ZHCSEA4C May 2015 – December 2020 ADS54J40
PRODUCTION DATA
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
0 | 0 | DECFIL MODE[3] | DECFIL EN | 0 | DECFIL MODE[2:0] | ||
W-0h | W-0h | R/W-0h | R/W-0h | W-0h | R/W-0h |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
7-6 | 0 | W | 0h | Must write 0 |
5 | DECFIL MODE[3] | R/W | 0h | This bit selects the
decimation filter mode. Table 8-47 lists the bit settings. The decimation filter control (DEC MODE EN, register 4Dh, bit 3) and decimation filter enable (DECFIL EN, register 41h, bit 4) must be enabled. |
4 | DECFIL EN | R/W | 0h | This bit enables the digital
decimation filter. 0 = Normal operation, full rate output 1 = Digital decimation enabled |
3 | 0 | W | 0h | Must write 0 |
2-0 | DECFIL MODE[2:0] | R/W | 0h | These bits select the
decimation filter mode. Table 8-47 lists the bit settings. The decimation filter control (DEC MODE EN, register 4Dh, bit 3) and decimation filter enable (DECFIL EN, register 41h, bit 4) must be enabled. |
BITS (5, 2-0) | FILTER MODE | DECIMATION |
---|---|---|
0000 | Band-pass filter centered on 3 × fS / 16 | 4X |
0100 | Band-pass filter centered on 5 × fS / 16 | 4X |
1000 | Band-pass filter centered on 1 × fS / 16 | 4X |
1100 | Band-pass filter centered on 7 × fS / 16 | 4X |
0010 | Low-pass filter | 2X |
0110 | High-pass filter | 2X |
0011 | Low-pass filter with fS /4 mixer | 4X (IQ) |