ZHCSBF0D August 2013 – February 2018 DAC3151 , DAC3161 , DAC3171
PRODUCTION DATA.
Register Name | Addr (Hex) | Bit | Name | Function | Default Value |
---|---|---|---|---|---|
config0 | 0x00 | 15 | qmc_offset_ena | Enable the offset function when asserted. | 0 |
14 | dual_ena | Utilizes both DACs when asserted. | 0
FUSE controlled |
||
13:12 | chipwidth | Programmable bits for setting the input interface width.
00: all 14 bits are used 01: upper 12 bits are used 10: upper 10 bits are used 11: upper 10 bits are used |
00 | ||
11 | rev | Reverses the input bits. When using the 7bit interface, this reverse each 7-bit input, however when using the 14-bit interface, all 14-bits are reversed as one word. | 0 | ||
10 | twos | When asserted, this bit tells the chip to presume 2’s complement data is arriving at the input. Otherwise offset binary is presumed. | 1 | ||
9 | sif4_ena | When asserted the SIF interface becomes a 4 pin interface. This bit has a lower priority than the dieid_ena bit. | 0 | ||
8 | reserved | reserved | 0 | ||
7 | fifo_ena | When asserted, the FIFO is absorbing the difference between INPUT clock and DAC clock. If it is not asserted then the FIFO buffering is bypassed but the reversing of bits and handling of offset binary input is still available. NOTE: When the FIFO is bypassed, the DACCCLK and DATACLK must be aligned or there may be timing errors; not recommended for actual application use. | 1 | ||
6 | alarm_out_ena | When asserted the pin alarm becomes an output instead of a tri-stated pin. | 1 | ||
5 | alarm_out_pol | This bit changes the polarity of the ALARM signal. (0=negative logic, 1=positive logic) | 1 | ||
4 | alignrx_ena | When asserted the ALIGN pin receiver is powered up. NOTE: It is recommended to clear this bit when ALIGNP/N are not used (dual bus mode, and SYNC ONLY and SIF_SYNC modes in single bus mode). | 1 | ||
3 | lvdssyncrx_ena | When asserted the SYNC pin receiver is powered up. NOTE: It is recommended to clear this bit when SYNCP/N are not used (dual bus mode, and SIF_SYNC mode in single bus mode.) | 1 | ||
2 | lvdsdataclk_ena | When asserted the DATACLK pin receiver is powered up. | 1 | ||
1 | reserved | reserved | 0 | ||
0 | synconly_ena | When asserted, the chip is put into the SYNC ONLY mode where the SYNC pin is used as the sync input for both the front and back of the FIFO. | 0 |