MB86967 Datasheet, PDF (72/129 Pages) Fujitsu Component Limited. – LAN Controller with PC Card, ISA Bus, and General-purpose Bus Interfaces

MB86967
s RESET, STANDBY, AND SHUTDOWN MODES
1. PC Card Mode
Interface
LAN Controller
Operation
Input of 1 to
external
reset register
• The CCR is initialized.
• The I/O card interface is switched to the IC memory
interface.
• The LAN controller and 10BASE-T transceiver are also
initialized.
CCR0 Bit 7
SRESET = 1
Same as above, except this bit not cleared
• The CCR is initialized.
• The I/O card interface is switched to the IC memory
interface.
• The LAN controller and 10BASE-T transceiver are also
initialized.
DLCR6 Bit 7
ENA DLC = 1
• The LAN controller is initialized.
The previous values of the control registers (DLCR,
MAR, and BMPR) in the LAN controller are retained.
• The TP or AUI transceiver is in the power-down mode.
CCR1 Bit 2 DLCR7 Bit 5 BMPR14 Bit 4
• Standby mode
PwrDwn = 1 STBY = 0* SHUT DWN MODE = 0 The clock stops and current consumption is reduced to
about 10%.
BMPR14 Bit 4
• Shutdown mode
SHUT DWN MODE = 1 _{Crystal oscillation stops and current consumption is}
reduced to about 1%.
* : The STBY bit of the DLCR7 is set automatically.
2. ISA Bus Mode
Input of 1 to external reset register
Write to reset registers: RES0 to RES7
(any values)
DLCR6 Bit 7
ENA DLC = 1
DLCR7 Bit 5 BMPR14 Bit 4
STBY = 0 SHUT DWN MODE = 0
BMPR14 Bit 4
SHUT DWN MODE = 1
Operation
• The LAN controller and 10BASE-T transceiver are initialized.
• The LAN controller and 10BASE-T transceiver are initialized but
BMPR16 and BMPR17 are not.
• The LAN controller is initialized.
The previous values of the control registers (DLCR, MAR, and
BMPR) in the LAN controller are retained.
• The TP transceiver is in the power-down mode.
• Standby mode
The clock stops and current consumption is reduced to about 10%.
• Shutdown mode
Crystal oscillation stops and current consumption is reduced to
about 1%.
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