... REEZE  
.
EXECUTION  
UNIT  
ADDRESS BUS  
Figure 5-20. BDM Block Diagram  
5.6.2.1 ENABLING BDM. Accidentally entering BDM in a nondevelopment environment  
could lock up the CPU32 since the serial command interface would probably not be  
available. For this reason, BDM is enabled during reset via the BKPT signal.  
MOTOROLA  
MC68340 USER’S MANUAL  
5- 65  
For More Information On This Product,  
Go to: www.freescale.com  
 复制成功!