ST75C530 datasheet(32/84 Pages) STMICROELECTRONICS

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Complex Read

Opcode:

000

10001

Synopsis

CR allows thereading of a complex parameter.The parameterspecifiestheparameter address(for

the real part : the imaginary part is next location). CR returns the high byte value of both real and

imaginary part of the addressedcomplex parameter(see ChapterVIII “STATUS DESCRIPTION”).

Parameters

Field

Byte

Pos.

Value

Definition

CR_ADDR_L

7..0

Low byte of the 16-bit address

CR_ADDR_H

7..0

High byte of the 16-bit address

CSE

Clear Error Status

CSE

Opcode:

000

01000

Synopsis

CSE is used to clear the ST75C530/540 error status SYSERR byte. It is also used as an

acknowledge to the error condition handler.

Parameters

Field

Byte

Pos.

Value

Definition

ERR_MASK

7..0

Error mask. See report appendix for detailed meaning

DEFT

Define Arbitrary Tone

DEFT

Opcode:

000

01110

Synopsis

DEFT programs one of the four tone generator for arbitrary tone generation.The parameter

is the frequency of the generated tone expressed in Hertz between 0 and 3600Hz.

Parameters

Field

Byte

Pos.

Value

Definition

TONE_GEN_SL

1..0

Index of the tone generator (3..0)

TONE_FREQ_L

7..0

Low byte of the frequency

TONE_FREQ_H

7..0

High byte of the frequency (internally masked with 0F)

TONE_SCALE

7..0

Amplitude scaling factor (high byte)

3F gives the nominal amplitude

DOSR

Define Optional Status Report

DOSR

Opcode:

000

01010

Synopsis

DOSR specifies the address of the RAM variables to be monitored in the 4 locations

STAOPT[0..3] of the dual port RAM. It also specifies the assignment within the 4 locations.

Parameters

Field

Byte

Pos.

Value

Definition

STA_OPT_ASS

1..0

0..3

Index of the STAOPT destination

STA_OPT_ADL

7..0

Low byte of source address

STA_OPT_ADH

3..0

High byte of source address

STA_OPT_HL

Select low byte of source

Select high byte of source

VII - COMMAND SET DESCRIPTION (continued)

ST75C530 - ST75C540

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