Linx Technologies TRM-915-R250 - Manual (Page 28)

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CMD Halts Traffic- Address = 0x6E; NV Address = 0x23
When configuring the module’s register settings, it is possible that incoming
RF transmissions can intermix with the module’s response, making it
difficult to determine if your commands were successfully processed.
Changing this register setting to 0x01 causes the module to store incoming
RF traffic (up to the RF buffer overflow) while the CMD line is low. When the
CMD line is returned high, the module outputs all buffered data.
Figure 57 shows examples of the commands and Figure 58 shows the
available values.
Figure 57: 250 Series Transceiver CMD Halts Traffic Command and Response
250 Series CMD Halts Traffic Register Settings
V1 Mode
0x00 Disable Halt
0x01 Enable Halt
Figure 58: 250 Series CMD Halts Traffic Register Settings
250 Series CMD Halts Traffic
Read Command Read Response
Header Size Escape Address ACK Address Value
0xFF 0x02 0xFE
0x6E
0x23
0x06
0x6E
0x23
V1
Write Command
Header Size Address Value
0xFF 0x02
0x6E
0x23
V1
Exception Mask - Address = 0x6C; NV Address = 0x21
The module has a built-in exception engine that can notify the host
processor of an unexpected event. When an exception occurs, this register
is ANDed with the exception code. A non-zero result causes the EX line to
be asserted. Reading the regEXCEPTION register clears the exception and
resets the EX line. If the result is zero, the EX line is not asserted but the
exception code is stored in the regEXCEPTION register.
Figure 55 shows examples of the commands and Figure 56 shows the
available values.
Figure 55: 250 Series Transceiver Exception Mask Command and Response
250 Series Example Exception Masks
V1 Exception Name
0x08 Allows only EX_BUFOVFL and EX_RFOVFL to trigger the EX line
0x10 Allows only EX_WRITEREGFAILED to trigger the EX line
0x20 Allows only EX_NORFACK to trigger the EX line
0x40
Allows only EX_BADCRC, EX_BADHEADER, EX_BADSEQID and EX_
BADFRAMETYPE exceptions to trigger the EX line
0x60
Allows EX_BADCRC, EX_BADHEADER, EX_BADSEQID, EX_BADFRAMETYPE
and EX_NORFACK exceptions to trigger the EX line
0xFF Allows all exceptions to trigger the EX line
Figure 56: 250 Series Transceiver Example Exception Masks
250 Series Exception Masks
Read Command Read Response
Header Size Escape Address ACK Address Value
0xFF 0x02 0xFE
0x6C
0x21
0x06
0x6C
0x21
V1
Write Command
Header Size Address Value
0xFF 0x02
0x6C
0x21
V1