RTL8208B-LF/RTL8208BF-LF
Datasheet
5.5. SMI (Serial Management Interface)
Table 6. SMI (Serial Management Interface)
Pin Name
Pin
Type Description
MDIO
111
I/O,
(Pu)
Management Data I/O. Bi-directional data interface. A 1.5KΩ pull-
up resistor is required (as specified in IEEE802.3u).
The MAC controller access of the MII registers should be delayed at
least 700µs after completion of the reset because of the internal reset
operation of the RTL8208B(F)-LF.
Pin driver capacity = 8mA.
MDC
112
I, (Pd) Management Data Clock. 0 to 2.5MHz clock sourced by MAC to
sample MDIO.
The MAC controller access of the MII registers should be delayed at
least 700µs after completion of the reset because of the internal reset
operation of the RTL8208B(F)-LF.
5.6. LED Pins
Table 7. LED Pins
Pin Name
Pin
Type Description
SCAN_LED[7:0]
41, 42, 43,
O
In scan LED mode, SCAN_LED[7:0] is the Scan LED port enable.
44, 45, 48, (Pu) See section 7.9 LED Configuration, page 38.
49, 50
114, 115,
116
All pins driver capacity = 8mA.
In scan LED mode, SCAN_STATUS[2:0] outputs (Col/Fulldup,
(Pu) Link/Act, Spd) for each port.
SCAN_STATUS[2:0]
O
LED_CLK/SCAN_
STATUS[0]
In serial LED mode, SCAN_STATUS[0] is used as LED_CLK,
which outputs the reference clock for the serial LED signals.
LED_DATA/SCAN_
STATUS[1]
In serial LED mode, SCAN_STATUS[1] is used as LED_DATA,
which outputs serial status bits that can be shifted into a shift register
to be displayed via LEDs. LED_DATA is output synchronously to
LED_CLK.
All pins driver capacity = 8mA.
Single-Chip Octal 10/100-TX/FX PHY Transceiver
9
Track ID: JATR-1076-21 Rev. 1.3
REALTEK [ Realtek Semiconductor Corp. ]
