WJLXT972MLC.A4 S L7U9 Intel, WJLXT972MLC.A4 S L7U9 Datasheet - Page 88

• Manufacturer Part Number: WJLXT972MLC.A4 S L7U9
• Manufacturer: Intel

Specifications of WJLXT972MLC.A4 S L7U9

• Lead Free Status / RoHS Status: Compliant

Intel
88
Table 54. LED Configuration Register - Address 20, Hex 14 (Sheet 2 of 2)
Table 55. Digital Configuration Register - Address 26, Hex 1A
®
LXT972M Single-Port 10/100 Mbps PHY Transceiver
Table 55
20.7:4
20.3:2
20.1
20.0
26.15:12
26.11
26.10
26.9
26.8:0
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.
1. R/W = Read /Write, RO = Read Only
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.
Bit
lists digital configuration bits for the LXT972M Transceiver.
LED3
Programming
bits
LEDFREQ
PULSE-
STRETCH
Reserved
Reserved
MII Drive Strength
Reserved
Show Symbol Error
Reserved
Name
5
Name
0000 = Display Speed Status
0001 = Display Transmit Status
0010 = Display Receive Status (Default)
0011 = Display Collision Status
0100 = Display Link Status
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
(Stretched)
1101 = Display Link and Activity Status combined
(Stretched)
1110 = Display Duplex and Collision Status combined
(Stretched)
1111 = Unused
00 = Stretch LED events to 30 ms.
01 = Stretch LED events to 60 ms.
10 = Stretch LED events to 100 ms.
11 = Reserved.
0 = Disable pulse stretching of all LEDs.
1 = Enable pulse stretching of all LEDs.
Write as ‘0’. Ignore on Read.
3
3
3
Write as ‘0’. Ignore on Read.
MII Drive Strength
0 = Normal MII drive strength
1 = Increase MII drive strength
Write as ‘0’. Ignore on Read.
Show Symbol Error
0 = Normal MII_RXER
1 = 100BASE-X Error Signal to MII_RxER
Write as ‘0’. Ignore on Read.
Description
Description
2
2
Document Number: 302875-005
4
Revision Date: 27-Oct-2005
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RO
1
1
Datasheet
00000000
Default
Default
0010
0000
00
1
0
0
0
0
0