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參數(shù)資料
| 型號(hào)： | P60ARM-GP1N |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | Low power, general purpose 32-bit RISC microprocessor |
| 中文描述： | 低功耗，通用32位RISC微處理器 |
| 文件頁(yè)數(shù)： | 59/120頁(yè) |
| 文件大?。?/td> | 1275K |
| 代理商： | P60ARM-GP1N |
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Instruction Set - LDC, STC
55
4.12.2 Addressing modes
ARM60 is responsible for providing the address used by the memory system for the transfer, and the
addressing modes available are a subset of those used in single data transfer instructions. Note, however,
that the immediate offsets are 8 bits wide and specify word offsets for coprocessor data transfers, whereas
they are 12 bits wide and specify byte offsets for single data transfers.
The 8 bit unsigned immediate offset is shifted left 2 bits and either added to (U=1) or subtracted from (U=0)
the base register (Rn); this calculation may be performed either before (P=1) or after (P=0) the base is used
as the transfer address. The modified base value may be overwritten back into the base register (if W=1), or
the old value of the base may be preserved (W=0). Note that post-indexed addressing modes require
explicit setting of the W bit, unlike LDR and STR which always write-back when post-indexed.
The value of the base register, modified by the offset in a pre-indexed instruction, is used as the address for
the transfer of the first word. The second word (if more than one is transferred) will go to or come from an
address one word (4 bytes) higher than the first transfer, and the address will be incremented by one word
for each subsequent transfer.
4.12.3 Address Alignment
The base address should normally be a word aligned quantity. The bottom 2 bits of the address will appear
on
A[1:0]
and might be interpreted by the memory system.
4.12.4 Use of R15
If Rn is R15, the value used will be the address of the instruction plus 8 bytes. Base write-back to R15 shall
not be specified.
4.12.5 Data aborts
If the address is legal but the memory manager generates an abort, the data trap will be taken. The write-
back of the modified base will take place, but all other processor state will be preserved. The coprocessor is
partly responsible for ensuring that the data transfer can be restarted after the cause of the
abort has been
resolved, and must ensure that any subsequent actions it undertakes can be repeated when the instruction
is retried.
The state of the
LATEABT
control signal does not affect the behaviour of LDC and STC instructions in the
event of an
Abort
exception.
4.12.6 Instruction Cycle Times
Coprocessor data transfer instructions take (n-1)S + 2N + bI incremental cycles to execute, where S, N and
I are as defined in section 5.1 Cycle types on page 65.
n
is the number of words transferred.
b
is the number of cycles spent in the coprocessor busy-wait loop.
4.12.7 Assembler syntax
<LDC|STC>{cond}{L} p#,cd,<Address>
相關(guān)PDF資料 |
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| P60ARM-IG | Low power, general purpose 32-bit RISC microprocessor |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P60ARM-IG | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Low power, general purpose 32-bit RISC microprocessor |
| P-60AS/A18 | 功能描述:BATTERY NICAD 2/3A 600MAH W/TAB RoHS:否 類別:電池產(chǎn)品 >> 電池，充電式（蓄電池） 系列:- MSDS 材料安全數(shù)據(jù)表:Nickel Metal Hydride Battery MSDS 標(biāo)準(zhǔn)包裝:1,000 系列:TWICELL 電池化學(xué):鎳金屬氫化物 電池大小:AAA 電壓 - 額定:1.2V 容量:930mAh 尺寸/尺寸:- 端接類型:焊片 放電速率:186mA 標(biāo)準(zhǔn)充電電流:100mA 標(biāo)準(zhǔn)充電時(shí)間:16小時(shí) 重量:0.029 磅（13.15g） 裝運(yùn)信息:- 其它名稱:SY153T |
| P60AS302 | 制造商:APEM 功能描述: |
| P60AS632-8C | 制造商:NYLOK 功能描述: |
| P60AS701 | 功能描述:旋鈕開關(guān) 10POS BCD 0.15A 24V RoHS:否 制造商:C&K Components 位置數(shù)量:5 卡片組數(shù)量: 每卡片組極數(shù):2 電流額定值:250 mA 電壓額定值:125 V 指數(shù)角: 觸點(diǎn)類型: 觸點(diǎn)形式:DPST 端接類型:Solder 安裝類型:Panel 觸點(diǎn)電鍍:Silver |
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