PNX1300EH/G,557 NXP Semiconductors, PNX1300EH/G,557 Datasheet - Page 361
PNX1300EH/G,557
Manufacturer Part Number
PNX1300EH/G,557
Description
IC MEDIA PROC 143MHZ 292-HBGA
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1300EHG557.pdf
(549 pages)
Specifications of PNX1300EH/G,557
Applications
Multimedia
Core Processor
TriMedia
Controller Series
Nexperia
Ram Size
48K x 8
Interface
I²C, 2-Wire Serial
Number Of I /o
169
Voltage - Supply
2.375 V ~ 2.625 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
292-HBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Program Memory Type
-
Other names
568-1292
935277716557
PNX1300EH/G
935277716557
PNX1300EH/G
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PNX1300/01/02/11 Data Book
fsubflags
SYNTAX
FUNCTION
DESCRIPTION
rsrc2 and writes a bit vector representing the exception flags into rdest. The argument values are in IEEE single-
precision floating-point format; the result is an integer bit vector. The bit vector stored in rdest has the same format as
the IEEE exception bits in the PCSW. The exception flags in PCSW are left unchanged by this operation. Rounding is
according to the IEEE rounding mode bits in PCSW. If an argument is denormalized, zero is substituted before
computing the difference, and the IFZ bit in the result is set. If the difference would be denormalized, the OFZ bit in the
result is set.
modification of the destination register. If the LSB of rguard is 1, rdest is written; otherwise, rdest is not changed.
EXAMPLES
A-63
r60 = 0xc0400000 (–3.0),
r30 = 0x3f800000 (1.0)
r40 = 0x40400000 (3.0),
r60 = 0xc0400000 (–3.0)
r10 = 0, r40 = 0x40400000 (3.0),
r80 = 0x00800000 (1.17549435e-38)
r20 = 1, r40 = 0x40400000 (3.0),
r80 = 0x00800000 (1.17549435e-38)
r40 = 0x40400000 (3.0),
r81 = 0x00400000 (5.877471754e–39)
r82 = 0x00c00000 (1.763241526e-38),
r83 = 0x0080000 (1.175494351e-38)
r84 = 0x7f800000 (+INF),
r85 = 0x7f800000 (+INF)
r70 = 0x7f7fffff (3.402823466e+38)
r86 = 0xff7fffff (-3.402823466e+38)
r87 = 0xffffffff (QNaN))
r30 = 0x3f800000 (1.0
r87 = 0xffbfffff (SNaN))
r30 = 0x3f800000 (1.0
r83 = 0x0080001 (1.175494421e-38),
r89 = 0x0080000 (1.175494351e-38)
The
The
[ IF rguard ] fsubflags rsrc1 rsrc2
if rguard then
fsubflags
fsubflags
rdest
31
0
Initial Values
ieee_flags((float)rsrc1 – (float)rsrc2)
operation optionally takes a guard, specified in rguard. If a guard is present, its LSB controls the
operation computes the IEEE exceptions that would result from computing the difference r src1–
PRELIMINARY SPECIFICATION
fsubflags r60 r30
fsubflags r40 r60
IF r10 fsubflags r40 r80
IF r20 fsubflags r40 r80
fsubflags r40 r81
fsubflags r82 r83
fsubflags r84 r85
fsubflags r70 r86
fsubflags r87 r30
fsubflags r87 r30
fsubflags r83 r89
IEEE status flags from floating-point subtract
rdest
Operation
7
0
OFZ
r90
r95
r111
r112
r113
r120
r125
r125
r126
6
IFZ
5
r100
r110
INV
4
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
fsub faddflags readpcsw
r90
r95
no change, since guard is false
r110
r111
r112
r113
r120
r125
r125
r126
OVF
3
Philips Semiconductors
0
0
0x2 (INX)
0x20 (IFZ)
0x40 (OFZ)
0x10 (INV)
0xA (OVF,INX)
0x0
0x10 (INV)
0x4 (UNF)
UNF
ATTRIBUTES
2
SEE ALSO
Result
INX
1
DBZ
0
falu
114
1, 4
No
—
2
3
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