79
Pin Functions
Chapter 2
Preliminary User’s Manual U17566EE1V2UM00
2.4.9
Port group 5
Port group 5 is an 8-bit port group. In alternative mode, it comprises pins for
the following functions:
• External interrupt (INTP7) (µPD70F3424, µPD70F3425, µPD70F3426,
µPD70F3427 only)
• Sound Generator outputs (SGO, SGOA)
• Frequency output (FOUT)
• N-Wire interface signals (DDI, DDO, DCK, DMS)
• CAN1 transmit/receive data (CTXD1, CRXD1)
• UARTA1 transmit/receive data (TXDA1, RXDA1)
Port group 5 includes the following pins:
Note
1.
For pins that support only one alternative output mode, the PFCnm bit is
not available.
2.
The setting of bit OCDM.OCDM0 applies only to pins of port type R.
3.
The alternative
input
function of UARTA1 is provided on two pins. Thus you
can select on which pin the alternative function should appear.
Refer to
“Alternative input selection“ on page 50
.
Table 2-32
Port group 5: pin functions and port types
Pin functions in different modes
Pin function
after reset
Port type
Port mode
(PMCnm = 0)
Alternative mode
(PMCnm = 1)
On-chip
debug mode
(OCDM0 = 1)
Output mode (PMnm = 0)
Input mode
(PMnm = 1)
PFCnm = 0
ALT1-OUT
PFCnm = 1
ALT2-OUT
P50 (I/O)
FOUT
SGOA
INTP7
a
–
P50 (I)
M
P51 (I/O)
SGO
–
–
P51 (I)
M
P52 (I/O)
–
–
DDI (I)
P52 or DDI (I)
b
R
P53 (I/O)
–
–
DDO (O)
P53 (I) or
DDO (O)
b
R
P54 (I/O)
–
–
DCK (I)
P54 or DCK (I)
b
R
P55 (I/O)
–
–
DMS(I)
P55 or DMS(I)
b
R
P56 (I/O)
–
CRXD1/
RXDA1
–
P56 (I)
M
P57 (I/O)
TXDA1
CTXD1
–
–
P57 (I)
M
a)
µPD70F3424, µPD70F3425, µPD70F3426, µPD70F3427 only
b)
The pin function after reset depends on the reset source, that means on bit OCDM.OCDM0. Refer to
“OCDM -
On-chip debug mode register“ on page 45
and to the
“On-Chip Debug Unit“ on page 877
.
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