PNX1301EH NXP Semiconductors, PNX1301EH Datasheet - Page 309

• Manufacturer Part Number: PNX1301EH
• Manufacturer: NXP Semiconductors

Specifications of PNX1301EH

• Lead Free Status / RoHS Status: Not Compliant

PNX1300/01/02/11 Data Book
asri
SYNTAX
FUNCTION
DESCRIPTION
result in rdest that is equal to rsrc1 arithmetically shifted right by n bits. The value of n must be between 0 and 31,
inclusive. The MSB (sign bit) of rsrc1 is replicated as needed to fill vacated bits from the left.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is unchanged.
EXAMPLES
A-11
r30 = 0x7008000f
r30 = 0x7008000f
r10 = 0, r30 = 0x7008000f
r20 = 1, r30 = 0x7008000f
r40 = 0x80030007
r30 = 0x7008000f
r40 = 0x80030007
As shown below, the
The
[ IF rguard ] asri(n) rsrc1 → rdest
if rguard then {
}
rdest<31:31–n> ← rsrc1<31>
rdest<30–n:0> ← rsrc1<31:n>
asri
Initial Values
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
Intermediate result
asri
PRELIMINARY SPECIFICATION
(example: n = 3)
operation takes a single argument in rsrc1 and an immediate modifier n and produces a
rsrc1
rdest
asri(1) r30 → r50
asri(2) r30 → r60
IF r10 asri(4) r30 → r70
IF r20 asri(4) r30 → r80
asri(4) r40 → r90
asri(31) r30 → r100
asri(31) r40 → r110
31
31
S
S
S
S
S
S
S
28
S
S
Arithmetic shift right by immediate amount
Operation
Right shifter
32 bits from rsrc1
0
0
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
asl asli asr lsl lsli lsr
r50 ← 0x38040007
r60 ← 0x1c020003
no change, since guard is false
r80 ← 0x07008000
r90 ← 0xf8003000
r100 ← 0x00000000
r110 ← 0xffffffff
Shift amount n
from operation modifier
Philips Semiconductors
lsri rol roli
ATTRIBUTES
SEE ALSO
Result
shifter
7 bits
0..31
1, 2
10
1
1