TLE6209R_07 Datasheet, PDF (5/30 Pages) Infineon Technologies AG – 7 A H-Bridge for DC-Motor Applications

TLE 6209 R
2
Circuit Description
2.1
Serial Peripheral Interface (SPI)
The SPI is used for bidirectional communication with a control unit. The 8-bit
programming word or control word (see Table 1) is read in via the SDI serial data input,
and this is synchronized with the serial clock input SCLK. The status word appears
synchronously at the SDO serial data output (see Table 4).
The transmission cycle begins when the chip is selected with the chip-select-not (CSN)
input (H to L). When the CSN input changes from L to H, the word which has been read
into the shift register becomes the control word. The SDO output switches then to tristate
status, thereby releasing the SDO bus circuit for other uses. The SPI allows to parallel
multiple SPI devices by using multiple CSN lines. Due to the full duplex shift register, the
TLE 6209 R can also be used in daisy-chain configuration.
The settings made by the SPI control word become active at the end of the SPI
transmission and remain valid until a different control word is transmitted or a power on
reset occurs. At each SPI transmission, the diagnosis bits as currently valid in the error
logic are transmitted. The behavior of the diagnosis bits is described in Section 2.5.
Table 1
Bit
7
6
5
4
3
2
1
0
Input Data Protocol
Status Register Reset: H = reset
OVLO: H = on, L = off
not used
MSB of 2bit chopper-OFF-time
LSB of 2bit chopper-OFF-time
PWM Operation mode: H = Fast decay, L = Slow decay
MSB of 2 bit chopper current limit
LSB of 2 bit chopper current limit
Data Sheet, Version 3.1
5
2007-08-01