Driving Condition; Serial If - Panasonic MN34120PAJ Manual

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1.6 Driving Condition

1.6.1 Serial IF

This sensor provides serial IF to establish 3-wire packet communication with host. Three signal lines are used
for the packet communication with host. (SCS pin, SCK pin, SI pin)
PSV
SCS
SCK
SI
SCS = Low: Packet transmission of register write.
Packets are transmitted by 1cycle (4byte) except for consecutive writing mode.
Refer to "Consecutive Writing Mode (write only)"about consecutive writing mode.
When transmission is broken up, set SCS = High (Set SCK clock 2T or more) and try transmission again.
The data format at transmit packets is as follows.
LSB first.
Write control bit = "Low"
Mode 1byte
Write Address lower 8bit
mode
2015/10/01
Enactment Revision
Specifications
1byte 2byte 3byte 4byte
1cycle (4bytes)
Figure 1.6.1 Definition of Send (Write) Timing
Table 1.6.1 Data format of Send (Write)
2byte
Address upper 7bit
+ write control 1bit
1byte 2byte 3byte
3byte
Data lower 8bit (IO)
Generalplus Technology Inc.
Panasonic Semiconductor Solutions Co., Ltd.
MN34120PAJ
Total Page
Page
30
96
4byte
4byte
Data upper 8bit(IO)