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Si47xx-EVB
Table 17. FM Receiver Settings RDS Window Descriptions
#
Items
Description
1
Radio Data Service PS: Program Service Indicator (8 characters).
RT: Radio Text Indicator (64 characters).
eRT: Enhanced Radio Text Indicator
CT: Clock Indicator showing time, day, and date.
Group Error Rate indicates the percentage of uncorrectable groups received.
PTY: Program Type Indicator
PI: PI Code Indicator
2
3
4
5
6
7
8
Sync Times
RDS
Synchronization
Indicator
Alternate
Frequency
Indicator
Group Counters
Block Counters
Reset
Radio Text Plus
Time required to synchronize, display radio text, and display program service.
Indicates that RDS is synchronized.
When present, shows a list of alternate frequencies. Alternate frequency methods A and
B are supported.
Provides the total number and percentage breakdown of group types 0–15, A/B. To view
this information, select Window ? RDS Group Counters. Please refer to Figure 58.
Provides the block error rates after tune and after RDS Sync.
After Tune Error Rate: After tune (STC interrupt), the ideal number of blocks the FM
tuner should have received is calculated. Also, the number of accepted blocks and
errors are calculated.
Error Rate = number of errors / number of ideal blocks after tune.
After Sync Error Rate: After RDS Sync (RDS interrupt), the ideal number of blocks the
FM tuner should have received is calculated. Also, the number of accepted blocks and
errors are calculated.
Error Rate = number of errors / number of ideal blocks after sync
Because it usually takes 100~200ms for the FM tuner to synchronize to RDS data (STC
interrupt always comes before RDS interrupt), "After Tune Error Rate" will always be
greater than "After Sync Error Rate." After a long time, both error rates should
consolidate at similar levels.
Resets the block counter numbers.
Radio Text Plus (RT+) Class and Item Information Indicator
Rev. 0.8
75
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