TLE9869QXA20_15 Datasheet, PDF (30/122 Pages) Infineon Technologies AG – Microcontroller with LIN and H-Bridge MOSFET Driver for Automotive Applications

TLE9869QXA20
System Control Unit - Power Modules (SCU-PM)
7
System Control Unit - Power Modules (SCU-PM)
7.1
Features
• Clock Watchdog Unit (CWU): supervision of all clocks with NMI signaling relevant to power modules
• Interrupt Control Unit (ICU): all interrupt flags and status flags with system relevance
• Power Control Unit (PCU): takes over control when device enters and exits Sleepand Stop Mode
• External Watchdog (WDT1): independent system watchdog for monitoring system activity
7.2
Introduction
7.2.1 Block Diagram
The System Control Unit of the power modules consists of the sub-modules in the figure shown below:
On signals to analog
peripherals;
status signals from
analog peripherals
AMBA AHB
PCU
fsys
MI_CLK
CWU
TFILT_CLK
I
N
T
E
WDT1
LP_CLK
R
N
A
L
PREWARN_SUP_NMI
B
U
ICU
PREWARN_SUP_INT
S
INT<n:0>
System Control Unit -Power Modules
SC U_ PM_Block_D iagr am_ C ust.vsd
Figure 11 Block diagram of System Control Unit - Power Modules
AMBA AHB (Advanced High-Performance Bus)
CWU (Clock Watchdog Unit)
• fsys; system frequency: PLL output
• MI_CLK; measurement interface clock (analog clock): derived from fsys using division factors 1/2/3/4
• TFILT_CLK; clock used for digital filters: derived from fsys using configurable division factors
Data Sheet
30
Rev. 1.0, 2015-04-30