MAX1329BETL+ Maxim Integrated Products, MAX1329BETL+ Datasheet - Page 45

• Manufacturer Part Number: MAX1329BETL+
• Description: IC DAS 12BIT 300KSPS 40-TQFN-EP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1329BETL+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Read Format
A single read from the ADC FIFO register returns the
ADC FIFO data and the 4-bit FIFO address (AFFA<3:0>)
corresponding to the location read.
After clocking out the 16-bit word, the read pointer
increments and continual clock shifts out the 16-bit
word at the location pointed to by the ADC FIFO read
pointer. If trying to read from the ADC FIFO at a location
pointed to by the ADC FIFO write pointer, the FIFO
repeats the last ADC conversion result and correspond-
ing ADC FIFO address equivalent to the ADC FIFO
write pointer. To stop reading, bring CS high after
clocking out the 16th bit of a complete word. The read
Note: Data length can vary from 1 to 16 words, where a word is 16 bits (12 data bits plus 4 address bits).
Table 10. ADC FIFO Depth Bit
Configuration
NAME
DEFAULT
NAME
DEFAULT
AFFD3
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
AFFD2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
AFFDATA11
AFFDATA3
______________________________________________________________________________________
AFFD1 AFFD0
MSB
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
AFFDATA10
AFFDATA2
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
ADC FIFO
DEPTH
WORD
10
11
12
13
14
15
16
FIFO disabled
2
3
4
5
6
7
8
9
AFFDATA9
AFFDATA1
0
0
POINTER
RANGE
WRITE
0-10
0-11
0-12
0-13
0-14
0-15
0-1
0-2
0-3
0-4
0-5
0-6
0-7
0-8
0-9
AFFDATA8
AFFDATA0
0
0
pointer increments after each complete 16-bit word
read. It does not increment if the read is aborted by
bringing CS high before clocking out all 16 bits. Any
read operation on the ADC FIFO register resets the
interrupt flag (AFF).
AFFDATA<11:0>: ADC FIFO Read Data bits (default =
0000 0000 0000). AFFDATA<11:0> returns the data
written by the ADC at the current read pointer location.
AFFA<3:0>: ADC FIFO Read Address bits (default =
0000). AFFA<3:0> returns the address of the current
read pointer location. AFFA<3:0> is never greater than
the AFFD<3:0> programmed value.
Table 11. ADC FIFO Interrupt-Address Bit
Configuration
AFFI3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
AFFDATA7
AFFA3
0
0
AFFI2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
AFFDATA6
AFFI1
AFFA2
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
AFFI0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
AFFDATA5
AFFA1
0
0
INTERRUPT
ADDRESS
ADC FIFO
AFFDATA4
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
AFFA0
LSB
0
0
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