參數(shù)資料
型號： KS8701
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： FLEXTM Roaming Decoder II
中文描述： FLEXTM漫游解碼器二
文件頁數(shù)： 59/73頁
文件大?。?/td> 434K
代理商： KS8701
Appendix A: Application Notes
KS8701
58
FLEX
TM
Roaming Decoder II
MISCELLANEOUS RECEIVER STATES
In addition to the warm up and shut down states, the KS8701 has four other receiver states. When these
settings are applied to the receiver control lines, the KS8701 will be decoding the
EXTS1
and
EXTS0
input
signals. The timing of these signals and their duration depends on the data the KS8701 decodes. The four
settings are as follows:
1600sps Sync Setting:
This setting is applied when the KS8701 is searching for a 1600 symbols per
second signal.
3200sps Sync Setting:
This setting is applied when the KS8701 is searching for a 3200 symbols per
second signal.
1600sps Data Setting:
This setting is applied after the KS8701 has found the C or C sync word in a 1600
symbols per second frame.
3200sps Data Setting:
This setting is applied after the KS8701 has found the C or C sync word in a 3200
symbols per second frame.
Some examples of how these settings will be used in the KS8701 are shown In figure 14 on page 58.
Figure 14: Examples of Receiver Control Transitions
LOW BATTERY DETECTION
The KS8701 can be configured to poll the
LOBAT
input pin at the end of every receiver control setting. This
check can be enabled or disabled for each receiver control setting. If the poll is enabled for a setting, the pin will
be read just before the KS8701 changes the receiver control lines from that setting to another setting. The
KS8701 will send a Status Packet whenever the value on two consecutive reads of the
LOBAT
pin yields different
results.
Block 0
Sync 2
Sync 1
Frame
Info
Block 10
1600sps Sync
Setting
3200sps Data
Setting
3200sps Sync
Setting
1600sps Data or 3200sps Data
or Last Used Warm Up Setting
Possible
LOBAT
Check
Possible
LOBAT
Check
Possible
LOBAT
Check
Possible
LOBAT
Check
Possible
LOBAT
Check
1600sps Sync
Setting
1600sps Data
Setting
1600sps Data or 3200sps Data
or Last Used Warm Up Setting
FLEX
SIGNAL
RECEIVER
CONTROL
LINE SETTING
EXAMPLE #1
RECEIVER
CONTROL
LINE SETTING
EXAMPLE #2
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