參數(shù)資料
型號(hào)： MA28140
廠商： Dynex Semiconductor Ltd.
英文描述： Packet Telecommand Decoder
中文描述： 包遙控解碼器
文件頁(yè)數(shù)： 31/72頁(yè)
文件大?。?/td> 857K
代理商： MA28140
MA28140
31/72
CPDU Status Report Interface in 5 Samples Mode
The 16 bit Command Pulse Distribution Unit Status report
can be retrieved through this interface. It is possible for an
application to use either a serial or a parallel interface to read
out this status report. The serial or parallel mode is selected
with the PAR configuration pin of the PTD (see section 5.4).
The serial interface in 5 samples mode uses 3 signal lines:
CPDUS: status sample input.
TMC: status clock input, is also used for FAR and AUS.
TMD: status data output, is also used for FAR and AUS.
The sample signal CPDUS needs to be activated only once
to fetch the entire CPDUS word. CPDUS, FAR1S, FAR2S,
AUS1S and AU2S cannot be asserted simultaneously. If
CPDUS, FAR1S, FAR2S, AUS1S and AU2S are not asserted,
activating the TMC signal will generate invalid data on the
TMD output. If the CPDU status report interface is not used,
the CPDUS signal should be connected to V
DD
. Figure 13
below describes the CPDU telemetry serial interface.
Serial FAR Status Report Interface in 5 Samples
Mode
The 32 bit Frame Analysis Report can be retrieved through
this interface. It is possible for an application to use either a
serial or a parallel interface to read out this status report. The
serial or parallel mode is selected with the PAR configuration
pin of the PTD (see section 5.4). The serial interface in 5
samples mode uses 4 signal lines:
FAR1S: first status sample input,
FAR2S: second status sample input,
TMC: status clock input, is also used for CPDUS and
AUS,
TMD: status data output, is also used for CPDUS and
AUS.
The sample signal CLCWSA should be activated only once
to fetch the entire CLCW word. The serial CLCW interface has
been designed to allow the VCM device specified in reference
3 to automatically retrieve the CLCWs without any additional
components being required. If one of the CLCW interfaces is
not used, the following signals CLCWSx and CLCWCx should
be connected to V
DD
. Activating the CLCWCA (CLCWCB)
signal when CLCWSA (or CLCWSB) is deasserted, will
generate invalid data output on CLCWDA (or CLCWDB).
Note: The 0 bit is the MSB and is transmitted first.
Figure 13: CPDU Telemetry Serial Interface
CPDUS
TMC
TMD
PTD
APPLICATION
Telemetry
Systems
PAR = 0
CLCW Status Report Serial Interface
C
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