Справочник Пользователя для Murata Electronics North America 5811M

 Incorporated

M-5811-0008 Rev -

Protocol Modes Definitions

mode 00

Transparent mode used for point-to-point networks or
multipoint remotes; does not support any packet types.

mode 03

This mode includes notification when remotes are
registered or dropped through

CONNECT

and

DISCONNECT

packets that are sent to the user application

at the base station and at the remote. No sequence numbers
are provided.

packet

types

supported: Data

CONNECT

DISCONNECT

3.1. Packet Formats

The byte formats for each packet type are shown in the table below. Packet fields are
organized to fall on byte boundaries. In the case of bit-level fields, most-significant bits are
on the left.

WIT5811

packet types (

mode-03

Transmit and Receive:

Base

DATA

1110 1001

1100 0101

00HH HHHH 00SS SSSS LLLL LLLL LLLL LLLL

<0-65536 bytes data>

Remote

DATA

1110 1001 1100 0101 0000 0000 00SS SSSS LLLL LLLL LLLL LLLL

<0-65536 bytes data>

Receive

only:

CONNECT

1110 1001 1100 0101 10HH HHHH RRRR TTTT 00NN NNNN

<3 byte

remote ID>

DISCONNECT

1110 1001 1100 0101 11HH HHHH 0111 1111

: handle number (0-63)

: packet sequence number (0-63)

: data length (0-65536)

: remote's previous network number (if roamed)

: receive sequence number (from previous cell)

: transmit sequence number (from previous cell)

Note that while the packet length can be set to 65536, the maximum number of bytes
transmitted per hop is limited to the lesser of 65536 or the length specified by maximum data
length. Packets with a data length longer than that will be discarded and not sent. See Get
Maximum Data Length for more details.

Handle 63 (3FH) is reserved for broadcast packets from the base to all remotes.
Acknowledgment requests are not supported for broadcasts. For this reason, it is a good idea
to send broadcast messages several times to increase the odds of reaching all remotes.