
CHAPTER
4
P
O
RT
FU
NCTI
O
NS
User’s
Manual
U1
7790EJ2V0UD
193
Table 4-19. Using Port Pin as Alternate-Function Pin (6/9)
Alternate Function
Pin Name
Name
I/O
Pnx Bit of
Pn Register
PMnx Bit of
PMn Register
PMCnx Bit of
PMCn Register
PFCEnx Bit of
PFCEn Register
PFCnx Bit of
PFCn Register
Other Bits
(Registers)
A0
Output
P90 = Setting not required
PM90 = Setting not required
PMC90 = 1
PFCE90 = 0
PFC90 = 0
Note 1
KR6
Input
P90 = Setting not required
PM90 = Setting not required
PMC90 = 1
PFCE90 = 0
PFC90 = 1
TXDA1
Output
P90 = Setting not required
PM90 = Setting not required
PMC90 = 1
PFCE90 = 1
PFC90 = 0
P90
SDA02
I/O
P90 = Setting not required
PM90 = Setting not required
PMC90 = 1
PFCE90 = 1
PFC90 = 1
PF90 (PF9) = 1
A1
Output
P91 = Setting not required
PM91 = Setting not required
PMC91 = 1
PFCE91 = 0
PFC91 = 0
Note 1
KR7
Input
P91 = Setting not required
PM91 = Setting not required
PMC91 = 1
PFCE91 = 0
PFC91 = 1
RXDA1/KR7
Note 2
Input
P91 = Setting not required
PM91 = Setting not required
PMC91 = 1
PFCE91 = 1
PFC91 = 0
P91
SCL02
I/O
P91 = Setting not required
PM91 = Setting not required
PMC91 = 1
PFCE91 = 1
PFC91 = 1
PF91 (PF9) = 1
A2
Output
P92 = Setting not required
PM92 = Setting not required
PMC92 = 1
PFCE92 = 0
PFC92 = 0
Note 1
TIP41
Input
P92 = Setting not required
PM92 = Setting not required
PMC92 = 1
PFCE92 = 0
PFC92 = 1
P92
TOP41
Output
P92 = Setting not required
PM92 = Setting not required
PMC92 = 1
PFCE92 = 1
PFC92 = 0
A3
Output
P93 = Setting not required
PM93 = Setting not required
PMC93 = 1
PFCE93 = 0
PFC93 = 0
Note 1
TIP40
Input
P93 = Setting not required
PM93 = Setting not required
PMC93 = 1
PFCE93 = 0
PFC93 = 1
P93
TOP40
Output
P93 = Setting not required
PM93 = Setting not required
PMC93 = 1
PFCE93 = 1
PFC93 = 0
A4
Output
P94 = Setting not required
PM94 = Setting not required
PMC94 = 1
PFCE94 = 0
PFC94 = 0
Note 1
TIP31
Input
P94 = Setting not required
PM94 = Setting not required
PMC94 = 1
PFCE94 = 0
PFC94 = 1
P94
TOP31
Output
P94 = Setting not required
PM94 = Setting not required
PMC94 = 1
PFCE94 = 1
PFC94 = 0
A5
Output
P95 = Setting not required
PM95 = Setting not required
PMC95 = 1
PFCE95 = 0
PFC95 = 0
Note 1
TIP30
Input
P95 = Setting not required
PM95 = Setting not required
PMC95 = 1
PFCE95 = 0
PFC95 = 1
P95
TOP30
Output
P95 = Setting not required
PM95 = Setting not required
PMC95 = 1
PFCE95 = 1
PFC95 = 0
Notes 1. When setting pins A0 to A15 as the alternate function, set the PMC9 register to FFFFH for all 16 bits at once.
2. The RXDA1 and KR7 pins must not be used at the same time. When using the RXDA1 pin, do not use the KR7 pin. When using the KR7 pin, do not use
the RXDA1 pin (it is recommended to set the PFC91 bit to 1 and clear the PFCE91 bit to 0).