MC68HC08AS32 Datasheet, PDF (346/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Byte Data Link Controller-Digital (BDLC-D)
20.6.1 Protocol Architecture
The protocol handler contains the state machine, Rx shadow register, Tx
shadow register, Rx shift register, Tx shift register, and loopback
multiplexer as shown in Figure 20-13.
BDRxD
TO PHYSICAL INTERFACE
BDTxD
DLOOP FROM BCR2
LOOPBACK CONTROL
LOOPBACK
MULTIPLEXER
STATE MACHINE
Rx SHIFT REGISTER
Rx SHADOW REGISTER
8
Tx SHIFT REGISTER
Tx SHADOW REGISTER
8
TO CPU INTERFACE AND Rx/Tx BUFFERS
Figure 20-13. BDLC Protocol Handler Outline
Advance Information
346
Byte Data Link Controller-Digital (BDLC-D)
MC68HC08AS32 — Rev. 3.0
MOTOROLA