W89C841F Datasheet, PDF (18/102 Pages) Winbond – 3-IN - 1 10/100M FAST ETHERNET CONTROLLER

W89C841F/D
BootROM/Flash and EEPROM Interface, continued
SIGNAL NAME PIN TYP. PIN NO.
BtData[4]
I/O
103
BtData[3]/
SELFX
I/O/
104
I
BtData[2]/
EEDO/
PHY_Duplex
I/O/
105
O
BtData[1]/
EEDI
BtData[0]/
EECK
EECS
BtCSB
I/O
106
I/O
107
O
108
O
99
PIN DESCRIPTION
BootROM Data[4]
A. Normal mode
This pin is used as ROM data pin.
B. PHYceiver mode and MAC mode
This pin should be pulled to low.
BootROM Data[3]
This pin is used as ROM data pin
FX/TX Selection
When power-on, this pin is used as input pin to latch
the setting value of SELFX.
1: FX mode
0: TX mode
BootROM Data[2]/
EEPROM Data Output (Normal mode and MAC mode)
This is pin is used for BootROM data pin or EEPROM
data output dependent on the bit EESEL of register
Dc4/DEEAR.
PHY_DUPLEX (PHYceiver mode)
This pin output the PHYceiver duplex status.
1: Half Duplex
0: Full Duplex
BootROM Data[1]/
EEPROM Data Input
This is pin is used for BootROM data signal or
EEPROM data input dependent on the bit EESEL of
register Dc4/DEEAR.
BootROM Data[0]/
EEPROM Data Clock
This is pin is used for BootROM data signal or
EEPROM data clock dependent on the bit EESEL of
register Dc4/DEEAR.
EEPROM Chip Select
BootROM Chip Select
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