参数资料
型号: IP-SDI
厂商: Altera
文件页数: 103/140页
文件大小: 0K
描述: IP VIDEO INTERFACE - SDI
标准包装: 1
系列: *
类型: MegaCore
功能: 视频系统用串行数字接口
许可证: 初始许可证
Chapter 4: SDI Audio IP Cores
SDI Audio Extract MegaCore Function
Register Maps
Table 4–16 and Table 4–17 list the register maps for SDI Audio Extract MegaCore
function.
Table 4–16. SDI Audio Extract MegaCore Function Register Map
4–15
Bytes Offset
00h
01h
02h
03h
04h
05h
06h
07h
08h–09h
10h–3Fh
Name
Audio Control Register
Audio Presence Register
Audio Status Register
Reserved
Error Status Register
Reserved
FIFO Status Register
Clock Status Register
Reserved
Channel Status RAM (0×00), (0×01), ... (0×2F)
Table 4–17. SDI Audio Extract MegaCore Function Register Map (Part 1 of 2)
Bit
Name
Access
Description
Audio Control Register
0
Enable
RW
Enables the audio extraction component and internal AES output.
Defines the audio pair that the component extracts. For example:
3:1
Extract pair
RW
[000] = Extract the first channel pair of audio signal
[111] = Extract the eighth channel pair of audio signal
For 3G-SDI Level A standard, this field extends the extract pair field to
4
Extract pair MSB
RW
allow for future implementations with 32 embedded audio channels.
For 3G-SDI Level B standard, this field selects the active video half of
the 3G multiplex.
5
7:6
Mute
Unused
RW
Drive this register high to mute the audio output.
Reserved for future use.
Audio Presence Register
RO
Reports which audio data groups are detected in the SDI stream.
The following bits correspond to the number of audio groups
detected:
3:0
Data packet present
Bit [0] = Audio group 1
Bit [1] = Audio group 2
Bit [2] = Audio group 3
Bit [3] = Audio group 4
7:4
Control packet present
RO
Reports which audio control packets are detected in the SDI stream.
Audio Status Register
3:0
February 2013
Active channels
Altera Corporation
RW
Reflects the lower four bits of the ACT (active) field of the audio
control packet.
Serial Digital Interface (SDI) MegaCore Function
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