PNX1300EH NXP Semiconductors, PNX1300EH Datasheet - Page 415

• Manufacturer Part Number: PNX1300EH
• Manufacturer: NXP Semiconductors

Specifications of PNX1300EH

• Lead Free Status / RoHS Status: Not Compliant

PNX1300/01/02/11 Data Book
imul
SYNTAX
FUNCTION
DESCRIPTION
full 64-bit product into rdest. The operands are considered signed integers. No overflow or underflow detection is
performed.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is not changed.
EXAMPLES
A-117
r60 = 0x100
r10 = 0, r60 = 0x100, r30 = 0xf11
r20 = 1, r60 = 0x100, r30 = 0xf11
r70 = 0xffffff00, r40 = 0xffffff9c
As shown below, the
The
[ IF rguard ] imul rsrc1 rsrc2 → rdest
if rguard then
rsrc1
temp ← (sign_ext32to64(rsrc1) × sign_ext32to64(rsrc2))
rdest ← temp<31:0>
64-bit result
31
imul
Initial Values
63
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
imul
PRELIMINARY SPECIFICATION
signed
operation computes the product rsrc1×rsrc2 and writes the least-significant 32 bits of the
rdest
31
imul r60 r60 → r80
IF r10 imul r60 r30 → r50
IF r20 imul r60 r30 → r90
imul r70 r40 → r100
0
Operation
signed
signed
×
31
rsrc2
31
0
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r80 ← 0x10000
no change, since guard is false
r90 ← 0xf1100
r100 ← 0x6400
umul imulm umulm dspimul
signed
dspumul dspidualmul
Philips Semiconductors
quadumulmsb fmul
Signed multiply
ATTRIBUTES
SEE ALSO
Result
0
ifmul
2, 3
No
27
—
0
2
3