DAC7760_15 Datasheet, PDF (34/59 Pages) Texas Instruments – Single-Channel, 12- and 16-Bit Programmable Current Output and Voltage Output Digital-to-Analog Converters for 4-mA to 20-mA Current Loop Applications

DAC7760
DAC8760
SBAS528A – JUNE 2013 – REVISED DECEMBER 2013
Reset Register
The DACx760 reset register is written to at address 0x56. Table 12 provides the description.
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DATA BIT(S)
DB15:DB1
DB0
NAME
RESET
Table 12. Reset Register
DEFAULT
0000h
0
DESCRIPTION
Reserved. Writing to these bits does not cause any change.
Software reset bit. Writing 1 to the bit performs a software reset to reset all
registers and the ALARM status to the respective power-on reset default value.
After reset completes the RESET bit clears itself.
Status Register
This read-only register consists of four ALARM status bits (CRC-FLT, WD-FLT, I-FLT, and T-FLT) and bit SR-ON
that shows the slew rate status.
The device continuously monitors the output and die temperature. When an alarm occurs, the corresponding
ALARM status bit is set ('1'). Whenever an ALARM status bit is set, it remains set until the event that caused it is
resolved. The ALARM bit can only be cleared by performing a software reset, or a power-on reset (by cycling
power), or having the error condition resolved. These bits are reasserted if the ALARM condition continues to
exist in the next monitoring cycle.
The ALARM bit goes to '0' when the error condition is resolved.
DATA BIT(S)
DB15:DB5
DB4
DB3
DB2
DB1
DB0
NAME
CRC-FLT
WD-FLT
I-FLT
SR-ON
T-FLT
Table 13. Status Register
DEFAULT
000h
0
0
0
0
0
DESCRIPTION
Reserved. Reading these bits returns 0.
Bit = '1' indicates CRC error on SPI frame.
Bit = '0' indicates normal operation.
Bit = '1' indicates watchdog timer timeout.
Bit = '0' indicates normal operation.
Bit = '1' indicates Open Circuit or Compliance Voltage Violation in IOUT
loading.
Bit = '0' indicates IOUT load is at normal condition.
Bit = '1' when DAC code is slewing as determined by SRCLK and SRSTEP.
Bit = '0' when DAC code is not slewing.
Bit = '1' indicates die temperature is over +142°C.
Bit = '0' indicates die temperature is not over +142°C.
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