R01UH0823EJ0100 Rev.1.00 Page 461 of 1823
Jul 31, 2019
RX23W Group 22. Multi-Function Pin Controller (MPC)
22.2.5 P3n Pin Function Control Registers (P3nPFS) (n = 0, 1)
—: Do not specify this value.
Address(es): P30PFS 0008 C158h, P31PFS 0008 C159h
b7 b6 b5 b4 b3 b2 b1 b0
— ISEL — PSEL[4:0]
Value after reset:
00000000
Bit Symbol Bit Name Description R/W
b4 to b0 PSEL[4:0] Pin Function Select These bits select the peripheral function. For individual pin functions,
see the tables below.
R/W
b5 — Reserved This bit is read as 0. The write value should be 0. R/W
b6 ISEL Interrupt Input Function Select 0: Not used as IRQn input pin
1: Used as IRQn input pin
P30: IRQ0 input switch (85/56 pins)
P31: IRQ1 input switch (85/56 pins)
R/W
b7 — Reserved This bit is read as 0. The write value should be 0. R/W
Table 22.6 Register Settings for Input/Output Pin Function in 85-Pin and 56-Pin
PSEL[4:0]
Settings
Pin
P30 P31
00000b
(initial value)
Hi-Z
00001b MTIOC4B MTIOC4D
00101b TMRI3 TMCI2
00111b POE8# —
01010b RXD1
SMISO1
SSCL1
—
01011b — CTS1#
RTS1#
SS1#
10000b CMPOB3 —
10111b AUDIO_MCLK SSISCK0
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