PNX1302EH NXP Semiconductors, PNX1302EH Datasheet - Page 441

• Manufacturer Part Number: PNX1302EH
• Manufacturer: NXP Semiconductors

Specifications of PNX1302EH

• Lead Free Status / RoHS Status: Not Compliant

PNX1300/01/02/11 Data Book
packbytes
SYNTAX
FUNCTION
DESCRIPTION
rsrc2 into rdest. The byte from rsrc1 is packed into the second-least-significant byte of rdest; the byte from rsrc2 is
packed into the least-significant byte of rdest. The two most-significant bytes of rdest are filled with zeros.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is unchanged.
EXAMPLES
A-143
r30 = 0x12345678, r40 = 0xaabbccdd
r10 = 0, r40 = 0xaabbccdd, r30 = 0x12345678
r20 = 1, r40 = 0xaabbccdd, r30 = 0x12345678
As shown below, the
The
[ IF rguard ] packbytes rsrc1 rsrc2 → rdest
if rguard then {
}
rsrc1
packbytes
31
rdest<7:0> ← rsrc2<7:0>
rdest<15:8> ← rsrc1<7:0>
Initial Values
23
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
PRELIMINARY SPECIFICATION
packbytes
15
rdest
31
0
0
operation packs the two least-significant bytes from the arguments rsrc1 and
0
7
0
0
0
packbytes r30 r40 → r50
IF r10 packbytes r40 r30 → r60
IF r20 packbytes r40 r30 → r70
0
0
23
0
0
0
0
0
0
0
0
0
15
Operation
rsrc2
31
7
Pack least-significant byte
23
0
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
pack16lsb pack16msb
r50 ← 0x000078dd
no change, since guard is false
r70 ← 0x0000dd78
mergelsb mergemsb
Philips Semiconductors
15
ATTRIBUTES
SEE ALSO
Result
7
1, 2, 3, 4, 5
alu
No
52
—
0
2
1