Datasheet

Functional Description
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
Freescale Semiconductor 189
15.4.3 Receiver
Figure 15-6 shows the structure of the ESCI receiver. The receiver I/O registers are summarized in
Figure 15-3.
Figure 15-6. ESCI Receiver Block Diagram
ALL ONES
ALL ZEROS
M
WAKE
ILTY
PEN
PTY
BKF
RPF
H876543210L
11-BIT
RECEIVE SHIFT REGISTER
STOP START
DATA
RECOVERY
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
SCRIE
SCRF
ILIE
IDLE
WAKEUP
LOGIC
PARITY
CHECKING
MSB
ERROR CPU
CPU INTERRUPT
ESCI DATA REGISTER
R8
SCRIE
ILIE
RWU
SCRF
IDLE
INTERNAL BUS
PRE-
SCALER
BAUD
DIVIDER
÷ 4 ÷ 16
SCP1
SCP0
SCR2
SCR1
SCR0
RxD
BUS CLOCK
PRE-
SCALER
PDS1
PDS2
PDS0
PSSB3
PSSB4
PSSB2
PSSB1
PSSB0
LINR
REQUEST
INTERRUPT REQUEST
ORIE
NEIE
FEIE
PEIE
OR
NF
FE
PE