mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 335

• Manufacturer Part Number: mc68hc908as60
• Description: Mc68hc908as60 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

21.5 BDLC MUX Interface
21.5.1 Rx Digital Filter
MC68HC908AS60 — Rev. 1.0
The MUX interface is responsible for bit encoding/decoding and digital
noise filtering between the protocol handler and the physical interface.
The receiver section of the BDLC includes a digital low-pass filter to
remove narrow noise pulses from the incoming message. An outline of
the digital filter is shown in
INTERFACE
INTERFACE
PHYSICAL
Freescale Semiconductor, Inc.
Rx DATA
(BDRxD)
CLOCK
FROM
MUX
For More Information On This Product,
Byte Data Link Controller-Digital (BDLC-D)
Figure 21-5. BDLC Rx Digital Filter Block Diagram
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D
INPUT
SYNC
Figure 21-4. BDLC Block Diagram
Q
UP/DOWN
Figure
4-BIT UP/DOWN COUNTER
PHYSICAL INTERFACE
PROTOCOL HANDLER
MUX INTERFACE
CPU INTERFACE
TO J1850 BUS
TO CPU
21-5.
Byte Data Link Controller-Digital (BDLC-D)
OUT
BDLC
D
LATCH
DATA
BDLC MUX Interface
Q
Technical Data
Rx DATA OUT
FILTERED