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DP83849IF bảng dữ liệu(PDF) 74 Page - National Semiconductor (TI) |
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DP83849IF bảng dữ liệu(HTML) 74 Page - National Semiconductor (TI) |
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74 / 108 page ![]() 74 www.national.com 7.2.7 10 Base-T Status/Control Register (10BTSCR) This register is used for control and status for 10BASE-T device operation. 6 5 LED_CNFG[1] LED_CNFG[0] 0, RW Strap, RW LED Configuration In Mode 1, LEDs are configured as follows: LED_LINK = ON for Good Link, OFF for No Link LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s LED_ACT/LED_COL = ON for Activity, OFF for No Activity In Mode 2, LEDs are configured as follows: LED_LINK = ON for good Link, BLINK for Activity LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s LED_ACT/LED_COL = ON for Collision, OFF for No Collision Full Duplex, OFF for Half Duplex In Mode 3, LEDs are configured as follows: LED_LINK = ON for Good Link, BLINK for Activity LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s LED_ACT/LED_COL = ON for Full Duplex, OFF for Half Duplex 4:0 PHYADDR[4:0] Strap, RW PHY Address: PHY address for port. Table 39. 10Base-T Status/Control Register (10BTSCR), address 1Ah Bit Bit Name Default Description 15 10BT_SERIAL Strap, RW 10Base-T Serial Mode (SNI) 1 = Enables 10Base-T Serial Mode 0 = Normal Operation Places 10 Mb/s transmit and receive functions in Serial Network Interface (SNI) Mode of operation. Has no effect on 100 Mb/s operation. 14:12 RESERVED 0, RW RESERVED: Must be zero. 11:9 SQUELCH 100, RW Squelch Configuration: Used to set the Squelch ‘ON’ threshold for the receiver. Default Squelch ON is 330mV peak. Table 38. PHY Control Register (PHYCR), address 19h (Continued) Bit Bit Name Default Description LED_CNFG[1] LED_ CNFG[0] Mode Description Don’t care 1 Mode 1 00 Mode 2 10 Mode 3 |
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