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參數(shù)資料
| 型號： | PDSP1601A |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | ALU and Barrel Shifter |
| 中文描述： | ALU和桶式移位器 |
| 文件頁數(shù)： | 6/18頁 |
| 文件大小： | 142K |
| 代理商： | PDSP1601A |
PDSP1601 MC
6
SV3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
SV2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
SV1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
SV0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Shift
No shift
1 place
2 places
3 places
4 places
5 places
6 places
7 places
8 places
9 places
10 places
11 places
12 places
13 places
14 places
15 places
(1)
place the 4 bit value in either of the R1 or R2 registers and
output the value on the SV port (if enabled by
SVOE
).
Priority encode the 16 bit input to the Barrel Shifter and
(2)
Priority Encoder such that the output from the Barrel Shifter is
a normalised value.
Shift the 16 bit input by the amount indicated by the
SV Input
If the SV port is selected as the source of the shift value,
then the input to the Barrel Shifter is shifted by the value stored
in the internal SV register.
SVOE
The SV port acts as an input or an output depending upon
the IS0-3 instruction. If the user does not wish to use the
normalise instructions, then the SV port mat be forced to be
input only by typing
SVOE
control high. In this mode the SV
port may be considered an extension of the instruction inputs.
R1 and R2 Registers
The R1 and R2 registers may be loaded from the Priority
Encoder (NRMR1 and NRMR2) or from the SV input (LR1SV,
LR2SV).
Whilst the latter two instructions are executing, the Barrel
Shifter will pass its input to the output unshifted.
Priority Encoder
If the priority encoder is selected as the source of the shift
value (instructions:- NRMXX, NRMR1, MRMRZ), then within
one 200ns cycle or two 100ns cycles, the shift circuitry will:
Table 3 Barrel shifter codes
R1
MUX
R2
MUX
MUX
4
16
PRIORITY ENCODER
INSTRUCTION
DECODE
4
4
IS0-3
SV
SVOE
Fig.3 Shift control block
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PDSP1601GC1R | ALU and Barrel Shifter |
| PDSP1601MC | ALU and Barrel Shifter |
| PDSP1601MCGGCR | ALU and Barrel Shifter |
| PDSP1601A | ALU and Barrel Shifter(高性能16位算術(shù)邏輯單元（帶一個獨(dú)立片上16位柱形移位器）) |
| PDSP1601 | ALU and Barrel Shifter(高性能16位算術(shù)邏輯單元（帶一個獨(dú)立片上16位柱形移位器）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PDSP1601A/B0/AC | 制造商:Microsemi Corporation 功能描述:20MHZ AUGMENTED ARITH LOGIC UNIT - Bulk 制造商:Zarlink Semiconductor Inc 功能描述:20MHZ AUGMENTED ARITH LOGIC UNIT - Bulk |
| PDSP1601A0/AC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fixed Point ALU |
| PDSP1601A0/LC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Fixed Point ALU |
| PDSP1601AAC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC |
| PDSP1601AB0 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ALU and Barrel Shifter |
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