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STV3550 データシート(PDF) 84 Page - STMicroelectronics

部品番号 STV3550
部品情報  LCD and Matrix Display TV Processor
PDF  144 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV3550 データシート(HTML) 84 Page - STMicroelectronics

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STV3550
CPU and System Management Functional Description
6.7
Interrupt Management
The ST20 core includes an Interrupt Controller (ITC) able to manage up to 16 interrupt levels. On
top of this block, the STV3550 has an Interrupt Level Controller (ILC) which connects the 57
interrupt sources.
The interrupt sources can be on-chip or off-chip.They can be synchronous or asynchronous (the
ILC re-synchronizes the asynchronous sources). Certain interrupt sources can also behave as
wake-up sources used to exit Standby mode.
Figure 54: Example of Wake-up Interrupt Management
Table 21: Interrupt Sources (page 1 of 2)
Interrupt Source Name
Number of
Interrupts
Number of
Synchronous
Interrupts
Number of
Asynchronous
Interrupts
Number of
Wake-up
Interrupts
Off-chip
Interrupts
OSD
4
4
Video Display Pipeline
5
5
SDIN
19
10
9
VTG
5
5
Peripherals and I/Os
20
4
16
7
2
2DBM
2
2
10-bit
Wake-up
adc clk
Clk toward
other blocks
mode (CPU)
AD1
IR
Ext IT1
Ext IT2
Ext IT3
Ext IT4
switched off
in Standby
(OR)
27 MHz
Wake-up
ITC
(from ILC3)
Clock
Generator
RTC
Timer
Infrared
Processor
External IT 1
External IT 2
External IT 3
External IT 4
EXTALIN
EXTALOUT
AD6
Analog-to-Digital
Converter



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