MB86967 Datasheet, PDF (74/129 Pages) Fujitsu Component Limited. – LAN Controller with PC Card, ISA Bus, and General-purpose Bus Interfaces

MB86967
4. Operation Sequence in PC Card Mode
Operable state
Power on
CCR0: SRESET = High
RESET pin = High
Write 1 to ENA DLC bit
of DLCR6.
Is crystal oscillation
NO
stabilized?
YES
CCR0: SRESET = Low
Is crystal oscillation
NO
stabilized?
YES
RESET pin = Low
Switch from IC memory card interface
to I/O card interface.
*²
Write 1 to PwrDwn bit
of CCR1.
Controller is in initialized state.
Set DLCR, MAR, and
BMPR registers.
BMPR14 Bit 4 = 0?
YES
Standby state
NO
*¹
NO
200 µs WAIT?
Shutdown state
Write 0 to ENA DLC bit
of DLCR6.
*³
Write 0 to PwrDwn bit
of CCR1.
*1: The time for setting the DLCR, MAR, and BMPR registers may be included in the waiting time of 200 µs.
*2: The STBY bit of DLCR7 is automatically set to 0.
*3: The STBY bit of DLCR7 is automatically set to 1.
In the PC card mode, the STBY bit of DLCR7 is set from the PwrDwn bit of CCR1 to as shown in *2 and *3. Direct
change (from 0 to 1 or from 1 to 0) is not allowed.
• Standby state: The clock to each circuit stops but crystal oscillation does not.
• Shutdown state: Crystal oscillation stops.
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