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型號(hào)：	PTM1300AEBEA
廠商：	NXP SEMICONDUCTORS
元件分類：	消費(fèi)家電
英文描述：	Programmable Media Processor
中文描述：	SPECIALTY CONSUMER CIRCUIT, PBGA292
封裝：	PLASTIC, SOT-553-1, BGA-292
文件頁(yè)數(shù)：	343/533頁(yè)
文件大?。?/td>	6857K
代理商：	PTM1300AEBEA

Philips Semiconductors

DSPCPU Operations for TM1300

PRODUCT SPECIFICATION

Sign of floating-point value

[ IF rguard ] fsign rsrc1

(float)rsrc1= 0.0

(float)rsrc1< 0.0

Function unit

Operation code

Number of operands

Modifier range

operation sets the destination register, rdest to either 0, 1, or –1 depending on the sign of the argument

in rsrc1 rdest is set to 0 if rsrc1 is equal to zero, to 1 if rsrc1 is positive, or to –1 if rsrc1 is negative. The argument is

treated as an IEEE single-precision floating-point value; the result is an integer. If the argument is denormalized, zero

is substituted before computing the comparison, and the IFZ flag in the PCSW is set; thus, the result of

denormalized argument is 0. If

causes an IEEE exception, the corresponding exception flags in the PCSW are

set. The PCSW exception flags are sticky: the flags can be set as a side-effect of any floating-point operation but can

only be reset by an explicit

operation. The update of the PCSW exception flags occurs at the same time

as rdest is written. If any other floating-point compute operations update the PCSW at the same time, the net result in

each exception flag is the logical OR of all simultaneous updates ORed with the existing PCSW value for that

exception flag.

operation computes the exception flags that would result from an individual

operation optionally takes a guard, specified in rguard If a guard is present, its LSB controls the

modification of the destination register. If the LSB of rguard is 1, rdest and the exception flags in PCSW are written;

otherwise, rdestis not changed and the operation does not affect the exception flags in PCSW.

Initial Values

r30 = 0x40400000 (3.0)

r40 = 0xbf800000 (-1.0)

r50 = 0x80800000 (-1.175494351e-38)

r60 = 0x80400000 (-5.877471754e-39)

r10 = 0, r70 = 0xffffffff (QNaN)

r20 = 1, r70 = 0xffffffff (QNaN)

r80 = 0xff800000 (-INF)

0xffffffff (-1)

0xffffffff (-1)

0, IFZ flag set

no change, since guard is false

0, INV flag set

0xffffffff (-1)

IF r10 fsign r70

IF r20 fsign r70

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相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
PTM1300EBEA	制造商:NXP Semiconductors 功能描述:
PTM1300FBEA	制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Programmable Media Processor
PTM1404 NC199	制造商:Alpha Wire Company 功能描述:CBL 4COND 14AWG NC 5000=5000'
PTM1404-NC199	制造商:Alpha Wire 功能描述:
PTM1604 NC001	制造商:Alpha Wire Company 功能描述:CBL 4COND 16AWG NC 1000'

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