Advertisement
6.7.4
SPI Single Read/Write
(1)
Write
Set the single Read/Write (Write) data pattern to the instruction area. Set to register address to the
next 8 bit, then register data to after next 8 bit. To write other address registers' data continuously,
repeat above routine. After input of 24 bit data (Instruction, address and 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.
Instruction Address
MOSI
Instruction
0 0 0 0
X
CLK
CS
(2)
Read
Set the single Read/Write (Read) data pattern to the instruction area. Set to 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. After output that 8 bit data, repeat above routine to read other address data continuously.
During data read from MISO pin, MOSI pin does not accept input data. MISO pin outputs the register
data when CS pin is "L" and CLK signal is at the falling edge.
MOSI
Instruction Address
MISO
Instruction
MOSI
0 0 0 0
X 1
MISO
CLK
CS
Data
Instruction Address
Address
1
1
0
Fig 6-15 Write Format (SPI Single Read/Write)
Instruction Address
Read
Data
Address
1
1
High-Impedance
Fig 6-16 Read Format (SPI Single Read/Write)
Data
- - -
Data
Instruction
0 0 0 0
- - -
Read
- - -
Data
Instruction
Don't care
0 0 0 0
Data
35
TC32306FTG
Data
X
1
1 0
- - -
- - -
- - -
X: 0 or 1 (Don't care)
Address
Read
Data
Don't care
- - -
X 1
1
1
- - -
- - -
- - -
X: 0 or 1 (Don't care)
2015-10-01
Advertisement
