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ST7DALIF2 Datasheet(PDF) 90 Page - STMicroelectronics

Part # ST7DALIF2
Description  Configurable watchdog timer
PDF  171 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7DALIF2 Datasheet(HTML) 90 Page - STMicroelectronics

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DALI communication module
ST7DALIF2
90/171
16
DALI communication module
16.1
Introduction
The DALI Communication Module (DCM) is a serial communication circuit designed for
controllable electronic ballasts. Ballasts are the devices used to provide the required starting
voltage and operating current for fluorescent, mercury, or other electric-discharge lamps.
The DCM supports the DALI (Digital Addressable Lighting Interface) communications
standard (IEC standard).
16.2
Main features
– 8-bit forward address register for addressing up to 64 digital ballasts
– 1.2 kHz transmission rate ±10%
– 8-bit forward and backward data registers for bi-directional communications
– Maskable interrupt
Figure 41.
DALI communication module block diagram
Note:
The 4-bit preshift register is always active, except when in Halt mode or if the DCME bit = 0.
16-bit Shift Register
1/16
1/N
8-bit DCMCLK
8-bit DCMFA
8-bit DCMFD
8-bit DCMBD
DALIOUT
DALIIN
Arbitration &
Error Detection
8
8
8
4-bit Pre-shift
fCPU
CK0
CK1
CK2
CK3
RTF
EF
ITF
ITE
FTS
RTS
RTA
DCME
0
0
0
0
fCPU
DCMCSR
DCMCR
DCM Interrupt Request
Register
Register
Register
Register
Edge
Detector
Register
Register
Register
fDALI
4-bit sample
clock counter



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