AS3665 datasheet(54/78 Pages) AMSCO

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AS3665

Datasheet, Confidential - Prog ramming S equen ce r C o mmands

With the Set PWM to variable command PWM(s) (PWM channels are connected to a sequencer as shown in section

MUX tables - assignments of sequencers to channels on page 49) can be immediately forced to a value of a variable:

With the GoTo Start command the program counter of the sequencer is reset to its start value:

With the Branch command loops can be implemented. Loops can be nested without limits:

With the Branch with variable command loops can be implemented. The number of loops are defined by a variable.

Table 75. Set PWM to variable Command

Set PWM to variable Command

Force PWM

Name

Bits

Bitname

Parameter Description

Set PWM to

variable

Compiler syntax: SPV, variable;

D15:D2

10000100_

011000b

D1:D0

variable

The content of the variable is used to set the PWM value:

0...off

255...full scale

variable ra

variable rb

variable rc

variable rd

Table 76. GoTo Start Command

GoTo Start Command

Name

Bits

Bitname

Parameter Description

GoTo Start

Compiler syntax: GTS;

D15:D0

00000000_

00000000b

(0000h)

Set sequencer program counter to start address

if sequencer 1 then PC1 = start_addr1

if sequencer 2 then PC2 = start_addr2

if sequencer 3 then PC3 = start_addr3

Table 77. Branch Command

Branch Command

Name

Bits

Bitname

Parameter Description

Branch

Compiler syntax: BRN, loop count, step number;

D15:D13

010b

D12:D7

loop count

infinite loops

1-63

1 to 63 loops

D6:D0

step number

0-127

jump to ‘step number’ for ‘loop count’ times;

sets the PC of this sequencer = ‘step number’; in the compiler

‘step number’ can be defined by a label

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