TLE8110EE Datasheet, PDF (50/72 Pages) Infineon Technologies AG – Smart Multichannel Low Side Switch with Parallel Control and SPI Interface

FLEX
Smart Multi-Channel Switch
Control of the device
12.2.4.3 TOR - Transmission or Diagnosis Error Bit
As described in Chapter 12.2.3.1 and Chapter 12.2.3.2 the Transmission or Diagnosis Error bit [TOR] appears
on S_SO, as soon as CS makes a High-to-LOW transition until the first rising edge of the clock signal. The TOR
contains ONLY error information which has appeared in and since last frame. TOR does not contain any latched
information.
• Command Ignored and Modulo 8: In the next frame after the error, the TOR bit will be set once.
• Under voltage: After digital- or analogue under voltage, the TOR of the first transmission contains the error
information. In the following transmissions, the information is not shown anymore. But the under voltage
information is latched in the CMD_CSDS bit until it is cleared (see Chapter 12.3.1).
• OR operated Diagnosis or protection error information: If one of those errors has appeared since the last frame,
the information change is shown in the TOR bit. (The error is latched in the related Diagnosis and Error register
and remains there until it is cleared). But the TOR bit will show the information-change only once. In the next
frame, the TOR bit is cleared again
The information about the data transmission, TOR contains, is always from the previous transmission. The
Diagnosis information, the Bit contains is the status of the diagnosis until the CS high-to-low transition. Changes
in the diagnosis during the transmission are latched and stored until the next read-out cycle. By read-out of the
TOR-bit, no stored information is cleared. The Error information can be read out in detail, by sending the command
CMD_SDS and can be cleared (NOT Diagnosis Error) by the command CMD_CSDS (see Chapter 12.3.1)
In order to reduce the Micro Controller work load, it is possible to read out the TOR bit also without constructively
data transfer. That means, by just toggling CS, the status can be read out.
To allow using the TOR Bit also in SPI-Daisy-Chain configuration, the TOR-Bit is OR operated with S_SI which
contains the TOR information of the previous device in the Daisy-Chain.
12.3
Register and Command - Overview
This Chapter describes the Registers and Commands. The commands allow to carry through some actions, such
as reading out or clearing the diagnosis or reading out the Input Pins.
Specially highlighted here should be the encoded CMD_DMSx/OPSx commands - compactCONTROL -, a highly
efficient command-set to set a part of the output pins and read out the diagnosis at the same time. Included in this
command set is the possibility to check, if the communication works well as also the possibility to read-out some
of the parallel Input Pins INx. Using this compact command set can reduce the workload of the micro-controller
during run-time significantly.
CMD_RSD is preformed and short diagnostics [SD] is returned after each Write Cycle to any of the writable
registers.
After start-up of the device, the registers are loaded with the default settings as described below in the register
descriptions. The Registers are cleared and set back to the default values, when a low signal is applied to the pin
RST or an under-voltage condition appears at the supply pin V_CC what causes an under-voltage reset. If a low
signal at pin EN is applied or an under-voltage condition appears at pin V_DD, the Registers are not cleared.
Data Sheet
50
Rev. 1.0, 2009-06-15