ADSP-21020 查看數據表（PDF） - Analog Devices

零件编号

产品描述 (功能)

生产厂家

ADSP-21020

32/40-Bit IEEE Floating-Point DSP Microprocessor

Analog Devices 

Table Vll. Multifunction Compute Operations

Fixed-Point

Rm=R3-0 * R7-4 (SSFR), Ra=R11-8 + R15-12

Rm=R3-0 * R7-4 (SSFR), Ra=R11-8 – R15-12

Rm=R3-0 * R7-4 (SSFR), Ra=(R11-8 + R15-12)/2

MRF=MRF + R3-0 * R7-4 (SSF), Ra=R11-8 + R15-12

MRF=MRF + R3-0 * R7-4 (SSF), Ra=R11-8 – R15-12

MRF=MRF + R3-0 * R7-4 (SSF), Ra=(R11-8 + R15-12)/2

Rm=MRF + R3-0 * R7-4 (SSFR), Ra=R11-8 + R15-12

Rm=MRF + R3-0 * R7-4 (SSFR), Ra=R11-8 – R15-12

Rm=MRF + R3-0 * R7-4 (SSFR), Ra=(R11-8 + R15-12)/2

MRF=MRF – R3-0 * R7-4 (SSF), Ra=R11-8 + R15-12

MRF=MRF – R3-0 * R7-4 (SSF), Ra=R11-8 – R15-12

MRF=MRF – R3-0 * R7-4 (SSF), Ra=(R11-8 + R15-12)/2

Rm=MRF – R3-0 * R7-4 (SSFR), Ra=R11-8 + R15-12

Rm=MRF – R3-0 * R7-4 (SSFR), Ra=R11-8 – R15-12

Rm=MRF – R3-0 * R7-4 (SSFR), Ra=(R11-8 + R15-12)/2

Rm=R3-0 * R7-4 (SSFR), Ra=R11-8 + R15-12,

Rs=R11-8 – R15-12

Floating-Point

Fm=F3-0 * F7-4, Fa=F11-8 + F15-12

Fm=F3-0 * F7-4, Fa=F11-8 – F15-12

Fm=F3-0 * F7-4, Fa=FLOAT R11-8 by R15-12

Fm=F3-0 * F7-4, Fa=FIX R11-8 by R15-12

Fm=F3-0 * F7-4, Fa=(F11-8 + F15-12)/2

Fm=F3-0 * F7-4, Fa=ABS F11-8

Fm=F3-0 * F7-4, Fa=MAX (F11-8, F15-12)

Fm=F3-0 * F7-4, Fa=MIN (F11-8, F15-12)

Fm=F3-0 * F7-4, Fa=F11-8 + F15-12,

Fs=F11-8 – F15-12

Ra, Rm

R3-0

R7-4

R11-8

R15-12

Fa, Fm

F3-0

F7-4

F11-8

F15-12

(SSF)

(SSFR)

Any register file location (fixed-point)

R3, R2, R1, R0

R7, R6, R5, R4

R11, R10, R9, R8

R15, R14, R13, R12

Any register file location (floating-point)

F3, F2, F1, F0

F7, F6, F5, F4

F11, F10, F9, F8

F15, F14, F13, F12

X-input signed, Y-input signed, fractional inputs

X-input signed, Y-input signed, fractional inputs, rounded output

ADSP-21020

Table VIII. Interrupt Vector Addresses and Priorities

Vector

Address

No. (Hex)

Function

0

1*

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19–23

24–31

0x00

0x08

0xl0

0xl8

0x20

0x28

0x30

0x38

0x40

0x48

0x50

0x58

0x60

0x68

0x70

0x78

0x80

0x88

0x90

0x98-0xB8

0xC0–OxF8

Reserved

Reset

Reserved

Status stack or loop stack overflow or

PC stack full

Timer=0 (high priority option)

IRQ3 asserted

IRQ2 asserted

IRQ1 asserted

IRQ0 asserted

Reserved

Reserved

DAG 1 circular buffer 7 overflow

DAG 2 circular buffer 15 overflow

Reserved

Timer=0 (low priority option)

Fixed-point overflow

Floating-point overflow

Floating-point underflow

Floating-point invalid operation

Reserved

User software interrupts

*Nonmaskable

REV. C

–11–

Share Link: