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参数资料
| 型号： | TLE7209R |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, PDSO20 |
| 封装： | PLASTIC, SOP-20 |
| 文件页数： | 2/31页 |
| 文件大小： | 484K |
| 代理商： | TLE7209R |
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TLE 7209R
Circuit Description
Final Datasheet
10
V2.5, 2004-may-25
The first two bits of an instruction may be used to establish an extended device-
addressing. This gives the opportunity to operate up to 4 Slave-devices sharing one
common CSN signal from the Master-Unit (see Figure 7)
Figure 6
SPI block-diagram
2.4.2.2
Characteristics of the SPI Interface
1. When DMS is > 3.65V, the SPI is active, independently of the state of EN or DIS.
During active reset conditions (DMS < 3.65V) the SPI is driven into its default state.
When reset becomes inactive, the state machine enters into a wait-state for the next
instruction.
2. If the slave select signal at CSN is inactive (high), the state machine is forced to enter
the wait-state, i.e. the state machine waits for the following instruction.
3. During active (low) state of the select signal CSN the falling edge of the serial clock
signal SCK will be used to latch the input data at SDI. Output data at SDO are driven
with the rising edge of SCK (see timing diagram Figure 13)
4. Chip-address:
In order to establish the option of extended addressing the uppermost two bits of the
instruction-byte (i.e the first two SDI-bits of a Frame) are reserved to send a chip-
address. To avoid a bus conflict the output SDO must stay high impedance during the
addressing phase of a frame (i.e. until the address-bits are recognized as valid chip-
address). If the chip-address does not match, the data at SDI will be ignored and SDO
remains high impedance for the complete frame. See also Figure 7
5. Verification byte:
Simultaneously to the receipt of an SPI instruction TLE 7209R transmits a verification
byte via the output SDO to the controller. Refer to Figure 8. This byte indicates normal
CSN
DMS
SCK
SDI
SDO
shift-register
SPI-Control:
-> state machine
-> clock counter
-> instruction recognition
SPI pow er-
supply
DIA_REG
Diagnosis
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