參數(shù)資料
型號(hào)： AM79Q021
廠商： Electronic Theatre Controls, Inc.
英文描述： Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices
中文描述： 四用戶線路音頻處理電路（QSLAC）設(shè)備
文件頁數(shù)： 30/68頁
文件大?。?/td> 1361K
代理商： AM79Q021
30
Am79Q02/021/031 Data Sheet
Figure 11. MPI Real-Time Data Register or GCI Upstream SC Channel Data
1 kHz
UP/DN
GK=0
Six-State
Up/Down
Counter
GK
GK=0
*
a. Loop Detect Debounce Filter
8
D
Q
D
Q
D
Q
RST
D
Q
EN/HOLD
FS
(8 kHz)
CD1
CDA
CK
DSH0
–
DSH3
Debounce Period
(0
–
15 ms)
Q
Debounce Counter
* Transparent latch: Output follows input when EN is high; output holds last state when EN is low
Debounce Counter: Output goes high after counting to programmed (DSH) number of 1 ms clocks;
Counter is reset for CD1 input changes at 125
μ
s sample period.
DSH0
–
DSH3 programmed value is common for all 4 channels, but debounce counter is separate per channel
Notes:
RST
GK0
–
GK3
Ground-Key
Sampling Interval
(1
–
15 ms)
Q
CD2 or CD1B
CDB
MUX
Clock Divider
(1
–
15 ms
clock output)
b. Ground-Key Filter
Programmed value of GK0
–
GK3 determines clock rate (1
–
15 ms) of six-state counter.
If GK value = 0, counter is bypassed and no buffering occurs.
Six-state up/down counter: Counts up when input is high; counts down when input is low.
Output goes and stays high when maximum count is reached;
output goes and stays low when counts down to zero.
Notes:
相關(guān)PDF資料
PDF描述
AM79Q021JC Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices
AM79Q021VC Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices
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AM79Q031 Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices
AM79Q031JC Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM79Q021JC 制造商:Advanced Micro Devices 功能描述: 制造商:Advanced Micro Devices 功能描述:PCM CODEC, Quad, 44 Pin, Plastic, PLCC 制造商:Analog Devices 功能描述:PCM CODEC, Quad, 44 Pin, Plastic, PLCC
AM79Q021JC/T 制造商:Advanced Micro Devices 功能描述:
AM79Q021VC 制造商:Advanced Micro Devices 功能描述:
AM79Q02JC 制造商:Advanced Micro Devices 功能描述:
AM79Q031 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Quad Subscriber Line Audio-Processing Circuit (QSLAC) Devices
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