參數(shù)資料
型號(hào)： ST40RA150XH6
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 150 MHz, RISC PROCESSOR, PBGA372
封裝： 27 X 27 MM, BGA-372
文件頁(yè)數(shù)： 13/90頁(yè)
文件大?。?/td> 672K
代理商： ST40RA150XH6
20/88
ST40RA166
4 System configuration
4.7.1
Memory bridge control signals
Each memory bridge has seven control signals as defined in
Table 8.
4.7.2
Memory bridge status
The memory bridge control signals are looped back to the ST40RA166 comms subsystem
SYS
_STAT1 register for test purposes. The format of this read-only register is shown in
Section 4.8.4.1: SYSCONF.SYS_STAT1. on page 24.
4.7.3
Changing control of a memory bridge
At reset all these bridges are set to be synchronous. After reset and boot the function of these
memory bridges can be changed. See
Section 4.8.4: SYSCONF registers on page 24. The
procedure for changing the control of a memory bridge is given below.
1
Ensure no initiators are accessing the subsystem the bridge is connected to and ensure the
subsystem cannot initiate any requests to the SuperHyway.
2
Stop the clock to the subsystem.
3
Change the memory bridge configuration using the SYS_CONF.SYS_CONF1 register as detailed
in
Table 8.
4
Restart the clock to the subsystem and reinitialize the system.
Bridge control bit field
Control name
Control function
1:0
MODE
[1:0]
00: Sync (bypass) bridge
01: Semisync with no retime registers
10: Semisync with one retime register
11: Async with two retime registers
4:2
LATENCY
[2:0]
Sets FIFO latency from 0 to 7 cycles.
5
SW
_RESET
0: Software reset inactive
1: Software reset active
6
STROBE
The above control signals are latched in the bridge on the rising
edge of this strobe bit
Table 8: Memory bridge control signals
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST40RA150XHA 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:32-bit Embedded SuperH Device
ST40RA166 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:32-BIT EMBEDDED SUPERH MICROPROCESSOR
ST40RA166XH1 制造商:STMicroelectronics 功能描述:
ST40RA166XH6 制造商:STMicroelectronics 功能描述:32-BIT SUPERH CPU - Trays
ST40RA166XH6/TR 制造商:STMicroelectronics 功能描述:
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