AS3665
Datasheet, Confidential - P r o g r a m m i n g P r o g r a m E x e c u t i o n a n d D e b u g g i n g
Table 56. Exec_Enable Register (Continued) (Continued)
Addr: 00h
Exec_Enable Register
Bit
Bit Name
Default Access
Description
Execution enable for sequencer 3
00
Sequencer 3 is disabled
1
5:4
p3_en
00b
R/W
Reload program counter and enable:
01 set PC3 to start_addr3 , initialize sequencer 3 internal
loop counters then set p3_en =10 (run)
10
11
Execute sequencer commands as defined by
p3_mode
don’t use
1. If all sequencers are switched off ( p1_en =00, p2_en =00 and p3_en =00), LED1_on ... LED9_on control the oper-
ation of the LEDs - see Current Sources on page 15
The Exec_Mode register defines the sequencer executing mode (e.g. single step or run):
Table 57. Exec_Mode Register
Addr: 01h
Exec_Mode Register
Bit
Bit Name
Default Access
Description
Execution mode for sequencer 1 if p1_en =10
00
Hold - finish current instruction and stop.
1:0
p1_mode
00b
R/W
01
Step - execute one instruction at PC1 and increment
PC1 then reset p1_mode (hold)
10
11
00
Run - start execution from PC1
Step in place - execute one instruction at PC1 but
don’t increment PC1 then reset p1_mode (hold)
Execution mode for sequencer 2 if p2_en =10
Hold - finish current instruction and stop.
3:2
p2_mode
00b
R/W
01
Step - execute one instruction at PC2 and increment
PC2 then reset p2_mode (hold)
10
11
00
Run - start execution from PC2
Step in place - execute one instruction at PC2 but
don’t increment PC2 then reset p2_mode (hold)
Execution mode for sequencer 3 if p3_en =10
Hold - finish current instruction and stop.
5:4
p3_mode
00b
R/W
01
Step - execute one instruction at PC3 and increment
PC3 then reset p3_mode (hold)
10
11
Run - start execution from PC3
Step in place - execute one instruction at PC3 but
don’t increment PC3 then reset p3_mode (hold)
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