
ASAHI KASEI
[AK4589]
MS0339-E-00
2004/09
-
42
-
Addr
Register
Name
D7 D6 D5 D4 D3 D2 D1 D0
09H ATT
speed
& Power Down Control
0 PD4
ATS1
ATS0
PD3 PD2 PD1
RSTN1
Default
0 0 0 0 0 0 0 1
RSTN1:
Internal
timing
reset
0: Reset. DZF1-2 pins go to “H”, but registers are not initialized.
1: Normal operation
ATS1-0: Digital attenuator transition time setting (see Table 16)
Initial:
“00”,
mode
0
PD1-0: Power-down control (0: Power-up, 1: Power-down)
PD1: Power down control of DAC1
PD2: Power down control of DAC2
PD3: Power down control of DAC3
PD4: Power down control of DAC4
Addr
Register
Name
D7 D6 D5 D4 D3 D2 D1 D0
0AH Zero
detect
OVFE DZFM3
DZFM2
DZFM1
DZFM0
PWVRN PWADN PWDAN
Default
0 0 1 1 1 1 1 1
PWDAN:
Power-down
control
of
DAC1-4
0:
Power-down
1:
Normal
operation
PWADN:
Power-down
control
of
ADC
0:
Power-down
1:
Normal
operation
PWVRN:
Power-down
control
of
reference
voltage
0:
Power-down
1:
Normal
operation
DZFM3-0:
Zero
detect
mode
select
(see
Table
13)
Initial:
“0111”,
disable
OVFE: Overflow detection enable
0: Disable, pin#33 becomes DZF2 pin.
1:
Enable,
pin#33
becomes
OVF
pin.