TLE75080-EMH Datasheet, PDF (21/80 Pages) Infineon Technologies AG – SPI Driver for Enhanced Relay Control

TLE75080-EMH
Control Pins
5
Control Pins
The device has three pins (IN0, IN1 and IDLE) to control directly the device without using SPI.
5.1
Input pins
TLE75080-EMH has two input pins available. Each input pin is connected by default to one channel (IN0 to
channel 2, IN1 to channel 3). Input Mapping Registers MAPIN0 and MAPIN1 can be programmed to connect
additional or different channels to each input pin, as shown in Figure 9. The signals driving the channels are an
OR combination between OUT register status, PWM Generators (according to PWM Generator Output Mapping
status), IN0 and IN1 (according to Input Mapping registers status). See Chapter 7.5 for further details.
IN1
IIN 1
Limp Home mode
(default )
MAPIN1
8
&
8
IN0
Limp Home mode
(default )
Channel 7
I_{IN 0}
Channel 6
OR
8
Channel 5
Channel 4
Channel 3
Channel 2
MAPIN0
8
&
8
Channel 1
Channel 0
OUT
8
OR
8
InputMapping_8ch.emf
Figure 9 Input Mapping
The logic level of the input pins can be monitored via the Input Status Monitor Register (INST). The Input Status
Monitor is operative also when TLE75080-EMH is in Limp Home mode. If one of the Input pins is set to “high” and
the IDLE pin is set to “low”, the device switches into Limp Home mode and activates the channel mapped by
default to the input pins. See Chapter 6.1.5 for further details.
5.2
IDLE pin
The IDLE pin is used to bring the device into Sleep mode operation when is set to “low” and all input pins are set
to “low”.When IDLE pin is set to “low” while one of the input pins is set to “high” the device enters Limp Home mode.
To ensure a proper mode transition, IDLE pin must be set for at least t_IDLE2SLEEP (P_6.3.54, transition from “high”
to “low”) or t_SLEEP2IDLE (P_6.3.53, transition from “low” to “high”).
Setting the IDLE pin to “low” has the following consequences:
• All registers in the SPI are reset to default values
• V_DD and V_S Undervoltage detection circuits are disabled to decrease current consumption (if both inputs are
set to “low”)
Data Sheet
21
Rev. 1.0, 2016-06-22