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IRS: Ignore Re-synchronization Signal. When this bit is set, the FLEX decoder will not go
asynchronous when detecting an Ar or Ar signal during searches for A-words. It will merely report
that the re-synchronization signal was received by setting RSR to 1 in the Roaming Status packet.
This allows the host to decide what to do when the paging device is synchronous to more than one
channel and only one channel is sending the re-synchronization signal. It also prevents the FLEX
decoder from losing synchronization when it detects the re-synchronization signal while the
paging device is checking an unknown channel. This bit is set and cleared by the host. (value after
reset=0)
NBC: Network Bit Check. Setting this bit will enable reporting of the received network bit value
(NBU and n) in the Roaming Status Packet. Setting this bit also makes the FLEX decoder abandon
a frame after the Frame Info word without synchronizing to the frame if the frame information
word is uncorrectable or if the n bit in the frame information word is not set. If the FLEX decoder
was in synchronous mode when this occurred (probably due to synchronizing to a second
channel), it will maintain synchronization to the original channel. If the FLEX decoder was in
asynchronous mode when this occurred, it will stay in asynchronous mode and end the A-word
search. This is done to avoid synchronizing to a non-roaming channel when searching for roaming
channels. This bit is set and cleared by the host. (value after reset=0)
MCM: Manual Collapse Mode. When this bit is set, the FLEX decoder behaves as if the system
collapse was 7. The FLEX decoder will not apply the received system collapse to the AF bits.
When this bit is set, the received system collapse is reported to the host via SCU and RSC in the
Roaming Status Packet. This is so the host can modify the AF bits based on the system collapse of
the channel. This bit is set and cleared by the host. (value after reset=0)
IS1:Invert EXTS1. Setting this bit inverts the expected polarity of the EXTS1 pin from the way it
is configured by SP 1 in the Configuration Packet (e.g. if both IS1 and SP 1 are set, the polarity of
the EXTS1 pin is untouched). This bit is intended to be changed when a change in a channel
changes the polarity of the received signal. This bit is set and cleared by the host. This bit has the
equivalent effect when using the internal demodulator. (value after reset=0)
SDF: Stop Decoding Frame. Setting this bit causes the FLEX decoder to stop decoding a frame
without losing frame synchronization. This bit is set by the host, and cleared by the FLEX decoder
once it has been processed. The packet with the SDF bit set must be sent after receiving the status
packet with EA bit set. It must be sent within 40ms of the end of block in which the FLEX
decoder set the EA bit. (value after reset=0)
RSP: Receiver Shutdown Packet enable. When this bit is set, a Receiver Shutdown Packet will be
sent whenever the receiver is shut down. The receiver shutdown packet informs the host that the
receiver shutdown, and how long it will be before the FLEX decoder will automatically warm the
receiver back up. (value after reset=0)
SND: Start Noise Detect. Setting this bit while the FLEX decoder is battery saving will cause it to
warm-up the receiver, run a noise detect, and report the result of the noise detect via NDR in the
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