AX88190AL datasheet(17/49 Pages) ASIX

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AX88190A

PCMCIA Fast Ethernet MAC Controller

ASIX ELECTRONICS CORPORATION

4.2 PCMCIA Function Configuration Register Set of MODEM

NAME

OFFSET

MCOR

CONFIGURATION OPTION REGISTER

3E0H

MCSR

CONFIGURATION AND STATUS REGISTER

3E2H

MIOBASE0

I/O BASED REGISTER 0

3EAH

MIOBASE1

I/O BASED REGISTER 1

3ECH

Tab - 14 PCMCIA Function Configuration Register Mapping of MODEM

4.2.1 Configuration Option Register of MODEM (MCOR) Offset 3E0H (Read/Write)

FIELD

R/W/C

DESCRIPTION

R/W

Software Reset

Assert this bit will reset the MODEM function of AX88190A. Return a 0 to this bit will

leave the MODEM function of AX88190A in a post-reset state as same as that following

a hardware reset. The value of this bit is 0 at power-on.

R/W

Level IRQ

This bit should be set to 1, the AX88190A always generates Level Mode Interrupt.

5:0

R/W

Function Configuration Index

These six bits are used to indicate entry of the card configuration table locate in the CIS.

The default value is 0

On multifunction PC Card,

Bit 5, Bit4 : Reserved

Bit 3 : MINT route to STSCHG#

If bit 0 of MCOR is set to 0, this bit is ignored.

If both bit 0 and bit 2 of MCOR are set to 1 and this bit is set to 1, the MODEM will route

interrupt request to STSCHG# signal. If this bit is set to 0, the MODEM will generate

interrupt request via IREQ# line.

Bit 2 : MINT route to IREQ# (Enable IREQ# Routing)

If bit 0 of MCOR is set to 0, this bit is ignored.

If bit 0 of MCOR is set to 1 and this bit is set to 1, the MODEM will generate interrupt

request via IREQ# signal. If this bit is set to 0, the MODEM will not generate interrupt

request via IREQ# line.

Bit 1 : Enable Base and Limit Registers

If bit 0 of MCOR is set to 0, this bit is ignored.

If bit 0 of MCOR is set to 1 and this bit is set to 1,only I/O addresses that are qualified

by the Base and Limit registers are passed to MODEM function. If this bit is set to 0,all

I/O addresses are passed to LAN function.

Bit 0 : Enable Function

If this bit is set to 0, the MODEM function is disabled.

If this bit is set to 1, the MODEM function is enabled.

AX88190AL Datasheet(PDF) 17 Page - ASIX Electronics Corporation

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