MB86967 Datasheet, PDF (66/129 Pages) Fujitsu Component Limited. – LAN Controller with PC Card, ISA Bus, and General-purpose Bus Interfaces

MB86967
(4) Write to CCR
Mode
Byte access
(8 bits)
Word access
(16 bits)
PD8
Address REG CE2 CE1 OE IOWR WE PA0 to
PD15
0
Don’t
care
0 1 01 1 0
7F0H to
7F6H
1
Don’t
care
0
0 01
1
0
×
Don’t
care
PD0
to ROMS ROMRD ROMAD
PD7
Even
byte
H
H
L
Don’t
care
H
H
L
Even
byte
H
H
L
6. LAN Card Configuration Register
(1) CCR0: Card Configuration Option Register (00007F0H)
The card configuration option register (CCR0) sets a software reset, interrupt signal, and configuration index.
Read
Write
Initial Value
Bit 7
SRESET
0
Bit 6
LevIREQ
—
1
Bit 5
0
Bit 4
0
Bit 3
Bit 2
Configuration index
0
0
Bit 1
0
Bit 0
0
Bit no. Bit name Operation
7 SRESET
Read/Write
(Software Reset)
6
5 to 0
LevIREQ
(Level Interrupt
Request)
CONF INDX
(Configuration
Index)
Read
Read/Write
Value
0
1
—
—
Function
When 0 is written to this bit, the MB86967 enters the
hardware reset state or the same state as that after hardware
reset.
Reset state; this is the same as the hardware reset state
except that this bit is not cleared.
When this bit is set, the pointers and registers in the LAN
controller are also reset.
Since the MB86967 is in the level interrupt request mode, 1 is
always read in the I/O interface card mode. This bit is not
affected by writing.
These bits are used to select 32 configuration indexes
provided for the card.
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