PNX1300 Philips, PNX1300 Datasheet - Page 449
PNX1300
Manufacturer Part Number
PNX1300
Description
Media Processors
Manufacturer
Philips
Datasheet
1.PNX1300.pdf
(548 pages)
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PNX1300/01/02/11 Data Book
quadumin
SYNTAX
FUNCTION
DESCRIPTION
rsrc1 and rsrc2. All bytes are considered unsigned. The
median computation on packed pixel data structures:
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is not changed.
EXAMPLES
A-151
r30 = 0x0201000e, r40 = 0xff00ff02
r10 = 0, r60 = 0x9c9c6464, r70 = 0x649d649c
r20 = 1, r60 = 0x9c9c6464, r70 = 0x649d649c
The
MEDIAN_Q(a,b,c) (QUADUMIN(QUADUMAX( QUADUMIN((a),(b)), (c)), QUADUMAX((a),(b))))
The
[ IF rguard ] quadumin rsrc1 rsrc2
if rguard then {
}
rdest<7:0>
rdest<15:8>
rdest<23:16>
rdest<31:24>
quadumin
quadumin
Initial Values
if rsrc1<7:0> < rsrc2<7:0> then rsrc1<7:0> else rsrc2<7:0>
if rsrc1<15:8> < rsrc2<15:8> then rsrc1<15:8> else rsrc2<15:8>
if rsrc1<23:16> < rsrc2<23:16> then rsrc1<23:16> else rsrc2<23:16>
if rsrc1<31:24> < rsrc2<31:24> then rsrc1<31:24> else rsrc2<31:24>
operation computes four separate minimum values of the four pairs of corresponding 8-bit bytes of
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
PRELIMINARY SPECIFICATION
quadumin r30 r40
IF r10 quadumin r60 r70
IF r20 quadumin r60 r70
rdest
quadumin
Operation
Unsigned bytewise quad minimum
r50
operation is particularly suited to implement
r80
r90
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
imin imax quadumax
r50
no change, since guard is false
r90
Philips Semiconductors
ATTRIBUTES
0x02000002
0x649c6464
SEE ALSO
Result
dspalu
No
1,3
80
—
2
2
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