Datasheet

Functional Description
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Freescale Semiconductor 181
Figure 18-4. SCI Transmitter
Register Name Bit 7654321Bit 0
SCI Control Register 1 (SCC1)
Read:
LOOPS ENSCI TXINV M WAKE ILTY PEN PTY
Write:
Reset:00000000
SCI Control Register 2 (SCC2)
Read:
SCTIE TCIE SCRIE ILIE TE RE RWU SBK
Write:
Reset:00000000
SCI Control Register 3 (SCC3)
Read: R8
T8 R R ORIE NEIE FEIE PEIE
Write:
Reset:UU000000
= Unimplemented U = Unaffected R = Reserved
Figure 18-5. SCI Transmitter I/O Register Summary
PEN
PTY
H876543210L
11-BIT
TRANSMIT
STOP START
T8
SCTE
SCTIE
TCIE
SBK
TC
CGMXCLK
PARITY
GENERATION
MSB
SCI DATA REGISTER
LOAD FROM SCDR SHIFT ENABLE
PREAMBLE
(ALL ONES)
BREAK
(ALL ZEROS)
TRANSMITTER
CONTROL LOGIC
SHIFT REGISTER
TC
SCTIE
TCIE
SCTE
TRANSMITTER CPU INTERRUPT REQUEST
M
ENSCI
LOOPS
TE
TXINV
INTERNAL BUS
÷ 4
PRE-
SCALER
SCP1
SCP0
SCR2
SCR1
SCR0
BAUD
DIVIDER
÷ 16
TxD