Datasheet
DAC3484
www.ti.com
SLAS749C –MARCH 2011–REVISED AUGUST 2012
Register name: config27 – Address: 0x1B, Default: 0x0000
Register
Default
Address Bit Name Function
Value
Name
config27 0x1B 15 extref_ena Allows the device to use an external reference or the internal reference. 0
MM 0: Internal reference
MM 1: External reference
14 Reserved Reserved for factory use. 0
13 Reserved Reserved for factory use. 0
12 Reserved Reserved for factory use. 0
11 fuse_sleep Put the fuses to sleep when set high. 0
Note: Default value is ‘0’. Must be set to ‘1’ for proper operation
10 Reserved Reserved for factory use. 0
9 Reserved Reserved for factory use. 0
8 Reserved Reserved for factory use. 0
7 Reserved Reserved for factory use. 0
6 Reserved Reserved for factory use. 0
5:0 atest ATEST mode allows the user to check for the internal die voltages to ensure the 000000
supply voltages are within the range. When ATEST mode is programmed, the
internal die voltages can be measured at the TXENABLE pin. The TXENABLE pin
(A32) must be floating without any pull-up or pull-down resistors.
In ATEST mode, the TXENABLE and sif_txenable logics are bypassed, and
output will be active at all time.
Config27, bit<5:0> Description Expected Nominal
Voltage
001110 DACA AVSS 0V
001111 DACA DVDD 1.2V
010000 DACA AVDD 3.3V
010110 DACB AVSS 0V
010111 DACB DVDD 1.2V
011000 DACB AVDD 3.3V
011110 DACC AVSS 0V
011111 DACC DVDD 1.2V
100000 DACC AVDD 3.3V
100110 DACD AVSS 0V
100111 DACD DVDD 1.2V
101000 DACD AVDD 3.3V
110000 1.2VDIG 1.2V
000101 1.2VCLK 1.2V
Register name: config28 – Address: 0x1C, Default: 0x0000
Register
Default
Address Bit Name Function
Value
Name
config28 0x1C 15:8 Reserved Reserved for factory use. 0x00
7:0 Reserved Reserved for factory use. 0x00
Register name: config29 – Address: 0x1D, Default: 0x0000
Register
Default
Address Bit Name Function
Value
Name
config29 0x1D 15:8 Reserved Reserved for factory use. 0x00
7:0 Reserved Reserved for factory use. 0x00
Copyright © 2011–2012, Texas Instruments Incorporated Submit Documentation Feedback 41
Product Folder Links: DAC3484