PNX1302EH NXP Semiconductors, PNX1302EH Datasheet - Page 421

• Manufacturer Part Number: PNX1302EH
• Manufacturer: NXP Semiconductors

Specifications of PNX1302EH

• Lead Free Status / RoHS Status: Not Compliant

PNX1300/01/02/11 Data Book
isub
SYNTAX
FUNCTION
DESCRIPTION
either both signed or unsigned 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-123
r30 = 3, r40 = 4
r10 = 0, r60 = 0x100, r30 = 3
r20 = 1, r50 = 0x1000, r60 = 0x100
r70 = 0x80000000, r40 = 4
The
The
[ IF rguard ] isub rsrc1 rsrc2 → rdest
if rguard then
rdest ← rsrc1 – rsrc2
isub
isub
Initial Values
operation computes the difference rsrc1–rsrc2 and writes the result into rdest. The operands can be
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
PRELIMINARY SPECIFICATION
isub r30 r40 → r80
IF r10 isub r60 r30 → r50
IF r20 isub r50 r60 → r90
isub r70 r40 → r100
Operation
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r80 ← 0xffffffff
no change, since guard is false
r90 ← 0xf00
r100 ← 0x7ffffffc
isubi borrow dspisub
Philips Semiconductors
dspidualsub fsub
ATTRIBUTES
SEE ALSO
Result
Subtract
1, 2, 3, 4, 5
alu
No
13
—
2
1