參數(shù)資料
型號(hào)： AK2548
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 7 channel E1 Transceiver
中文描述： 7頻道E1收發(fā)器
文件頁(yè)數(shù)： 19/30頁(yè)
文件大?。?/td> 158K
代理商： AK2548
ASAHI K ASEI [AK2548]
C0028-E-00 1999/9
STATUS REGISTER
Symbol
Description
LOSx
(x=1 to 7)
Loss of signal alarm for channel x. Read only register.
When the loss of signal or the loss of MCLK are detected, LOSx goes High.
LOTCx
(x=1 to 7)
Loss of TCLK alarm for channel x. Read only register.
When the loss of TCLKx is detected, LOTCx goes High.
LOMC
Loss of MCLK alarm. Read only register.
When the loss of MCLK is detected, LOMC and LOSx go High.
MASK CONTROL REGISTER
Symbol
Description
MLOSx
(x=1 to 7)
Mask loss of signal alarm for channel x.
MLOSx is active-high to prevent LOSx from setting INT output “high” .
It is possible to read LOSx register regardless of the status of MLOSx.
Initial value is “high”.
Mask loss of TCLK alarm for channel x .
MLOTCx is active-high to prevent LOTCx from setting INT output “high” .
It is possible to read LOTCx register regardless of the status of MLOTCx.
Initial value is “high”.
Mask loss of MCLK alarm.
MLOMC is active-high to prevent LOMC from setting INT output “high” .
It is possible to read LOMC register regardless of the status of MLOMC.
Initial value is “high”.
Note) Please refer to “Loss of MCLK theory of operation”. (P25)
MLOTCx
(x=1 to 7)
MLOMC
CHANNEL CONTROL REGISTER
Symbol
Description
RLOOPx/
LLOOPx
Loopback mode of channel x is activated through the setting of these register
as shown below in Table 1.
POLNx
TIPx/RINGx output polarity is controlled by this register as shown below in
Table 2. Initial value is “high”.
PDx is active-high to set the corresponding transceiver in power down mode.
TTIPx and TRINGx go “l(fā)ow”. LOSx goes “high” in power down mode.
Initial value is “high”.
MSK x is active-high to prevent LOSx or LOTCx from setting INT output
“high”. Initial value is “high”.
RDEN is active-high to prevent RCLK , RPOS, and RNEG output from
forcing to “l(fā)ow” or “high” by the detection of Loss of signal. Initial value is
“l(fā)ow”.
TAOS is active-high to output all one’s signal from TTIPx and TRINGx.
All one’s signal synchronized with TCLK. When TCLK is lost, the signal
synchronized with MCLK.
Application is selected by this register in Table 3. Initial value is low.
PDx
MSKx
RDEN
TAOSx
E Cx
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