參數(shù)資料
型號(hào)： MT9125AE
廠商： Mitel Networks Corporation
英文描述： CMOS Dual ADPCM Transcoder
中文描述： CMOS雙差分PcM碼器
文件頁(yè)數(shù)： 10/16頁(yè)
文件大?。?/td> 299K
代理商： MT9125AE
MT9125
Preliminary Information
8-26
configuration the ENB1 and ENB2 inputs are
ignored. If F0i is tied continuously to V
SS
, then SSI
operation will be assumed and the transcoder will
use the strobes connected to ENB1 and ENB2 as its
internal reference.
Power-Down Operation (PWRDN)
To minimize power consumption a pin selected,
power-down option is provided. Device power down
is accomplished by forcing the PWRDN pin to V
SS
.
This asynchronous control forces all internal clocking
to halt and the C2o, EN1, EN2, DSTo and ADPCMo
outputs to become tri-stated. Upon returning
PWRDN
to V
DD
coincident with the next alignment
signal, all outputs will return to their active state and
the internal clocks are re-started. In this mode the
ADPCM algorithm is not reset to the 'optional reset
values', however, the self-convergent nature of the
algorithm will ensure that convergence of the
(AD)PCM streams will occur within 3496 frames as
specified by CCITT G.721.
Figure 9 - Pair Gain Application (SSI/SSI)
T
R
T
R
T
R
T
R
D
X
D
R
FS
X
FS
R
BCLK
X
MCLK
X
V
FxL-
V
FRO
V
FxL+
D
X
D
R
FS
X
FS
R
BCLK
X
MCLK
X
V
FxL-
V
FRO
V
FxL+
D
X
D
R
FS
X
FS
R
BCLK
X
MCLK
X
V
FxL-
V
FRO
V
FxL+
D
X
D
R
FS
X
FS
R
BCLK
X
MCLK
X
V
FxL-
V
FRO
V
FxL+
Gate
Array
Ring
Generator
to SLICs
Hookswitch
from SLICs
T
R
L
in
+
L
in
-
L
out
+
L
out
-
BCLK
MCLK
TX
RX
EN1
EN2
MT9125
BCLK
F0i
MCLK
ADPCMi
ADPCMo
ENA
ENS
DSTi
DSTo
ENB1
ENB2
V
DD
MT9125
BCLK
F0i
MCLK
ADPCMi
ADPCMo
ENA
ENS
DSTi
DSTo
ENB1
ENB2
V
DD
S
L
I
C
S
L
I
C
S
L
I
C
S
L
I
C
Removal of the BCLK and MCLK inputs is not
necessary during power-down mode. If the device is
released from power-down without a valid MCLK the
ADPCMo and PCMo outputs will become active,
driving either continuous logic high or logic low, until
a MCLK signal is applied to resume internal
operation.
PWRDN is a schmidt trigger input.
Applications
Various configurations of Pair Gain drops are
depicted in Figures 7, 8 and 9. These show
applications using mixed ST-BUS/SSI, all ST-BUS
and all SSI implementations. Figure10 shows an ST-
BUS line card application for Pair Gain while Figure
11 shows a 2-channel, wireless-set, base station
application based upon ST-BUS.
相關(guān)PDF資料
PDF描述
MT9125AP CMOS Dual ADPCM Transcoder
MT9126AE CMOS Quad ADPCM Transcoder
MT9126AS CMOS Quad ADPCM Transcoder
MT9126 Quad ADPCM Transcoder(四ADPCM編解碼器)
MT9160B ISO2-CMOS 5 Volt Multi-Featured Codec (MFC)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT9125AP 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS Dual ADPCM Transcoder
MT9126 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS Quad ADPCM Transcoder
MT9126AE 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS Quad ADPCM Transcoder
MT9126AE1 制造商:Microsemi Corporation 功能描述:ADPCM VOICE COMPRESSION G.726 16KBPS/24KBPS/32KBPS 5V 28PDIP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TRANSCODER QUAD ADPCM 28PDIP 制造商:Microsemi Corporation 功能描述:IC TRANSCODER QUAD ADPCM 28PDIP
MT9126AS 制造商:Microsemi Corporation 功能描述:
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