參數(shù)資料
型號: GS9023-CFY
廠商: Electronic Theatre Controls, Inc.
英文描述: Aluminum Electrolytic Radial Leaded Bi-Polar Capacitor; Capacitance: 100uF; Voltage: 63V; Case Size: 12.5x20 mm; Packaging: Bulk
中文描述: 嵌入式音頻編解碼器
文件頁數(shù): 15/33頁
文件大?。?/td> 301K
代理商: GS9023-CFY
GENNUM CORPORATION
522 - 45 - 05
15
G
The audio control packet RATE word bits are defined as
follows:
x[2:0], y[2:0]:
Audio sampling rate for subframe 1 and 2
respectively. Fixed at 48kHz.
async, bsync:
Set LOW when each audio channel pair is
operating synchronously and set HIGH when operating
asynchronously.
Forced
LOW
operation.
due
to
synchronous
ACT:
The ACT word indicates the active group channels.
The audio control packet ACT word structure is shown in
Table 8.
The audio control packet ACT word bits are defined as
follows:
p:
Even parity for bits b0 to b7.
a(4-1): Individual active channel status indicator.
The bits
correspond directly to the
CHACT(4-1)
bits of Host
Interface Register #1h. The bits are set HIGH for each
active channel in a given audio group. The correlation of the
active channels for the four active audio groups is shown in
Table 9.
DELx(0-2):
Indicates the amount of accumulated audio
processing delay relative to video, measured in audio
sample intervals for each of the channels. Positive values
indicate that the video leads the audio. The audio control
packets delay word structure is shown in Table 10.
b6
y1 (fixed to 0)
b5
y0 (LSB, fixed to 0)
b4
bsync
b3
x2 (MSB, fixed to 0)
b2
x1 (fixed to 0)
b1
x0 (LSB, fixed to 0)
b0
async
TABLE 7: Audio Control Packet Rate Word Structure
BIT
RATE WORD
TABLE 8: Audio Control Packet ACT Word Structure
BIT
ACT WORD
b9
not b8
b8
p
b7
reserved (set to 0)
b6
reserved (set to 0)
b5
reserved (set to 0)
b4
reserved (set to 0)
b3
a4
b2
a3
b1
a2
b0
a1
TABLE 9: Audio Control Packet Active Channel Configuration
GROUP1
GROUP2
GROUP3
GROUP4
CHACT 1
Channel 1
Channel 5
Channel 9
Channel 13
CHACT 2
Channel 2
Channel 6
Channel 10
Channel 14
CHACT 3
Channel 3
Channel 7
Channel 11
Channel 15
CHACT 4
Channel 4
Channel 8
Channel 12
Channel 16
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