PNX1302EH NXP Semiconductors, PNX1302EH Datasheet - Page 497

• Manufacturer Part Number: PNX1302EH
• Manufacturer: NXP Semiconductors

Specifications of PNX1302EH

• Lead Free Status / RoHS Status: Not Compliant

PNX1300/01/02/11 Data Book
ume8ii
SYNTAX
FUNCTION
DESCRIPTION
signed 8-bit bytes of rsrc1 and rsrc2; the absolute values of the four differences are summed, and the sum is written to
rdest. All computations are performed without loss of precision.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is not changed.
EXAMPLES
A-199
r80 = 0x0a14f6f6, r30 = 0x1414ecf6
r10 = 0, r80 = 0x0a14f6f6, r30 = 0x1414ecf6
r20 = 1, r90 = 0x64649c9c, r40 = 0x649c649c
r40 = 0x649c649c, r90 = 0x64649c9c
r50 = 0x80808080, r60 = 0x7f7f7f7f
As shown below, the
The
[ IF rguard ] ume8ii rsrc1 rsrc2 → rdest
if rguard then
rsrc1
rdest ← abs_val(sign_ext8to32(rsrc1<31:24>) – sign_ext8to32(rsrc2<31:24>)) +
ume8ii
31
signed
abs_val(sign_ext8to32(rsrc1<23:16>) – sign_ext8to32(rsrc2<23:16>)) +
abs_val(sign_ext8to32(rsrc1<15:8>) – sign_ext8to32(rsrc2<15:8>)) +
abs_val(sign_ext8to32(rsrc1<7:0>) – sign_ext8to32(rsrc2<7:0>))
Initial Values
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
23
signed
PRELIMINARY SPECIFICATION
ume8ii
15
rdest
signed
operation computes four separate differences of the four pairs of corresponding
31
7
signed
ume8ii r80 r30 → r100
IF r10 ume8ii r80 r30 → r70
IF r20 ume8ii r90 r40 → r110
ume8ii r40 r90 → r120
ume8ii r50 r60 → r125
0
unsigned
Operation
rsrc2
Unsigned sum of absolute values
31
signed
| |
−
of signed 8-bit differences
23
signed
0
−
| |
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
r100 ← 0x14
no change, since guard is false
r110 ← 0x190
r120 ← 0x190
r125 ← 0x3fc
+
Philips Semiconductors
15
signed
ATTRIBUTES
| |
−
SEE ALSO
ume8uu
Result
7
signed
| |
−
dspalu
1, 3
No
64
—
0
2
2