Datasheet

Data Sheet AD9102
Rev. 0 | Page 31 of 36
Command/Status Register (PAT_STATUS, Address 0x1E)
Table 25. Bit Descriptions for PAT_STATUS
Bits Bit Name Settings Description Reset Access
[15:3] RESERVED 0x000 RW
3 BUF_READ Read back from updated buffer. 0x0 RW
2 MEM_ACCESS Memory SPI access enable. 0x0 RW
1 PATTERN Status of pattern being played, read only. 0x0 R
0 RUN Allows the pattern generation, and stop pattern after trigger. 0x0 RW
Command/Status Register (PAT_TYPE, Address 0x1F)
Table 26. Bit Descriptions for PAT_TYPE
Bits Bit Name Settings Description Reset Access
[15:1] RESERVED 0x0000 RW
0 PATTERN_RPT
Setting this bit allows the pattern to repeat a number of times defined in
Register 0x002A and Register 0x002B.
0x0 RW
0 Pattern continuously runs.
1
Pattern repeats the number of times defined in Register 0x002A and
Register 0x002B.
Trigger Start to Real Pattern Delay Register (PATTERN_DLY, Address 0x20)
Table 27. Bit Descriptions for PATTERN_DLY
Bits Bit Name Settings Description Reset Access
[15:0] PATTERN_DELAY
Time between when the TRIGGER
pin is low and the pattern starts in number
of DAC clock cycles + 1.
0x000E RW
DAC Digital Offset Register (DACDOF, Address 0x25)
Table 28. Bit Descriptions for DACDOF
Bits Bit Name Settings Description Reset Access
[15:4] DAC_DIG_OFFSET DAC digital offset. 0x0000 RW
[3:0] RESERVED 0x0 RW
Wave Select Register (WAV_CONFIG, Address 0x27)
Table 29. Bit Descriptions for WAV_CONFIG
Bits Bit Name Settings Description Reset Access
[15:10] RESERVED 0x0 RW
[9:8] RESERVED 0x1 RW
[17:6] RESERVED 0x0 RW
[5:4] PRESTORE_SEL 0x0 RW
0 Constant value held into DAC constant value MSB/LSB register.
1 Sawtooth at the frequency defined in the DAC sawtooth configuration register.
2 Pseudorandom sequence.
3 DDS output.
3 RESERVED 0x0 RW
2 CH_ADD 0 Normal operation for the DAC. 0x0 RW
[1:0] WAVE_SEL 0x1 RW
0 Waveform read from RAM between START_ADDR and STOP_ADDR.
1 Prestored waveform.
2 Prestored waveform using START_DELAY and PATTERN_PERIOD.
3 Prestored waveform modulated by waveform from RAM.