Access Address Registers (00H - 01H); Serial Control Register (02H) - Omron D6F-PH User Manual

7-2-1. Access Address Registers (00h – 01h)
The access address registers are used to access internal register blocks including sensor
register map, ADC register map, and internal memory. It specifies the data transfer start address
with auto increment for multiple byte data transfer.
Table6. Access Address Register
Address
00h
01h

7-2-2. Serial Control Register (02h)

Table7. Serial Control Register (02h)
The serial control register contains various bits to modify the behavior of the serial access.
Address MSB
D7
02h D_byte_
cnt[3]
• Acc_ctl2 [1：0] – Access Control bits
0 0 = 16bits address (A15-A0) access ( internal ROM and registers)
0 1 = 8bits address (A7-A0) access and used to access MCU internal 256 byte dual
port RAM.
1 0 = reserved
1 1 = reserved
• R_WZ – Read or Write access select bit
0 = Write Access
1 = Read Access
• Req- Request bit
0 = the previous request is done
1 = new request. After the serial bus bridge controller finishes a request, it will clear
Req to 0. For write requests the bridge controller moves the data in write data
buffers to the location pointed by access address. For read requests the bridge
controller stores the read data into data buffer.
• D_byte_cnt3 [3：0]
Transfer data byte count. It only supports 1, 2, 3, 4 data byte transfer.
9
MSB
D7 D6 D5
A15 A14 A13
A7 A6 A5
D6 D5
D_byte_ D_byte_
cnt[2] cnt[1]
D4 D3
A12 A11
A4 A3
D4 D3
D_byte_ Req
cnt[0]
D6F-PH MEMS Differential pressure Sensor User's Manual (A288)
LSB
D2 D1
A10 A9
A2 A1
D2 D1
R_WZ Acc_ctl2
[1]
D0
A8
A0
LSB
D0
Acc_ctl2
[0]