PNX1311EH/G NXP Semiconductors, PNX1311EH/G Datasheet - Page 447
PNX1311EH/G
Manufacturer Part Number
PNX1311EH/G
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1311EHG.pdf
(548 pages)
Specifications of PNX1311EH/G
Lead Free Status / RoHS Status
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PNX1300/01/02/11 Data Book
quadavg
SYNTAX
FUNCTION
DESCRIPTION
bytes of rsrc1 and rsrc2. All bytes are considered unsigned. The least-significant 8 bits of each average is written to
the corresponding byte in rdest. 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-149
r30 = 0x0201000e, r40 = 0xffffff02
r10 = 0, r60 = 0x9c9c6464, r70 = 0x649c649c
r20 = 1, r60 = 0x9c9c6464, r70 = 0x649c649c
As shown below, the
The
[ IF rguard ] quadavg rsrc1 rsrc2 → rdest
if rguard then {
}
rsrc1
temp ← (zero_ext8to32(rsrc1<7:0>) + zero_ext8to32(rsrc2<7:0>) + 1) / 2
rdest<7:0> ← temp<7:0>
temp ← (zero_ext8to32(rsrc1<15:8>) + zero_ext8to32(rsrc2<15:8>) + 1) / 2
rdest<15:8> ← temp<7:0>
temp ← (zero_ext8to32(rsrc1<23:16>) + zero_ext8to32(rsrc2<23:16>) + 1) / 2
rdest<23:16> ← temp<7:0>
temp ← (zero_ext8to32(rsrc1<31:24>) + zero_ext8to32(rsrc2<31:24>) + 1) / 2
rdest<31:24> ← temp<7:0>
quadavg
31
unsigned
Four full-precision
Initial Values
23
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
9-bit sums
unsigned
quadavg
PRELIMINARY SPECIFICATION
15
8
unsigned
unsigned
rdest
operation computes four separate averages of the four pairs of corresponding 8-bit
31
unsigned
7
0
unsigned
quadavg r30 r40 → r50
IF r10 quadavg r60 r70 → r80
IF r20 quadavg r60 r70 → r90
8
unsigned
23
unsigned
0
0
15
Operation
8
unsigned
rsrc2
Unsigned byte-wise quad average
unsigned
31
unsigned
+
7
0
unsigned
1
8
23
unsigned
unsigned
0
+
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
iavgonep dspuquadaddui
1
r50 ← 0x81808008
no change, since guard is false
r90 ← 0x809c6480
0
Philips Semiconductors
15
unsigned
ATTRIBUTES
+
SEE ALSO
ifir8ii
1
Result
7
unsigned
+
dspalu
1, 3
1
No
73
—
0
2
2
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