Datasheet

AD9393
Rev. 0 | Page 27 of 40
0x5B—Bit[3], HDMI Mode
0 = DVI, 1 = HDMI.
0x7B—Bits[7:0], CTS[19:12], 0x7C—Bits[7:0] CTS[11:4],
and 0x7D—Bits[7:4], CTS[3:0]
These bits are the most significant eight bits of a 20-bit word used
with the 20-bit N term in the regeneration of the audio clock.
0x7D—Bits[3:0], N[19:16], 0x7E—Bits[7:0], N[15:8], and
0x7F—Btis[7:0], N[7:0]
These are the most significant four bits of a 20-bit word used
with the 20-bit CTS term to regenerate the audio clock.
0x81—Bits[6:5], Y[1:0]
This register indicates whether data is RGB, 4:4:4, or 4:2:2.
Table 19.
Y Video Data
00 RGB
01 YCrCb 4:2:2
10 YCrCb 4:4:4
0x81—Bit[4], Active Format Information Status
0 = no data. 1 = active format information valid.
0x84—Bits[6:0], Video Identification Code
See the CEA EDID short video descriptors in EIA/CEA-861B.
0x85—Bits[3:0], Pixel Repeat
This value indicates how many times the pixel was repeated,
for example, 0x0 = no repeats, sent once, 0x8 = eight repeats,
sent nine times.
0x86—Bits[7:0], Active Line Start LSB and 0x88—
Bits[7:0] Active Line Start MSB
These bits indicate the beginning line of active video. All
lines before this comprise a top horizontal bar. This is used
in letter box modes. If the 2-byte value is 0x00, there is no
horizontal bar.
0x87—Bits[6:0], New Data Flags (NDF)
This register indicates whether data in specific sections has
changed. In the address space from 0x80 to 0xFF, each register
address ending in 0b111 (for example, 0x87, 0x8F, 0x97, 0xAF)
is an NDF register. They all have the same data and all are reset
when any one of them is read. See Table 20.
Table 20.
NDF Bit Number Changes Occurred
0 AVI infoframe
1 Audio infoframe
2 SPD infoframe
3 MPEG source infoframe
4 ACP packets
5 ISRC1 packets
6 ISRC2 packets
0x89—Bits[7:0], Active Line End LSB and 0x8A—
Bits[7:0], Active Line End MSB
These bits indicate the last line of active video. All lines past
this comprise a lower horizontal bar. This is used in letter-box
modes. If the 2-byte value is greater than the number of lines in
the display, there is no lower horizontal bar.
0x8B—Bits[7:0], Active Pixel Start LSB and 0x8C—
Bits[7:0], Active Pixel Start MSB
These bits indicate the first pixel in the display, which is active
video. All pixels before this comprise a left vertical bar. If the
2-byte value is 0x00, there is no left bar.
0x8D—Bits[7:0], Active Pixel End LSB and 0x8E—
Bits[7:0], Active Pixel End MSB
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.
0x8F—Bits[6:0], New Data Flags
See the 0x87—Bits[6:0], New Data Flags (NDF) section.
0x91—Bits[7:4], Audio Coding Type
These bits identify the audio coding so that the receiver may
process audio properly. See Tabl e 21.
Table 21.
CT[3:0] Audio Coding
0x0 Refer to stream header
0x1 IEC60958 PCM
0x2 AC3
0x3 MPEG1 (Layer 1 and Layer 2)
0x4 MP3 (MPEG1 Layer 3)
0x5 MPEG2 (multichannel)
0x6 AAC
0x7 DTS
0x8 ATRAC
0x91—Bits[2:0], Audio Channel Count
These bits specify how many audio channels (2 channels to
8 channels) are being sent.
Table 22.
CC[2:0] Channel Count
000 Refer to stream header
001 2
010 3
011 4
100 5
101 6
110 7
111 8