Register table

STHVDAC-253M

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DocID025735 Rev 1

Table 14

is showing a typical set of command sequences, to start up and initialize the

device, control the HVDAC outputs, and then switch off the device. Command sequences

#2,3 & 4 can also be sent at once using an extended mode command sequence.

Table 14. Typical command sequences

CS#

Description

SSC

Command frame

01 0

USID

R/W

Reg adress

[4,0]

P

DATA [7,0]

P BP

1

Write Reg28 - switch to active mode 0 1 0 0 1 1 1 0 1 0 1 1 1 0 0 0 0 1 1 1 1 0 0 0 1 BP

2

Write Reg0 - program DAC C

0 1 0 0 1 1 1 0 1 0 0 0 0 0 0 1

0 000 000 0 1 BP

DAC C value

P BP

0 111 111 1 0 BP

3

Write Reg1 - program DAC B

0 1 0 0 1 1 1 0 1 0 0 0 0 0 1 0

0 000 000 0 1 BP

DAC B value

P BP

0 111 111 1 0 BP

4

Write Reg2 - program DAC C

0 1 0 0 1 1 1 0 1 0 0 0 0 1 0 0

0 000 000 0 1 BP

DAC A value

P BP

0 111 111 1 0 BP

Back to CS#2 to run in loop mode

5

Write Reg28 - switch to shutdown

mode

01 0 0 1 1 1 0 1 0 1 1 1 0 0 0 1 011 100 0 1 BP