RTL8201BL
UTP mode and MII interface
ANE
SPEED
DUPLEX
Operation
(Pin 37)
(Pin 39)
(Pin 38)
Auto-negotiation enable, the ability field does not support 100Mbps and full duplex
mode operation
Auto-negotiation enable, the ability field does not support 100Mbps operation
Auto-negotiation enable, the ability field does not support full duplex mode operation
Default setup, auto-negotiation enable, the RTL8201BL will support 10BaseT
/100BaseTX, half/full duplex mode operation
Auto-negotiation disable, force the RTL8201BL into 10BaseT and half duplex mode
Auto-negotiation disable, force the RTL8201BL into 10BaseT and full duplex mode
Auto-negotiation disable, force the RTL8201BL into 100BaseTX and half duplex mode
Auto-negotiation disable, force the RTL8201BL into 100BaseTX and full duplex mode
H
L
L
H
H
L
H
H
L
H
H
H
L
L
L
L
L
L
H
H
L
H
L
H
UTP mode and SNI interface
SNI interface to MAC. It only works in 10Base-T when the SNI interface is enabled.
ANE
(Pin 37)
X
SPEED
(Pin 39)
X
DUPLEX
(Pin 38)
L
Operation
The duplex pin is pulled low to support the 10Base-T half duplex function.10Base-T
half duplex is the specified default mode in the SNI interface.
The RTL8201BL also supports full duplex in SNI mode. The duplex pin is pulled high
to support 10Base-T full duplex function.
X
X
H
Fiber mode and MII interface
The RTL8201BL only supports 100Base-FX when Fiber mode is enabled. Ignore ANE and Speed hardwire configuration.
ANE
(Pin 37)
X
SPEED
(Pin 39)
X
DUPLEX
Operation
(Pin 38)
H
L
The duplex pin is pulled high to support 100Base-FX full duplex function.
The duplex pin is pulled low to support 100Base-FX half duplex function.
X
X
7.3 Flow control support
The RTL8201BL supports flow control indications. The MAC can program the MII register to indicate to the PHY that flow
control is supported. When MAC supports the Flow Control mechanism, setting bit 10 of the ANAR register by MDC/MDIO
SMI interface, then the RTL8201BL will add the ability to its N-Way ability. If the Link partner also supports Flow Control,
then the RTL8201BL can recognize the Link partner’s N-Way ability by examining bit 10 of ANLPAR (register 5).
7.4 Hardware Configuration and Auto-negotiation
This section describes methods to configure the RTL8201BL and set the auto-negotiation mode. This list will show the various
pins and their setting to provide the desired result.
1) Isolate pin: Set high to isolate the RTL8201BL from the MAC. This will also isolate the MDC/MDIO management
interface. In this mode, power consumption is minimum. Please refer to the section covering Isolation mode and Power
Down mode.
2) RPTR pin: Pull high to set the RTL8201BL into repeater mode. This pin is pulled low by default. Please refer to the
section covering Repeater mode operation.
3) LDPS pin: Pull high to set the RTL8201BL into LDPS mode. This pin is pulled low by default. Please refer to the section
covering Power Down mode and Link Down Power Saving.
2002-03-29
Rev.1.2
16
ETC [ ETC ]
