DAC34H84_15 Datasheet, PDF (71/96 Pages) Texas Instruments – DAC34H84 Quad-Channel, 16-Bit, 1.25 GSPS Digital-to-Analog Converter (DAC)

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Register
Name
config27
Address
0x1B
DAC34H84
SLAS751D – MARCH 2011 – REVISED SEPTEMBER 2015
Table 39. Register Name: config27 – Address: 0x1B, Default: 0x0000
Bit
Name
15 extref_ena
14 Reserved
13 Reserved
12 Reserved
11 fuse_sleep
10 Reserved
9
Reserved
8
Reserved
7
Reserved
6
Reserved
5:0 atest
Function
Allows the device to use an external reference or the internal reference.
0: Internal reference
1: External reference
Reserved for factory use.
Reserved for factory use.
Reserved for factory use.
Put the fuses to sleep when set high.
Note: Default value is 0b. Must be set to 1b for proper operation
Reserved for factory use.
Reserved for factory use.
Reserved for factory use.
Reserved for factory use.
Reserved for factory use.
ATEST mode allows the user to check for the internal die voltages to ensure the
supply voltages are within the range. When ATEST mode is programmed, the
internal die voltages can be measured at the TXENA pin. The TXENA pin (N9) must
be floating without any pull-up or pull-down resistors.
In ATEST mode, the TXENA 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
1.2 V
010000
DACA AVDD
3.3 V
010110
DACB AVSS
0V
010111
DACB DVDD
1.2 V
011000
DACB AVDD
3.3 V
011110
DACC AVSS
0V
011111
DACC DVDD
1.2 V
100000
DACC AVDD
3.3 V
100110
DACD AVSS
0V
100111
DACD DVDD
1.2 V
101000
DACD AVDD
3.3 V
110000
1.2VDIG
1.2 V
000101
1.2VCLK
1.2 V
Default
Value
0
0
0
0
0
0
0
0
0
0
000000
Register
Name
config28
Address
0x1C
Table 40. Register Name: config28 – Address: 0x1C, Default: 0x0000
Bit
Name
15:8 Reserved
7:0 Reserved
Reserved for factory use.
Reserved for factory use.
Function
Default
Value
0x00
0x00
Register
Name
config29
Address
0x1D
Table 41. Register Name: config29 – Address: 0x1D, Default: 0x0000
Bit
Name
15:8 Reserved
7:0 Reserved
Reserved for factory use.
Reserved for factory use.
Function
Default
Value
0x00
0x00
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