RTL8208B-LF/RTL8208BF-LF
Datasheet
Pin Name
Pin
Type
Description
FX_ASY_PAUSE/
RXD1[4]
76
I/O, (Pd) 100Base-FX Asymmetric Flow control capability (default =0).
Forces the asymmetric flow control capability of Reg.4.11 and
Reg.5.11 upon power-on reset.
1: Asymmetric flow control ability in 100Base-FX
0: No asymmetric flow control ability in 100Base-FX
Note: RTL8208BF-LF only.
FX_DUPLEX/
CRS_DV[2]
93
I/O, (Pu) FX_DUPLEX: Force 100Base-FX Full Duplex Mode (default =1).
This pin sets 100Base-FX duplex and affects those ports in
100Base-FX mode.
1: Full duplex
0: Half duplex
Upon reset, this pin sets the default values of Reg.0.8 of those ports in
100Base-FX.
Note: RTL8208BF-LF only.
EN_AUTOXOVER/
RXD1[1]
97
91
71
I/O, (Pu) Enable Auto Crossover Detection (default =1).
1: Enable auto crossover detection
0: Disable auto crossover detection
I/O, (Pd) Disable power-on/reset LED blinking: (default = 0)
1: Disable power-on LED blinking
DISBLINK/
RXD1[2]
0: Blink
LED_BLNK_TIME/
RXD0[5]
I/O, (Pu) LED Blink Time (default =1).
Controls the blinking speed of activity and collision LEDs.
1: 43ms (recommended to use external 10K pull up resistor)
0: 120ms
LEDSEL/RXD1[3]
83
I/O, (Pd) LED Selection (default=1’b0).
LEDSEL
1’b1: Scan LED
1’b0: Serial LED
LEDMODE[1:0]/
RXD0[2:1]
92, 98
I/O,
LEDMODE[1:0] (default = 00).
(Pd, Pd) When using the RTL8208B(F)-LF LED solution , we recommend using
an external resister to pull high or pull low.
In Serial LED, LEDMODE[1:0] controls the forms of serial LED status.
LEDMODE Mode
Output
2’b00
2’b01
2’b10
2’b11
3-bit serial stream
2-bit serial stream
3-bit for Bi-color LED Col/Fulldup, Link/Act, Spd
1-bit serial stream Link/Act/Spd
Col/Fulldup, Link/Act, Spd
Spd, Link/Act
In Scan LED, LEDMODE[1:0] controls the output of
SCAN_STATUS[2:0].
LEDMODE Mode
Output
2’b00
2’b01
2’b10
2’b11
Mode 0
Mode 1
Mode 2
Reserved
Col/Fulldup, Link/Act, Spd
RX, TX, Link
NC, Bi-color Link/Act/Spd, NC
FRC_PARA_FULL/
RXD0[6]
63
I/O
(Pd)
Force full duplex when link is established by parallel detection
(default=0).
1: Force full duplex when link is established by parallel detection
0: Normal operation
Single-Chip Octal 10/100-TX/FX PHY Transceiver
11
Track ID: JATR-1076-21 Rev. 1.3
REALTEK [ Realtek Semiconductor Corp. ]
