DJLXT972ALC.A4 Cortina Systems Inc, DJLXT972ALC.A4 Datasheet - Page 76

• Manufacturer Part Number: DJLXT972ALC.A4
• Manufacturer: Cortina Systems Inc

Specifications of DJLXT972ALC.A4

• Lead Free Status / RoHS Status: Not Compliant

LXT972A PHY
Datasheet
249186, Revision 5.2
13 September 2007
Table 53
Cortina Systems
LED Configuration Register - Address 20, Hex 14 (Sheet 1 of 2)
®
20.15:12
20.11:8
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.
3. Combined event LED settings are not affected by Pulse Stretch register bit 20.1. These display settings
4. Duplex status is the primary LED driver. The LED is asserted (solid ON) when the link is full-duplex.
5. Values are approximations. Not guaranteed or production tested.
LXT972A Single-Port 10/100 Mbps PHY Transceiver
Bit
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.
are stretched regardless of the value of 20.1.
Collision status is the secondary LED driver. The LED changes state (blinks) when a collision occurs.
LED1
Programming
bits
LED2
Programming
bits
Name
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 =1010 = Test mode - blink LED fast (Continuous)
1011 = Test mode - blink LED slow (Continuous)
1100 = Display Link and Receive Status combined
1101 = Display Link and Activity Status combined
1110 = Display Duplex and Collision Status combined
1111 = Unused
0000 =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
1101 = Display Link and Activity Status combined
1110 = Display Duplex and Collision Status combined
1111 = Unused
(Stretched)
(Stretched)
(Stretched)
(Stretched)
(Stretched)
(Stretched)
3
3
3
3
3
3
Description
2
2
2
2
Product-Specific Registers
9.0 Register Definitions -
4
4
Type
R/W
R/W
1
Default
0000
0100
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