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6.7.5
SPI Burst Read/Write
(1)
Write
This function continuously writes data to the order from the specified address. Set the burst
Read/Write (Write) data pattern to the instruction area. Set to start register address to the next 8 bit,
then register data to after next 8 bit. After that, repeat sequentially to set only 8 bit register data to
the order. After every input of 8 bit data, the register value is updated. The register data from MOSI
pin is written when CS pin is "L" and CLK signal is at the rising edge. Not to write unnecessary data
to the following address, set CS pin to be "H" as soon as possible after writing all of the data.
Instruction Address
MOSI
Instruction
0 0 0 0
X
CLK
CS
Notice: To change the instruction or start register address, once set CS pin to be "H" in the burst
Read/Write.
(2)
Read
This function continuously reads data to the order from the specified address. Set the burst Read/Write
(Read) data pattern to the instruction area. Set to start register address to the next 8 bit to read that
data. After input the address, MISO pin outputs 8 bit data from the specified register. To stop or finish
reading data, set CS pin to be "H".
MOSI
Instruction Address
MISO
Instruction
0 0 0 0
X
MOSI
MISO
CLK
CS
N
N+1
Data
Data
Address
0
1
0
Fig 6-17 Write Format (SPI Burst Read/Write)
N
N+1
Read
Read
Data
Data
Address
0
1 1
High-Impedance
Fig 6-18 Read Format (SPI Burst Read/Write)
N+2
N+3
Data
Data
- - -
Data
Data
- - -
N+2
N+3
Read
Read
- - -
Data
Data
Don't care
Read Data
Read Data
36
TC32306FTG
Data
Data
- - -
- - -
- - -
X: 0 or 1 (Don't care)
Read
Read
Data
Data
- - -
- - -
- - -
- - -
X: 0 or 1 (Don't care)
2015-10-01
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