Cirrus Logic CS8422 - Manual (Page 64)

64 DS692F2
CS8422
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).
11.26 IEC61937 PC/PD Burst preamble (2Dh - 30h)
Address Burst Preamble Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
2Dh Burst Preamble PC Byte 0 PC0[7] PC0[6] PC0[5] PC0[4] PC0[3] PC0[2] PC0[1] PC0[0]
2Eh Burst Preamble PC Byte 1 PC1[7] PC1[6] PC1[5] PC0[4] PC1[3] PC1[2] PC1[1] PC1[0]
2Fh Burst Preamble PD Byte 0 PD0[7] PD0[6] PD0[5] PC0[4] PD0[3] PD0[2] PD0[1] PD0[0]
30h Burst Preamble PD Byte 1 PD1[7] PD1[6] PD1[5] PD1[4] PD1[3] PD1[2] PD1[1] PD1[0]