UPD77115A データシートの表示（PDF） - NEC => Renesas Technology

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UPD77115A

16-BIT FIXED-POINT DIGITAL SIGNAL PROCESSOR

NEC => Renesas Technology 

µPD77115, 77115A

Instruc-

tion

Instruction

Name

Mnemonic

Binomial Less than

operation

ro” = LT (ro, ro’)

Uninom-

inal

operation

Clear

Increment

Decrement

Absolute value

CLR (ro)

ro’ = ro + 1

ro’ = ro − 1

ro’ = ABS (ro)

1’s complement

2’s complement

Clip

ro’ = ~ro

ro’ = −ro

ro’ = CLIP (ro)

Round

ro’ = ROUND (ro)

Exponent

Substitution

Accumulated

addition

Accumulated

subtraction

Division

ro’ = EXP (ro)

ro’ = ro

ro’ + = ro

ro’ − = ro

ro’ / = ro

Instructions Simultaneously Written

Flag

Operation

Imme-

Trino- Bino- Unino- Load/ Trans-

Bran-

Cont-

diate

Loop

OV

mial mial minal store fer

ch

rol

value

if (ro < ro’)

√

•

{ro” ← 0x0000000001}

else {ro” ← 0x0000000000}

ro ← 0x0000000000

√

å

ro’ ← ro + 1

√

√

ro’ ← ro − 1

√

√

if (ro < 0)

√

{ro’ ← −ro}

else {ro’ ← ro}

ro’ ← ~ro

√

√

å

ro’ ← −ro

√

√

if ( ro > 0x007FFFFFFF)

√

{ro’ ← 0x007FFFFFFF}

elseif {ro < 0xFF80000000}

{ro’ ← 0xFF80000000}

else {ro’ ← ro}

å

if (ro > 0x007FFF0000)

√

{ro’ ← 0x007FFF0000}

elseif {ro < 0xFF80000000}

{ro’ ← 0xFF80000000}

else {ro’ ← (ro + 0x8000)

& 0xFFFFFF0000}

ro’ ← log2 ( r1o)

√

ro’ ← ro

√

å

å

å

ro’ ← ro’ + ro

√

√

ro’ ← ro’ − ro

√

√

if (sign (ro’) == sign (ro))

√

√

{ro’ ← (ro’ − ro) << 1}

else

{ro’ ← (ro’ + ro)<<1}

if (sign (ro’)==0)

{ro’ ← ro’ + 1}

Data Sheet U14867EJ5V0DS

29

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