s908gr16ag4cfj Freescale Semiconductor, Inc, s908gr16ag4cfj Datasheet - Page 150

• Manufacturer Part Number: s908gr16ag4cfj
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Enhanced Serial Communications Interface (ESCI) Module
14.4.3.1 Character Length
The receiver can accommodate either 8-bit or 9-bit data. The state of the M bit in ESCI control register 1
(SCC1) determines character length. When receiving 9-bit data, bit R8 in ESCI control register 3 (SCC3)
is the ninth bit (bit 8). When receiving 8-bit data, bit R8 is a copy of the eighth bit (bit 7).
150
INTERRUPT REQUEST
CPU INTERRUPT
ERROR CPU
BUS CLOCK
CGMXCLK
REQUEST
OR
PSSB4
PSSB3
PSSB2
PSSB1
PSSB0
PDS2
PDS1
PDS0
SCP1
SCP0
LINR
÷
4
WAKE
Figure 14-6. ESCI Receiver Block Diagram
SCALER
ILTY
PEN
BKF
RPF
PTY
PRE-
M
MC68HC908GR16A Data Sheet, Rev. 1.0
RxD
DIVIDER
BAUD
ALL ZEROS
CHECKING
WAKEUP
IDLE
ILIE
SCRF
SCRIE
OR
ORIE
NF
NEIE
FE
FEIE
PE
PEIE
PARITY
LOGIC
RECOVERY
SCR2
SCR1
SCR0
DATA
÷
16
INTERNAL BUS
H
8
7
RECEIVE SHIFT REGISTER
ESCI DATA REGISTER
6
5
11-BIT
SCRIE
SCRF
ORIE
IDLE
NEIE
FEIE
PEIE
4
ILIE
OR
NF
PE
R8
FE
Freescale Semiconductor
3
2
1
0
L
RWU