425
Section 15 Pin Function Controller (PFC)
15.1
Overview
The pin function controller (PFC) is composed of registers for selecting the function of
multiplexed pins and the direction of input/output. The pin function and input/output direction can
be selected for each pin individually without regard to the operating mode of the chip. Table 15.1
lists the multiplexed pins.
Table 15.1
List of Multiplexed Pins
Port
Function 1
(Related Module)
Function 2
(Related Module)
Function 3
(Related Module)
Function 4
(Related Module)
Pin No.
(FP-112)
Pin No.
(TFP-120)
A
PA15 I/O (port)
IRQ3
input (INTC)
DREQ1
input
(DMAC)
—
69
74
A
PA14 I/O (port)
IRQ2
input (INTC)
DACK1 output (DMAC) —
68
*
3
73
*
3
A
PA13 I/O (port)
IRQ1
input (INTC)
TCLKB input (ITU)
DREQ0
input (DMAC)
67
72
A
PA12 I/O (port)
IRQ0
input (INTC)
TCLKA input (ITU)
DACK0 output (DMAC) 66
*
3
71
*
3
A
PA11 I/O (port)
DPH I/O (D bus)
TIOCB1 I/O (ITU)
—
65
70
A
PA10 I/O (port)
DPL I/O (D bus)
TIOCA1 I/O (ITU)
—
64
69
A
PA9 I/O (port)
AH
output (BSC)
ADTRG
input (A/D)
IRQOUT
output (INTC) 63
68
A
PA8 I/O (port)
BREQ
input (system)
—
—
62
67
A
PA7 I/O (port)
BACK
output (system)
—
—
60
65
A
PA6 I/O (port)
RD
output (BSC)
—
—
59
64
A
PA5 I/O (port)
WRH
output (BSC)
(
LBS
output (BSC))
*
1
—
—
58
63
A
PA4 I/O (port)
WRL
output (BSC)
(
WR
output (BSC))
*
1
—
—
57
62
A
PA3 I/O (port)
CS7
output (BSC)
WAIT
input (BSC)
—
56
59
A
PA2 I/O (port)
CS6
output (BSC)
TIOCB0 I/O (ITU)
—
55
58
A
PA1 I/O (port)
CS5
output (BSC)
RAS
output (BSC)
—
54
57
A
PA0 I/O (port)
CS4
output (BSC)
TIOCA0 I/O (ITU)
—
53
56
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