RTL8208 Ver la hoja de datos (PDF) - Realtek Semiconductor
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RTL8208 Datasheet PDF : 40 Pages
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RTL8208
5.7 Mode Control Pins
Pin Name
SEL_TXFX[1:0]/
CRS_DV[1:0]
PP-LPBK mode
/ RX_SYNC
PHY_ADDR[4:3]/
RXD1[4:3]
MODE[1:0]/
CRS_DV[6:7]
TP_PAUSE/
CRS_DV[5]
FX_PAUSE/
CRS_DV[3]
FX_DUPLEX/
CRS_DV[2]
EN_AUTOXOVER
/RXD1[7]
DISBLINK/
RXD1[6]
LED_BLNK_TIME/
RXD1[5]
LEDMODE[1:0]
Pin
99,107
81
73,83
61,53
67
85
93
51
59
65
49,50
Type Description
I/O, Select 10/100BaseTX or 100BaseFX: (default = 2’b00)
(Pd,Pd) If RPT_MODE = 0:
2’b00: All 8 ports (port0~port7) are 10Base-T/100Base-TX.
2’b01: Port 7 is 100FX, other ports are 10Base-T/100Base-TX.
2’b10: Ports 6 & 7 are 100FX, other ports are 10Base-T/100Base-TX.
2’b11: All 8 ports are 100Base-FX.
If RPT_MODE =1:
2’b00: All 8 ports (port0~port7) are 10Base-T/100Base-TX.
2’b01: Port 7 and 5 are 100FX, others are 10Base-T/100Base-TX.
2’b10: Ports 1,3,5&7 are 100FX, others are 10Base-T/100Base-TX.
2’b11: All 8 ports are 100Base-FX.
I/O, Port Pair Loop Back mode: (default =0)
(Pd) Upon power-on reset, this pin is input to assert PP-LPBK mode. When
set, all eight ports are port-pair looped back, acting like a signal
regeneration/transformation repeater.
Refer to the section covering PP-LPBK mode.
I/O, PHY Address: (default = 2’b01) These 2bits determine the highest
(Pd,Pu) 2bits of 5-bit PHY address upon reset.
I/O, Select RMII/SMII/SS-SMII mode: (default = 2’b11)
(Pu,Pu) 2’b1x: RMII
2’b00: SMII
2’b01: SS-SMII
I/O, Twisted Pair Pause capability: (default =1) Sets the Flow control
(Pu) ability of Reg.4.10 for UTP ports upon power-on reset.
1: With flow control ability.
0: Without flow control ability
I/O, 100Base-FX Flow control capability: (default =1) Forces the flow
(Pu) control capability of Reg.4.10 and Reg.5.10 upon power-on reset.
1: With flow control ability in 100Base-FX.
0: Without flow control ability in 100Base-FX.
I/O, FX_DUPLEX: Force 100Base-FX Full Duplex Mode: (default =1)
(Pu) 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.
I/O, Enable Auto Crossover Detection: (default =1)
(Pu) 1: Enable auto crossover detection
0: Disable auto crossover detection
I/O, Disable power-on reset LEDs blinking: (default = 0)
(Pd) 1=Disable power-on LED blinking
0=blink.
I/O, LED blink time: (default =1) Used to control blinking speed of
(Pu) activity and collision LEDs.
1= 43ms
0= 120ms
I, LEDMODE[1:0]: (default = 00) Controls the forms of serial LED status.
(Pd,Pd)
LEDMODE Mode
Output
2’b00
3-bit serial stream
Col/Fulldup, Link/Act, Spd
2’b01
2-bit serial stream
Spd, Link/Act
2’b10
3-bit for Bi-color LED Col/Fulldup, Link/Act, Spd
See LED operation mode section for more information.
2003/04/04
10
Rev.1.97
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