Datasheet

AD9880
Rev. 0 | Page 33 of 64
Hex
Address
Read/Write
or Read Only
Bits
Default
Value
Register Name Description
0x90 Read [7:0]
Audio Infoframe
Version
0x91 Read [7:4] Audio Coding Type CT [3:0]. Audio coding type.
0x00 = Refer to stream header.
0x01 = IEC60958 PCM.
0x02 = AC3.
0x03 = MPEG1 (Layers 1 and 2).
0x04 = MP3 (MPEG1 Layer 3).
0x05 = MPEG2 (multichannel).
0x06 = AAC.
0x07 = DTS.
0x08 = ATRAC.
[2:0] Audio Coding Count CC [2:0]. Audio channel count.
000 = refer to stream header.
001 = 2 channels.
010 = 3 channels.
111 = 8 channels
0x92 Read [4:2] Sampling Frequency SF [2:0]. Sampling frequency.
000 = refer to stream header.
001 = 32 kHz.
010 = 44.1 kHz (CD).
011 = 48 kHz.
100 = 88.2 kHz.
101 = 96 kHz.
110 = 176.4 kHz.
111 = 192 kHz.
[1:0] Sample Size SS [1:0]. Sample size.
00 = refer to stream header.
01 = 16 bit.
10 = 20 bit.
11 = 24 bit.
0x93 Read [7:0] Max Bit Rate
Max bit rate (compressed audio only).The value of this field
multiplied by 8 kHz represents the maximum bit rate.
0x94 Read [7:0] Speaker Mapping
CA [7:0]. Speaker mapping or placement for up to 8 channels.
See table 91 in detailed description.
7 Down-Mix DM_INH—down-mix inhibit.
0 = permitted or no information.
1 = prohibited.
0x95 Read [6:3] Level Shift LSV [3:0]—level shift values with attenuation information.
0000 = 0 dB attenuation.
0001 = 1 dB attenuation.
…..
1111 = 15 dB attenuation.
0x96 Read [7:0] Reserved.
0x97 Read [6:0] New Data Flags New data flags (see 0x87).
Source Product Description (SPD) Infoframe
0x98 Read [7:0]
Source Product
Description (SPD)
Infoframe Version
0x99 Read [7:0]
Vender Name
Character 1
Vender name character 1 (VN1) (7-bit ASCII code)—This is the
first character in 8 that is the name of the company that appears
on the product.