ST STM32F446 Series

SPDIF receiver interface (SPDIFRX) RM0390
924/1328 RM0390 Rev 4
27.5.5 Data input register (SPDIFRX_DR)
Address offset: 0x10
Reset value: 0x0000 0000
This register can take 3 different formats according to DRFMT. Here is the format when
DRFMT = 0b00:
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Res. Res. PT[1:0] C U V PE DR[23:16]
rrrrrrrrrrrrrr
1514131211109876543210
DR[15:0]
rrrrrrrrrrrrrrrr
Bits 31:30 Reserved, must be kept at reset value.
Bits 29:28 PT[1:0]: Preamble Type
These bits indicate the preamble received.
00: not used
01: Preamble B received
10: Preamble M received
11: Preamble W received
Note that if PTMSK = 1, this field is forced to zero
Bit 27 C: Channel Status bit
Contains the received channel status bit, if CUMSK = 0, otherwise it is forced to 0
Bit 26 U: User bit
Contains the received user bit, if CUMSK = 0, otherwise it is forced to 0
Bit 25 V: Validity bit
Contains the received validity bit if VMSK = 0, otherwise it is forced to 0
Bit 24 PE: Parity Error bit
Contains a copy of PERR bit if PMSK = 0, otherwise it is forced to 0
Bits 23:0 DR[23:0]: Data value
Contains the 24 received data bits, aligned on D[23]