W89C841F Datasheet, PDF (19/102 Pages) Winbond – 3-IN - 1 10/100M FAST ETHERNET CONTROLLER

W89C841F/D
BootROM/Flash and EEPROM Interface, continued
SIGNAL NAME
BtOEB/
AuxPWR
PIN TYP.
I/O
PIN NO.
98
BtWEB/
EESel
I/O
97
PIN DESCRIPTION
BootROM Read Enable/
Auxiliary Power Detection
A. Normal mode and MAC mode
After power on latch, auxiliary power is automatically
detected by W89C841F. If auxiliary power is detected
to be high, wake-up event generation from D3(cold) to
D0 (uninitialized) state is supported.
B. PHYceiver mode
This pin should be pulled to low.
BootROM Write Enable/
EEPROM Type Select
A. Normal mode and MAC mode
After power on latch, EEPROM type is detected by
W89C841F. If it is high, EEPROM (93C56) is used for
CardBus application. Otherwise, EEPROM (93C46) is
used in PCI/Mini PCI application.
B. PHYceiver mode
This pin should be pulled to low.
Transceiver Interface
SIGNAL NAME
TP/FXOP
TP/FXON
TP/FXIP
TP/FXIN
OSC/X1
X2
PIN TYP.
O
O
I
I
I
O
VREF
I
RTX
I
CONTROL
O
PIN NO.
82
83
85
86
96
95
91
90
92
PIN DESCRIPTION
Twist Pair / Fiber Transmit Output Positive
Twist Pair / Fiber Transmit Output Negative
Twist Pair / Fiber Receive input Positive
Twist Pair / Fiber Receive input Negative
25 MHz Crystal/OSC clock input
Crystal Output
Left unconnected when oscillator is chosen for X1
input.
RC input for Bias.
RC input for Transmitter.
2.5V Regulator Control Output
Drive current below 10 mA.
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Publication Release Date: October 18, 2001
Revision A3