AX88190P Datasheet, PDF (14/41 Pages) ASIX Electronics Corporation – 10/100BASE PCMCIA Fast Ethernet MAC Controller

AX88190
PCMCIA Fast Ethernet MAC Controller
4.1.1 Configuration Option Register of LAN (LCOR) Offset 3C0H (Read/Write)
FIELD
7
6
5:0
R/W/C
R/W
R/W
R/W
DESCRIPTION
Software Reset
Assert this bit will reset the LAN function of AX88190. Return a 0 to this bit will leave the
LAN function of AX88190 in a post-reset state as same as that following a hardware reset.
The value of this bit is 0 at power-on.
Level IRQ
This bit should be set to 1, the AX88190 always generates Level Mode Interrupt.
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, Bit 4 : MODEM I/O base registers
Bit 5
Bit 4
MODEM I/O base
0
0
Decided by MIOBASE registers ( See section 4.2.3 )
0
1
2f8H
1
0
3e8H
1
1
2e8H
Bit 3 : Enable Power Down mode
If bit 0 of LCOR is set to 0, this bit is ignored.
If bit 0 of LCOR is set to 1 and this bit is set to 1, the LAN will go into power down
mode. At power down mode AX88190 will disable MAC transmitting and receiving
operation. But the host interface will not be affected.
Bit 2 : Enable IREQ# Routing
If bit 0 of LCOR is set to 0, this bit is ignored.
If bit 0 of LCOR is set to 1 and this bit is set to 1, the LAN will generate interrupt request
via IREQ# signal. If this bit is set to 0, the LAN will not generate interrupt request via
IREQ# line.
Bit 1 : Enable Base and Limit Registers
If bit 0 of LCOR is set to 0, this bit is ignored.
If bit 0 of LCOR 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 LAN 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 LAN function is disabled.
If this bit is set to 1, the LAN function is enabled.
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