參數(shù)資料
型號(hào): GS1582
廠商: Gennum Corporation
英文描述: IC,MC14490P
中文描述: 多速率的電纜驅(qū)動(dòng)器,音頻多路復(fù)用器和ClockCleaner⑩串行
文件頁數(shù): 56/114頁
文件大?。?/td> 1224K
代理商: GS1582
GS1582 Data Sheet
40117 - 1 November 2007
56 of 114
group 1 occurs. Similarly, APPLY_WAITB will be asserted starting when
ACS_APPLY is set, and ending when a status boundary for audio group 2 occurs.
Table 4-16
shows the default settings for the Audio Channel Status block. The
GS1582 automatically generates the CRC byte.
4.7.19 Audio Crosspoint
The audio crosspoint allows any single input channel to be embedded as one or
more of the 8 embedded audio channels. The default setting is for one-to-one
mapping, where Ain_1/2 is embedded as Ch1 and Ch2, Ain_3/4 is embedded as
Ch3 and Ch4, and so on.
The same audio channel cannot be used in both group 1 and 2 at the same time.
The GS1582 will assert the XPOINT_ERROR host interface bit if any audio
channel is programmed to be included in both groups.
Table 4-16: Audio Channel Status Block Default Settings
Name
Byte
Bit
Default
Mode
PRO
0
0
1b
Professional use of channel status block
Emphasis
0
2-4
100b
None.
Receiver manual override disabled
Sample
Frequency
0
6-7
01b
48kHz.
Manual override or auto disabled
Channel Mode
1
0-3
0001b
Two channels.
Manual override disabled
AUX
2
0-2
000b
SD Mode:
Maximum audio word length is 20 bits
001b
HD Mode:
Maximum audio word length is 24 bits
Source Word
Length
2
3-5
101b
Maximum word length
(based on AUX setting).
24-bit for HD formats;
20-bit for SD formats
Table 4-17: Audio Channel Status Information Register Settings
Name
Description
Default
ACSR[7-0]
Audio channel status block byte 0 set
85h
ACSR[15-8]
Audio channel status block byte 1 set
08h
ACSR[23-16]
Audio channel status block byte 2 set
28h (SD)
2Ch (HD)
ACSR[31-24]
ACSR[183-176]
Audio channel status block set for bytes 3 to 22
00h
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