DM9008 Ver la hoja de datos (PDF) - Davicom Semiconductor, Inc.

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DM9008

ISA/Plug & Play Super Ethernet Contoller

Davicom Semiconductor, Inc. 

Interrupt Line Status Register

DM9008

ISA/Plug & Play Super Ethernet Contoller

The logic value of DM9008's eight interrupt pins can be read in register 09H of ENC, page 2.

7

IRQ15

6

IRQ12

5

IRQ11

4

IRQ10

3

IRQ9

2

IRQ5

1

IRQ4

0

IRQ3

Bit

0-7

Symbol

IRQ3-15

Description

INTERRUPT LINE STATUS: The logic values of interrupt pins IRQ3-15

Interrupt Line Pull-Down Register

When any one of the eight bits in register 09H of ENC page 2 is set to one, the corresponding interrupt line will be pulled down to GND

with a resistor whose value is approximately 1K. All bits of this register are power-on low.

7

6

5

4

3

IRQPD15 IRQPD12 IRQPD11 IRQPD10 IRQPD9

2

IRQPD5

1

IRQPD4

0

IRQPD3

Bit

0-7

Symbol

Description

IRQPD3-15 INTERRUPT LINE PULL-DOWN: When one, enables the interrupt line to be pulled down

with 1K resistor

Boot ROM Page Register

The boot ROM page register can be read or written in register 0AH of ENC page 2.

All bits of this register are power-on low.

7

6

5

4

3

2

XMA8

XMA7

XMA6

XMA5

XMA4

XMA3

1

XMA2

0

XMA1

Bit

0-7

Symbol

XMA1-8

Description

BOOT ROM PAGE ADDRESS: When boot ROM is read by host, the value of this register will

be indicated by MEMORY ADDRESS PA0-7

14

Final

Version: DM9008-DS-F02

November 30, 2000

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