ks8701 Samsung Semiconductor, Inc., ks8701 Datasheet - Page 59

• Manufacturer Part Number: ks8701
• Description: Flextm Roaming Decoder Ii
• Manufacturer: Samsung Semiconductor, Inc.

Appendix A: Application Notes
MISCELLANEOUS RECEIVER STATES
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:
LOW BATTERY DETECTION
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.
58
In addition to the warm up and shut down states, the KS8701 has four other receiver states. When these
Some examples of how these settings will be used in the KS8701 are shown In figure 14 on page 58.
The KS8701 can be configured to poll the LOBAT input pin at the end of every receiver control setting. This
LINE SETTING
LINE SETTING
EXAMPLE #2
EXAMPLE #1
RECEIVER
1600sps Sync Setting: This setting is applied when the KS8701 is searching for a 1600 symbols per
3200sps Sync Setting: This setting is applied when the KS8701 is searching for a 3200 symbols per
1600sps Data Setting: This setting is applied after the KS8701 has found the C or C sync word in a 1600
3200sps Data Setting: This setting is applied after the KS8701 has found the C or C sync word in a 3200
CONTROL
RECEIVER
CONTROL
SIGNAL
FLEX
second signal.
second signal.
symbols per second frame.
symbols per second frame.
1600sps Data or 3200sps Data
or Last Used Warm Up Setting
1600sps Data or 3200sps Data
or Last Used Warm Up Setting
Figure 14: Examples of Receiver Control Transitions
Block 10
Possible
Possible
LOBAT
LOBAT
Check
Check
FLEX
TM
Roaming Decoder II
Sync 1
1600sps Sync
Setting
1600sps Sync
Frame
Possible
LOBAT
Info
Check
Setting
3200sps Sync
Sync 2
Setting
Possible
Possible
LOBAT
LOBAT
Check
Check
3200sps Data
1600sps Data
Block 0
Setting
Setting
KS8701