Digital filter for sigma delta modulators (DFSDM) RM0402
386/1163 RM0402 Rev 6
14.8.3 DFSDM filter x interrupt and status register (DFSDM_FLTxISR)
Address offset: 0x108 + 0x80 * x, (x = 0 to 1)
Reset value: 0x00FF 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. Res. Res. SCDF[3:0] Res. Res. Res. Res. CKABF[3:0]
rrrr rrrr
1514131211109876543210
Res. RCIP JCIP Res. Res. Res. Res. Res. Res. Res. Res. AWDF ROVRF JOVRF REOCF JEOCF
rr rrrrr
Bits 31:28 Reserved, must be kept at reset value.
Bits 27:24 SCDF[3:0]: short-circuit detector flag
SDCF[y]=0: No short-circuit detector event occurred on channel y
SDCF[y]=1: The short-circuit detector counter reaches, on channel y, the value programmed in the
DFSDM_CHyAWSCDR registers
This bit is set by hardware. It can be cleared by software using the corresponding CLRSCDF[y] bit in
the DFSDM_FLTxICR register. SCDF[y] is cleared also by hardware when CHEN[y] = 0 (given
channel is disabled).
Note: SCDF[3:0] is present only in DFSDM_FLT0ISR register (filter x=0)
Bits 23:20 Reserved, must be kept at reset value.
Bits 19:16 CKABF[3:0]: Clock absence flag
CKABF[y]=0: Clock signal on channel y is present.
CKABF[y]=1: Clock signal on channel y is not present.
Given y bit is set by hardware when clock absence is detected on channel y. It is held at
CKABF[y]=1 state by hardware when CHEN=0 (see DFSDM_CHyCFGR1 register). It is held at
CKABF[y]=1 state by hardware when the transceiver is not yet synchronized.It can be cleared by
software using the corresponding CLRCKABF[y] bit in the DFSDM_FLTxICR register.
Note: CKABF[3:0] is present only in DFSDM_FLT0ISR register (filter x=0)
Bit 15 Reserved, must be kept at reset value.
Bit 14 RCIP: Regular conversion in progress status
0: No request to convert the regular channel has been issued
1: The conversion of the regular channel is in progress or a request for a regular conversion is
pending
A request to start a regular conversion is ignored when RCIP=1.
Bit 13 JCIP: Injected conversion in progress status
0: No request to convert the injected channel group (neither by software nor by trigger) has been
issued
1: The conversion of the injected channel group is in progress or a request for a injected conversion
is pending, due either to ‘1’ being written to JSWSTART or to a trigger detection
A request to start an injected conversion is ignored when JCIP=1.
Bits 12:5 Reserved, must be kept at reset value.
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