- 您現在的位置：買賣IC網 > PDF目錄385939 > TMPR4955 (Toshiba Corporation) 64-bit RISC (Reduced Instruction Set Computer) microprocessor(64位精簡指令集系統計算機微處理器) PDF資料下載
參數資料
| 型號： | TMPR4955 |
| 廠商： | Toshiba Corporation |
| 英文描述： | 64-bit RISC (Reduced Instruction Set Computer) microprocessor(64位精簡指令集系統計算機微處理器) |
| 中文描述： | 64位RISC（精簡指令集計算機）微處理器（64位精簡指令集系統計算機微處理器） |
| 文件頁數： | 19/60頁 |
| 文件大?。?/td> | 244K |
| 代理商： | TMPR4955 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁當前第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁
TOSHIBA
TENTATIVE
TMPR4955/56
20-Oct.-1999
19
write requests when there are no read requests on hold.
When using processor input signals RdRdy* and WrRdy*, the external agent can control the processor
request flow. RdRdy* is the signal that controls the processor read flow, and WrRdy* controls the
processor write request flow. Figure 5-4 illustrates the sequence of the processor request cycle.
Figure 5-4 Processor Requests
5.5.3 Processor read requests
When the processor issues a read request, the external agent must access the specified resource and return
the requested data.
The external agent returns response data for processor read requests so they can be executed separately
from the requests. In other words, the external agent can start an external request before returning
response data for the processor read request. A processor read request is complete when the final word of
the response data is received from the external agent.
Depending on the data identifier combined with the response data, an error in the response data may be
pointed out. The processor would then treat this error as a bus error.
If data have not been returned to the issued processor read request, the applicable request is said to be “on
hold.” This state continues until the requested read data are returned.
The external agent must be able to accept processor read requests at any time if either of the two
following conditions is met.
There is no processor read request that is on hold.
The RdRdy* signal is asserted for 1 cycle 2 cycles before the issue cycle.
1.
Processor issues read/
write requests.
TX4956
External agent
2.
External
acceptance of requests by
asserting either RdRdy* or
WrRdy*.
system
controls
相關PDF資料 |
PDF描述 |
|---|---|
| TMPR4956F | 64-bit RISC (Reduced Instruction Set Computer) microprocessor(64位精簡指令集系統計算機微處理器) |
| TMPZ84C015AF | C-MOS 8-BIT MICROPROCCESSOR |
| TMPZ84C61AP-6 | TLCS-Z80 CGC : Z80 CLOCK GENERATOR/CONTROLLER |
| TMS2716 | 2048-WORD BY 8-BIT ERASABLE PROGRAMMABLE READ-ONLY MEMORIES |
| TMS2716-30 | 2048-WORD BY 8-BIT ERASABLE PROGRAMMABLE READ-ONLY MEMORIES |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TMPR4955A | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:64-Bit TX System RISC TX49 Family |
| TMPR4955AF | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:64-Bit TX System RISC TX49 Family |
| TMPR4955AF-167 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| TMPR4955AF-200 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROPROCESSOR|64-BIT|CMOS|QFP|160PIN|PLASTIC |
| TMPR4955B | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:64-Bit TX System RISC TX49 Family |
發(fā)布緊急采購，3分鐘左右您將得到回復。