WI.232FHSS-25-R datasheet(39/67 Pages) RADIOMETRIX

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WI.232FHSS-25-R/ WI.232FHSS-250-R DATASHEET

Revision 1.1.0

Wi.232FHSS-25-R / Wi.232FHSS-250-R

Baud Rate

EX_NORFACK Timeout

2400

170ms

9600

75ms

19200

45ms

38400

30ms

57600

30ms

115200

30ms

Table 15, Per-Baud rate ACK timeout values.

4.1.8. CRC Checking (regUSECRC)

regNVUSECRC (0x08)

regUSECRC (0x53)

R/W

Default CRC Checking: Enabled (0x01)

Set to 0x01 to enable receiver CRC-16 validation, or 0x00 to disable. If this register is enabled (0x01), an

invalid packet will not be sent to the UART interface for transmission; it will be discarded. The default CRC

mode setting is enabled.

4.1.9. UART Minimum Transmission Unit (regUARTMTU)

regNVUARTMTU (0x09)

regUARTMTU (0x54)

R/W

Default UART Minimum Transmission Unit: 64

This register determines the UART buffer level that will trigger the transmission of a packet. This register

works in conjunction with the regTXTO register to determine when the module sends a packet. A pseudo-

code logical arrangement is:

if (UART_incoming_buffer_size >= regUARTMTU) or (UART_last_char_received_timer >

regTXTO) then SendPacket()

The minimum value is 1 and the maximum value is 192. The default value for this register is 64, which

provides a good mix of throughput and latency. At maximum data rate, a value of 128 will optimize

throughput. This register does not guarantee a particular transmission unit size; rather, it specifies the

minimum desired size. If there is not enough time left in a hop, for instance, the packet engine will send as

many characters as it can to fill the current hop, and send the remaining characters in the next hop.

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