Data Sheet TLE 6240 GP

V3.1

Page

26.Aug 2002

9

Serial Control of the Outputs: SPI protocol

Each output is independently controlled by an output latch and a common reset line, which

disables all outputs. The Serial Input (SI) is read on the falling edge of the serial clock. A logic

high input 'data bit' turns the respective output channel ON, a logic low 'data bit' turns it OFF.

CS

must be low whilst shifting all the serial data into the device. A low-to-high transition of

CS

transfers the serial data input bits to the output control buffer.

The 16 channels of the TLE 6240 GP are divided up into two parts for the control of the out-

puts (ON, OFF) and the diagnosis information.

Channel 1 to 8:

Serial Input (SI) information consists of 16 bit. 8 bit contain the input driver information for

channel 1 to 8. The remaining 8 bits are used to program a certain operation mode.

Control Byte1: Operation mode and diagnosis select for channels 1 to 8

Data Byte1:

ON/OFF information for channel 1 to 8

Serial Output (SO) data consists of 16 bit containing the diagnosis information for channels

1 to 8 with two bits per channel.

DIAG_1:

Diagnosis data for channels 1 to 8.

Channel 9 to 16:

Control Byte2: Operation mode and diagnosis select for channels 9 to 16

Data Byte2:

ON/OFF information for channel 9 to 16

DIAG_2:

Diagnosis data for channels 9 to 16.

To drive all 16 channels and to get the complete diagnosis data of the TLE 6240 GP a two

step access has to be performed as follows:

First access:

SI

SO

CS

SI command: Control Byte 1 programs the

operation mode of channels 1 to 8.

Data Byte 1 gives the input information (on

or off) for Channel 1 to 8.

SO diagnosis: Diagnosis information of

channel 1 to 8 or 9 to 16, depending on the

SI control word before.

Control Byte1

Data Byte1

16 bit Diagnosis

SI

SO

CS

Control Byte1

Data Byte1

DIAG_1 (Ch. 1 to 8)

SI command: Control Byte 1 programs the

operation mode of Channels 1 to 8.

Data Byte 1 gives the input information (on

or off) for Channel 1 to 8.

SO diagnosis: 16 bit diagnosis information

(two bit per channel) of channels 1 to 8