MFC2000 datasheet(80/426 Pages) ETC

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MFC2000 Multifunctional Peripheral Controller 2000

Hardware Description

4-50

Conexant

100723A

4.4.2.2

IRQ/FIQ Event2 Register

Address:

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default:

IRQFIQEvent2

0x01FF8023

(Not

Used)

(Not Used)

Rst Value

xxh

Read Value

00h

Address:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default:

IRQFIQEvent2

0x01FF8022

(Not

Used)

IRQ22

irqusb

Event

Status

IRQ21

irqtimer2

Event

Status

IRQ20

irqsdaa

Event

Status

IRQ19

irqdma5

Event

Status

IRQ18

irqssif

Event

Status

IRQ17

irqsw

Event

Status

IRQ16

irqsys

Event

Status

Rst Value

x0000000b

Read Value

00h

Bit 6

Internal USB interrupt from USB block. Read only.

Bit 5

Internal timer 2 interrupt up to 50 ms. Read only.

Bit 4

Internal SmartDAA interface interrupt from SmartDAA IF block. Read

only.

Bit 3

Internal DMA channel 5 interrupt from DMA controller block. Read

only.

Bit 2

Internal SSIF from SSIF block. Read only.

Bit 1

Internal Software interrupt. When CPU writes a 1, the software

interrupt is issued. When CPU writes a 0, the software interrupt is

cleared. R/W.

Bit 0

Internal system interrupt from programmable external interrupt 16 or

power down circuit Read only.

4.4.2.3

IRQ Enable1 Register

Address:

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default:

IRQEnable1

0x01FF8025

Enable

IRQ15

irqsopif

Enable

IRQ14 irqt4

Enable

IRQ13

irqext2

Enable

IRQ12

irqpio

Enable

IRQ11

irqext1

Enable

IRQ10

irqtimer1

Enable

IRQ9

irqvsc

Enable

IRQ8

irqdma10

Rst Value

00h

Read Value

00h

Address:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default:

IRQEnable1

0x01FF8024

Enable

IRQ7

irqbrc

Enable

IRQ6

irqdma2

Enable

IRQ5

irqsasif

Enable

IRQ4

irqvpstep

Enable

IRQ3

irqsstep

Enable

IRQ2

irqprt

Enable

IRQ1

irqcbs

Enable

IRQ0 MIRQ

Rst Value

00h

Read Value

00h

Bit 15 – 0:

When 1 will enable the corresponding interrupt and when 0 will mask

that interrupt out. R/W.

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