CS8422-DNZR Cirrus Logic Inc, CS8422-DNZR Datasheet - Page 62

• Manufacturer Part Number: CS8422-DNZR
• Description: IC 24-bit 192kHz SRC S/PDIF Receiver
• Manufacturer: Cirrus Logic Inc

62
11.23 Fs/XTI Ratio (17h - 18h)
11.24 Q-Channel Subcode (19h - 22h)
11.25 Channel Status Registers (23h - 2Ch)
ABS SECOND ABS SECOND ABS SECOND ABS SECOND ABS SECOND ABS SECOND ABS SECOND ABS SECOND
Address
ABS MINUTE ABS MINUTE ABS MINUTE ABS MINUTE ABS MINUTE ABS MINUTE ABS MINUTE ABS MINUTE
ABS FRAME
CONTROL
2Ch
FS_XT15
SECOND
2Ah
2Bh
23h
24h
25h
26h
27h
28h
29h
MINUTE
FS_XT7
TRACK
FRAME
INDEX
ZERO
7
7
FS_XTI[15:0] - 256*Fs/XTI, where Fs is the sample rate of incoming AES3-compatible data.
Each byte is LSB first with respect to the 80 Q-subcode bits Q[79:0]. Thus bit 7 of address 19h is Q[0] while
bit 0 of address 19h is Q[7]. Similarly bit 0 of address 22h corresponds to Q[79].
Each byte is MSB first with respect to the 80 Channel Status bits. Thus bit 0 of address 23h, AC0[0], is the
location of the Pro bit. For N = 0-79, Channel Status bit N (per AES specification) is mapped to bit N mod 8
(remainder of N divided by 8) at address 23h+floor(N/8) (23h + integer result of N divided by 8 rounded
down). For example, Channel Status bit 35 is mapped to bit 3 (35/8 = 4 remainder 3) of address 27h (23h
+ 4h).
1 - There has been at least one parity error associated with incoming AES3 data during the input of the
last AES3 data block.
The integer part of FS_XT[15:0] is represented in bits [15:10] in register 17h, and the fractional part is rep-
resented in bits [9:0] of registers 17h and 18h; with a precision of 300 Hz in Fs and is updated approxi-
mately every 2048/(XTI frequency). Reading register 17h will cause the value of 18h to freeze until
register 18h is read.
Channel A Status Byte 0
Channel A Status Byte 1
Channel A Status Byte 2
Channel A Status Byte 3
Channel A Status Byte 4
Channel B Status Byte 0
Channel B Status Byte 1
Channel B Status Byte 2
Channel B Status Byte 3
Channel B Status Byte 4
Channel Status Byte
ABS FRAME
CONTROL
FS_XT14
SECOND
MINUTE
FS_XT6
TRACK
FRAME
INDEX
ZERO
6
6
ABS FRAME
CONTROL
FS_XT13
SECOND
MINUTE
FS_XT5
FRAME
TRACK
INDEX
ZERO
5
5
AC0[7]
AC1[7]
AC2[7]
AC3[7]
AC4[7]
BC0[7]
BC1[7]
BC2[7]
BC3[7]
BC4[7]
Bit 7
ABS FRAME
CONTROL
FS_XT12
SECOND
MINUTE
FS_XT4
FRAME
TRACK
INDEX
ZERO
AC0[6]
AC1[6]
AC2[6]
AC3[6]
AC4[6]
BC0[6]
BC1[6]
BC2[6]
BC3[6]
BC4[6]
4
4
Bit 6
AC0[5]
AC1[5]
AC2[5]
AC3[5]
AC4[5]
BC0[5]
BC1[5]
BC2[5]
BC3[5]
BC4[5]
ABS FRAME
Bit 5
ADDRESS
SECOND
FS_XT11
MINUTE
FS_XT3
FRAME
TRACK
INDEX
ZERO
3
3
AC0[4]
AC1[4]
AC2[4]
AC3[4]
AC4[4]
BC0[4]
BC1[4]
BC2[4]
BC3[4]
BC4[4]
Bit 4
ABS FRAME
ADDRESS
SECOND
FS_XT10
MINUTE
FS_XT2
FRAME
TRACK
INDEX
ZERO
AC0[3]
AC1[3]
AC2[3]
AC3[3]
AC4[3]
BC0[3]
BC1[3]
BC2[3]
BC3[3]
BC4[3]
2
2
Bit 3
ABS FRAME
AC0[2]
AC1[2]
AC2[2]
AC3[2]
AC4[2]
BC0[2]
BC1[2]
BC2[2]
BC3[2]
BC4[2]
ADDRESS
Bit 2
SECOND
MINUTE
FS_XT9
FS_XT1
FRAME
TRACK
INDEX
ZERO
1
1
AC0[1]
AC1[1]
AC2[1]
AC3[1]
AC4[1]
BC0[1]
BC1[1]
BC2[1]
BC3[1]
BC4[1]
Bit 1
ABS FRAME
ADDRESS
CS8422
SECOND
DS692PP1
MINUTE
FS_XT8
FS_XT0
FRAME
TRACK
INDEX
ZERO
AC0[0]
AC1[0]
AC2[0]
AC3[0]
AC4[0]
BC0[0]
BC1[0]
BC2[0]
BC3[0]
BC4[0]
0
0
Bit 0