参数资料
型号: ST40RA200XH6E
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 200 MHz, RISC PROCESSOR, PBGA372
封装: 27 X 27 MM, 2.33 MM HEIGHT, PLASTIC, BGA-372
文件页数: 10/94页
文件大小: 2144K
代理商: ST40RA200XH6E
18/92
ST40RA
B Implementation restrictions
B.7
Interconnect
B.7.1
Memory bridge functionality
Ensure there is no traffic passing though the memory bridge when changing frequency.
Semisynchronous modes of operation are not supported.
B.7.2
Clock selection
The alternate CLOCKGENB clock is not supported for the LMI.
B.7.3
Pad drive control
Programmable drive strength control is not supported for DDR operation.
B.8
GPDMA
B.8.1
Linked list support
Decrementing transfers are not supported as part of link list transfer sequences
B.8.2
2-D transfers
2-D transfers fail if the following conditions are met.
1
Source or destination length is greater than 64 bytes.
2
Real transfer unit is less then 32 bytes.
3
The expression length = n * 64 + tu is true, where:
length is either SLENGTH or DLENGTH,
tu the real transfer unit of the first access of the second line,
n > 0.
B.8.3
Protocol signals
DACK and DRACK protocol signals have limited support.
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