Datasheet

AD9880
Rev. 0 | Page 52 of 64
0x8D 7-0 Active Pixel End LSB
Combined with the MSB in Register 0x8E these bits
indicate the last active video pixel in the display. All
pixels past this comprise a right vertical bar. If the
2-byte value is greater than the number of pixels in the
display, there is no vertical bar.
0x8E 7-0 Active Pixel End MSB
See Register 0x8D.
0x8F 6-0 NDF
See Register 0x87.
0x90 7-0 Audio Infoframe Version
0x91 7-4 Audio Coding Type
These bits identify the audio coding so that the
receiver may process audio properly.
Table 88.
CT [3:0] Audio Coding
0x0 Refer to stream header
0x1 IEC60958 PCM
0x2 AC-3
0x3 MPEG1 (Layers 1 and 2)
0x4 MP3 (MPEG1 Layer 3)
0x5 MPEG2 (multichannel)
0x6 AAC
0x7 DTS
0x8 ATRAC
0x91 2-0 Audio Channel Count
These bits specify how many audio channels are being
sent—2 channels to 8 channels.
Table 89.
CC [2:0] Channel Count
000 Refer to stream header
001 2
010 3
011 4
100 5
101 6
110 7
111 8
0x92 4-2 Sampling Frequency
0x92 1-0 Ample Size
0x93 7-0 Max Bit Rate
For compressed audio only when this value is
multiplied by 8 kHz represents the maximum bit rate.
A value of 0x08 in this field would yield a maximum
bit rate of (8 kHz × 8 kHz = 64 kHz).
0x94 7-0 Speaker Mapping
These bits define the mapping (suggested placement)
of speakers.
Table 90.
Abbreviation Speaker Placement
FL Front left
FC Front center
FR Front right
FCL Front center left
FCR Front center right
RL Rear left
RC Rear center
RR Rear right
RCL Rear center left
RCR Rear center right
LFE Low frequency effect