Specifications
Installation and Operation Manual Appendix C I2C Interface Management
MiRICi-E3T3 Ver. 2.2 Serial Link Message Format C-3
Management Message Format
Two types of I
2
C message structures are transferred from the host to MiRICi-E3T3
and vice versa see
Figure
C-2
.
Multi data byte I
2
C Message
Start Control
R/W
Slave address Data
Byte 1 Byte 2 Byte 3
Data
Byte 8
Length of
Parameter
Parameter
Byte 3 Byte 4 Byte 5Byte 2Byte 1
Index MSB Index LSB
R/W
Management Message
Figure
C-2. Management Message Encapsulated in the Multi-Data byte I
2
C Message
The management message is encapsulated in the Data bytes of the I
2
C message
(bytes 3-8). The slave address points to the reserved area in page 0 of the
identification memory (addresses 0x80 to 0x9E).
The data bytes of the I
2
C message carry the message from the host to the
MiRICi-E3T3 device.
The host message structure may be a write message such as a configuration
message or a read message like status. Messages are sent to MiRICi-E3T3 in the
format shown as described in
Figure
C-3.
Index
2 bytes
Read/Write
1 byte
Length of Parameter
1 byte
Data
Reserved Area
128 0x80
0xFF
255
Figure
C-3. Message Format