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FAIXE972MLCA4 Datasheet(PDF) 87 Page - Intel Corporation |
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FAIXE972MLCA4 Datasheet(HTML) 87 Page - Intel Corporation |
87 / 92 page Intel ® LXT972M Single-Port 10/100 Mbps PHY Transceiver Datasheet 87 Document Number: 302875-005 Revision Date: 27-Oct-2005 Table 54 lists LED configuration bits. Table 54. LED Configuration Register - Address 20, Hex 14 (Sheet 1 of 2) Bit Name Description Type 1 Default 20.15:12 LED1 Programming bits 0000 = Display Speed Status (Continuous, Default) 0001 = Display Transmit Status (Stretched) 0010 = Display Receive Status (Stretched) 0011 = Display Collision Status (Stretched) 0100 = Display Link Status (Continuous) 0101 = Display Duplex Status (Continuous) 0110 = Unused 0111 = Display Receive or Transmit Activity (Stretched) 1000 = Test mode - turn LED on (Continuous) 1001 = Test mode - turn LED off (Continuous) 1010 = Test mode - blink LED fast (Continuous) 1011 = Test mode - blink LED slow (Continuous) 1100 = Display Link and Receive Status combined 2 (Stretched) 3 1101 = Display Link and Activity Status combined 2 (Stretched) 3 1110 = Display Duplex and Collision Status combined 4 (Stretched) 3 1111 = Unused R/W 0000 20.11:8 LED2 Programming bits 0000 = Display Speed Status 0001 = Display Transmit Status 0010 = Display Receive Status 0011 = Display Collision Status 0100 = Display Link Status (Default) 0101 = Display Duplex Status 0110 = Unused 0111 = Display Receive or Transmit Activity 1000 = Test mode - turn LED on 1001 = Test mode - turn LED off 1010 = Test mode - blink LED fast 1011 = Test mode - blink LED slow 1100 = Display Link and Receive Status combined 2 (Stretched)3 1101 = Display Link and Activity Status combined 2 (Stretched)3 1110 = Display Duplex and Collision Status combined 4 (Stretched)3 1111 = Unused R/W 0100 1. R/W = Read /Write. RO = Read Only. LH = Latching High 2. Link status is the primary LED driver. The LED is asserted (solid ON) when the link is up. The secondary LED driver (Receive or Activity) causes the LED to change state (blink). Activity causes the LED to blink, regardless of the link status. 3. Combined event LED settings are not affected by Pulse Stretch Register bit 20.1. These display settings are stretched regardless of the value of 20.1. 4. Duplex status is the primary LED driver. The LED is asserted (solid ON) when the link is full-duplex. Collision status is the secondary LED driver. The LED changes state (blinks) when a collision occurs. 5. Values are approximations. Not guaranteed or production tested. |
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