Motorola DSP56012 ユーザーズマニュアル

Host Command

$17—DEFAULT

WRITE CVR WITH DESIRED HV.

HC

HOST COMMAND

SET HC = 1.

 HCP IS SET UNTIL INTERRUPT IS ACKNOWLEDGED.

HOST COMMAND IS MASKED UNTIL HCIE = 1.

 WHEN THE HOST COMMAND interrupt IS ACKNOWLEDGED, THE HC

BIT IS CLEARED BY THE HOST COMMAND LOGIC. HC CAN BE READ AS

A STATUS BIT.

HCP

HOST COMMAND PENDING

interrupt VECTOR TABLE

HCIE

HOST COMMAND INTERRUPT ENABLE

P:$007E

AVAILABLE FOR HOST COMMAND

FAST INTERRUPT

OR

LONG INTERRUPT

$1

COMMAND VECTOR 

REGISTER (CVR)

HC—HOST COMMAND (STATUS)

P:$0000

HOST COMMAND DEFAULT VECTOR

P:$0034

AVAILABLE FOR HOST COMMAND

AVAILABLE FOR HOST COMMAND

interrupt VECTOR

ADDRESS = HV x 2

$1

COMMAND 

VECTOR 

REGISTER (CVR)

1

HOST VECTOR (HV)

70

0

5

X:$FFE8

HOST CONTROL

REGISTER (HCR)

0

HF3

HF2

HTIE

HRIE

70

0

0

6

5

432

1

1

X:$FFE9

HOST STATUS

REGISTER (HSR)

DMA

HF1

HF0

HTDE

HRDF

70

0

0

6

5

432

1

1

AA0336

0

HOST VECTOR (HV)

70

0

5

Note: When using the SAI and DAX 

peripherals, do not use interrupt vector 

addresses P:$0040–$004A, $0050, 

$0052, and $0056.