MC908AP16CFAE Datasheet, PDF (182/324 Pages) Freescale Semiconductor, Inc – Table of Contents

Infrared Serial Communications Interface Module (IRSCI)
12.2 Pin Name Conventions
The generic names of the IRSCI I/O pins are:
• RxD (receive data)
• TxD (transmit data)
IRSCI I/O (input/output) lines are implemented by sharing parallel I/O port pins. The full name of an IRSCI
input or output reflects the name of the shared port pin. Table 12-1 shows the full names and the generic
names of the IRSCI I/O pins. The generic pin names appear in the text of this section.
Table 12-1. Pin Name Conventions
Generic Pin Names:
Full Pin Names:
RxD
PTC7/SCRxD
TxD
PTC6/SCTxD
NOTE
When the IRSCI is enabled, the SCTxD pin is an open-drain output and
requires a pullup resistor to be connected for proper SCI operation.
Addr.
$0040
$0041
$0042
$0043
$0044
$0045
$0046
$0047
Register Name
Read:
IRSCI Control Register 1
(IRSCC1)
Write:
Reset:
Read:
IRSCI Control Register 2
(IRSCC2)
Write:
Reset:
Read:
IRSCI Control Register 3
(IRSCC3)
Write:
Reset:
Read:
IRSCI Status Register 1
(IRSCS1)
Write:
Reset:
Read:
IRSCI Status Register 2
(IRSCS2)
Write:
Reset:
Read:
IRSCI Data Register
(IRSCDR)
Write:
Reset:
Read:
IRSCI Baud Rate Register
(IRSCBR)
Write:
Reset:
IRSCI Infrared Control ^Read:
Register Write:
(IRSCIRCR) Reset:
Bit 7
LOOPS
0
SCTIE
0
R8
U
SCTE
1
0
R7
T7
CKS
0
R
0
6
ENSCI
0
TCIE
0
T8
U
TC
1
5
0
0
SCRIE
0
DMARE
0
SCRF
4
M
0
ILIE
0
DMATE
0
IDLE
0
0
3
WAKE
0
TE
0
ORIE
0
OR
0
0
0
R6
R5
T6
T5
0
SCP1
0
0
0
0
0
0
= Unimplemented
0
0
R4
R3
T4
T3
Unaffected by reset
SCP0
R
0
0
0
R
0
0
R = Reserved
2
1
ILTY
PEN
0
0
RE
RWU
0
0
NEIE
FEIE
0
0
NF
FE
0
0
BKF
0
0
R2
R1
T2
T1
SCR2
SCR1
0
0
TNP1
TNP0
0
0
U = Unaffected
Figure 12-1. IRSCI I/O Registers Summary
Bit 0
PTY
0
SBK
0
PEIE
0
PE
0
RPF
0
R0
T0
SCR0
0
IREN
0
MC68HC908AP Family Data Sheet, Rev. 4
182
Freescale Semiconductor