TLE9879QXA40
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 Sleep and 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
I
N
T
PCU
WDT1
LP_CLK
E
R
N
A
L
fsys
MI_CLK
PREWARN_SUP_NMI
PREWARN_SUP_INT
INT<n:0>
B
U
S
CWU
ICU
TFILT_CLK
System Control Unit -Power Modules
SCU_PM_Block_Diagram_Cust.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
INFINEON [ Infineon ]
