AD9381/PCB Analog Devices Inc, AD9381/PCB Datasheet - Page 33

• Manufacturer Part Number: AD9381/PCB
• Description: BOARD EVALUATION FOR AD9381
• Manufacturer: Analog Devices Inc

Specifications of AD9381/PCB

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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
upon reading any one of them.
Table 29.
NDF Bit number
0
1
2
3
4
5
6
0x88—Bits[7:0] Active Line Start MSB
See Register 0x86.
0x89—Bits[7:0] Active Line End LSB
Combined with the MSB in Register 0x8A, 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.
0x8A—Bits[7:0] Active Line End MSB
See Register 0x89.
0x8B—Bits[7:0] Active Pixel Start LSB
Combined with the MSB in Register 0x8C, these bits indicate
the first pixel in the display that is active video. All pixels before
this comprise a left vertical bar. If the 2-byte value is 0x00, there
is no left bar.
0x8C—Bits[7:0] Active Pixel Start MSB
See Register 0x8B.
0x8D—Bits[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—Bits[7:0] Active Pixel End MSB
See Register 0x8D.
0x8F—Bits[6:0] NDF
See Register 0x87.
0x90—Bits[7:0] Audio Infoframe Version
Changes Occurred
AVI infoframe
Audio infoframe
SPD infoframe
MPEG source infoframe
ACP packets
ISRC1 packets
ISRC2 packets
Rev. 0 | Page 33 of 44
0x91—Bits[7:4] Audio Coding Type
These bits identify the audio coding so that the receiver may
process audio properly.
Table 30.
CT [3:0]
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x91—Bits[2:0] Audio Channel Count
These bits specify how many audio channels are being sent—
2 channels to 8 channels.
Table 31.
CC [2:0]
000
001
010
011
100
101
110
111
0x92—Bits[4:2] Sampling Frequency
0x92—Bits[1:0] Ample Size
0x93—Bits[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 yields a maximum bit rate of (8 kHz × 8 kHz = 64 kHz).
0x94—Bits[7:0] Speaker Mapping
These bits define the suggested placement of speakers.
Table 32.
Abbreviation
FL
FC
FR
FCL
FCR
RL
RC
RR
RCL
RCR
LFE
Audio Coding
Refer to stream header
IEC60958 PCM
AC-3
MPEG1 (Layer 1 and Layer 2)
MP3 (MPEG1 Layer 3)
MPEG2 (multichannel)
AAC
DTS
ATRAC
Channel Count
Refer to stream header
2
3
4
5
6
7
8
Speaker Placement
Front left
Front center
Front right
Front center left
Front center right
Rear left
Rear center
Rear right
Rear center left
Rear center right
Low frequency effect
AD9381