R1610C RDC Semiconductor, R1610C Datasheet - Page 51

• Manufacturer Part Number: R1610C
• Description: High Performance 16 Bits MCU Integrated One 10/100M Mac Controller - 3.3V Operating Voltage/2.5V Core Voltage
• Manufacturer: RDC Semiconductor

R
MAC, and TMR), the corresponding bit is set to 1 when the device requests an interrupt. The bit is reset during the
internally generated interrupt acknowledge. For INT2-INT0 external interrupts, the corresponding bits (I[3:0]) reflect
the current values of the external signals.
register is cleared by writing the corresponding interrupt type to the EOI register.
Data Sheet
Final Version 1.5
October 27, 2003
R
15-11
15-11
Register Offset:
Register Name:
Reset Value
Register Offset:
Register Name:
Reset Value
7-4
3-2
15
Bit
15
Bit
10
10
9
8
1
0
D
D
14
D1/I6 –
14
The Interrupt Request register is a read-only register. For internal interrupts (SP0, SP1, D1/I6, D0/I5,
These bits in this Register are set by the interrupt controller when the interrupt is taken. Each bit in the
Name
Name
D0/I5
Rsvd
MAC
I[3:0]
Rsvd
Rsvd
TMR
SP0
SP1
SP0
C
C
Reserved
Reserved
13
13
®
®
:
:
Attribute Description
Attribute
R
R
I
I
S
S
C
C
R/W
RO
RO
RO
RO
RO
RO
RO
RO
RO
2Eh
Interrupt Request Register
0000h
2Ch
In-Service Register
0000h
D
D
12
12
S
S
P
P
C
C
o
o
m
m
m
m
u
u
11
11
n
n
Reserved
Serial Port 0 Interrupt Request. Indicates the interrupt status of the serial port 0.
Serial Port 1 Interrupt Request. Indicates the interrupt status of the serial port 1.
MAC Interrupt Request. Indicates the interrupt status of MAC.
Interrupt Requests.
Set 1: The corresponding INT pin has an interrupt pending.
DMA Channel or INT Interrupt Request.
Set 1: The corresponding DMA channel or INT has an interrupt pending.
Reserved
Timer Interrupt Request. Set 1: The timer control unit has an interrupt pending.
Reserved
Serial Port 0 Interrupt In-Service.
Set 1: the serial port 0 interrupt is currently being serviced.
i
i
c
c
a
a
t
t
i
i
o
o
n
n
SP0
SP0
10
10
SP1
SP1
9
9
MAC
MAC
8
8
I3
I3
7
7
I2
I2
6
6
Description
I1
I1
5
5
I0
I0
4
4
Fast Ethernet RISC Processor
D1/I6
D1/I6
3
3
D0/I5
D0/I5
2
2
Rsvd
Rsvd
1
1
R1610C
TMR
TMR
0
0
51