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LXT975B Datasheet(PDF) 69 Page - Intel Corporation

Part # LXT975B
Description  Fast Ethernet 10/100 Quad Transceivers
PDF  74 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

LXT975B Datasheet(HTML) 69 Page - Intel Corporation

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Fast Ethernet 10/100 Quad Transceivers — LXT974/LXT975
Datasheet
69
16.7:6
LED_2 Select
Determine condition indicated by LED_2
R/W
0 0
bit 7
bit 6
Indication Setting
00
LEDn_2 indicates Link
01
LEDn_2 indicates Half-Duplex Status
10
LEDn_2 indicates 100 Mbps
11
LEDn_2 indicates Collision
16.5:4
LED_1 Select
Determine condition indicated by LED_1
R/W
0 0
bit 5
bit 4
Indication Setting
00
LEDn_1 indicates Receive Activity
01
LEDn_1 indicates Link
10
LEDn_1 indicates Half-Duplex Status
11
LEDn_1 indicates 100 Mbps
16.3:2
LED_0 Select
Determine condition indicated by LED_0
R/W
0 0
bit 3
bit 2
Indication Setting
00
LEDn_0 indicates Transmit Activity
01
LEDn_0 indicates Receive Activity
10
LEDn_0 indicates Link
11
LEDn_0 indicates Half-Duplex Status
16.1
Link Algorithm
1 = Enhanced link algorithm - Link goes down when 12 idle symbols in
a row are not received within 1 to 2 ms.
0 = Standard link algorithm - Link goes down when symbol error rate is
greater than 64/1024.
R/W
0
16.0
LED Extension
1 = Disable extension of LED active time for LEDn_<2:0>.
0 = Enable extension of LED active time for LEDn_<2:0>.
R/W
0
Table 52. Interrupt Enable Register (Address 17, Hex 11)
Bit
Name
Description
Type 1
Default
17.15:2
Reserved
Write as 0; ignore on read.
R/W
N/A
17.1
INTEN
1 = Enable interrupts. Must be enabled for bit 17.0 or 19.12 to be effective.
0 = Disable interrupts.
R/W
0
17.0
TINT
1 = Forces MDINT Low and sets bit 18.15 = 1. Also forces interrupt pulse
on MDIO when bit 19.12 = 1.
0 = Normal operation.
This bit is ignored unless the interrupt function is enabled (17.1 = 1).
R/W
0
1. R/W = Read /Write
Table 51. LED Configuration Register (Address 16, Hex 10)
Bit
Name
Description
Type 1
Default
1. R/W = Read /Write



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