AD5522JSVD AD [Analog Devices], AD5522JSVD Datasheet - Page 40

• Manufacturer Part Number: AD5522JSVD
• Description: Quad Parametric Measurement Unit With Integrated 16-Bit Level Setting DACs
• Manufacturer: AD [Analog Devices]

AD5522
READBACK OF ALARM STATUS REGISTER
The Alarm Status register is a READ only register that gives information on temperature, clamp and guard alarm events. In the event the
Guard and Clamp alarm functions are not used, (the alarm function may be switched off in the System Control Register). In this case, the
Temperature alarm status is also available in the contents of any of the four PMU readback registers.
Table 26. Alarm Status Readback Register
Bit
23 (MSB)
22
ALARM STATUS READBACK REGISTER SPECIFIC BITS
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3 to 0 (LSB)
READBACK OF DAC REGISTER
The DAC readback function is a 24 bit word, mode, address and DAC data bits.
Table 27. DAC Register Readback
Bit
23 (MSB)
22
DAC READBACK REGISTER SPECIFIC BITS
21 to 16
15 to 0 (LSB)
Bit name
MODE1
MODE0
LTMPALM
TMPALM
LG0
G0
LG1
G1
LG2
G2
LG3
G3
LC0
C0
LC1
C1
LC2
C2
LC3
C3
Unused Readback bits
MODE1
A5, A4, A3, A2, A1
D15 to D0
Bit name
MODE0
TMPALM corresponds to the open drain TMPALM output pin which flags the user of a temperature event
exceeding the default or user programmed level. The temperature alarm is a per device alarm, and latched
( LTMPALM ) and unlatched ( TMPALM ) bits tell a temperature event occurred and if the alarm still exists (if
the junction temperature still exceeds the programmed alarm level). To reset an alarm event, the user
must write to the CLEAR bit in the PMU register.
LGx is the per channel latched Guard Alarm bit and Gx is an unlatched alarm bit. These bits give
information on which channel flagged an alarm on the open drain alarm CGALM pin and if the alarm
condition still exists.
LCx is a per channel latched Clamp alarm bit and Cx is the unlatched alarm bit. These bits give
information on which channel flagged an alarm on the open drain alarm CGALM pin and if the alarm
condition still exists.
Will be loaded with zeros.
Description
1
1
Address Bits indicating the DAC register that is read.
Contents of the addressed DAC register (x1, m or c).
Description
0
0
Rev. PrM | Page 40 of 48
Preliminary Technical Data