GMS30C7201 Datasheet, PDF (262/352 Pages) Hynix Semiconductor – 60MHz operation frequency Low power consumption

Slow AMBA Peripherals
request to the interrupt controller. All bits can be controlled separately.
P[A,B,C,D]IM
Interrupt Mask Register. Bits set in this 8-bit read/write register will select
the corresponding pin to become an interrupt source. All bits are cleared by
a system reset.
0 = disable interrupt (default)
1 = enable interrupt
P[A,B,C,D]IS
Interrupt Status Register. Values in this 8-bit read-only register represents
that the interrupt requests are pending on corresponding pins. All bits are
cleared by a system reset.
0 = no interrupt request
1 = interrupt pending
(masked interrupt is always 0)
P[A,B,C,D]IE
Edge Mode Register. Bits set in this 8-bit read/write register will select the
corresponding pin to become an edge mode interrupt source. All bits are
cleared by a system reset.
0 = level mode (default)
1 = edge mode
P[A,B,C,D]IC
Clear Register. Bits set in this 8-bit write-only register will clear the stored
interrupt request of corresponding bit in edge mode. All bits are
automatically cleared after written.
0 = no action (default)
1 = clear interrupt source (self reset)
P[A,B,C,D]IP
Polarity Register. Bits set in this 8-bit read/write register will select the
corresponding pin to become an active LOW mode interrupt source. All
bits are cleared by a system reset. After accessing this register, the Edge
Mode register should be cleared with the Clear register.
0 = active HIGH mode
1 = active LOW mode
TICR
TIC Mode Selection Register. This 1-bit write register will select TIC mode
for PORTC[7:0] and PORTD[6:4]. When set, the read of PDR returns the
value of the PDR register instead of external pin signals.This is for
production test purposes only. It should always be clear in normal
operation.
PMPSB
Multi-function Pin Selection Register for PORTB. Bits set in this 6-bit
read/write register will select the corresponding pin to become a PIO pin.
PMPSB
Value
Description
Bit 0
0
1
UVPO
PORTB bit[0]
Bit 1
0
1
UVMO
PORTB bit[1]
Bit 2
0
1
nUSBOE
PORTB bit[2]
Table 13-26: PIO multi-function pin selection for PORT B
13-34
GMS30C7201 Data Sheet