Freescale Semiconductor DEMO9S08DZ60 Demo Board DEMO9S08DZ60 DEMO9S08DZ60 Ficha De Dados
Códigos do produto
DEMO9S08DZ60
Chapter 14 Serial Communications Interface (S08SCIV4)
MC9S08DZ60 Series Data Sheet, Rev. 4
Freescale Semiconductor
293
shows the receiver portion of the SCI.
Figure 14-3. SCI Receiver Block Diagram
H
8
7
6
5
4
3
2
1
0
L
SCID – Rx BUFFER
(READ-ONLY)
INTERNAL BUS
STOP
11-BIT RECEIVE SHIFT REGISTER
START
SHIFT DIRECTION
LSB
FROM RxD PIN
RATE CLOCK
Rx INTERRUPT
REQUEST
REQUEST
DATA RECOVERY
DIVIDE
16
× BAUD
SINGLE-WIRE
LOOP CONTROL
WAKEUP
LOGIC
ALL 1s
MSB
FROM
TRANSMITTER
ERROR INTERRUPT
REQUEST
REQUEST
PARITY
CHECKING
BY 16
ACTIVE EDGE
DETECT