WBLXT9785HC.D0-865113 Cortina Systems Inc, WBLXT9785HC.D0-865113 Datasheet - Page 205

• Manufacturer Part Number: WBLXT9785HC.D0-865113
• Manufacturer: Cortina Systems Inc

Specifications of WBLXT9785HC.D0-865113

• Lead Free Status / RoHS Status: Compliant

LXT9785/LXT9785E
Datasheet
249241, Revision 11.0
16 April 2007
Table 97
Table 98
Cortina Systems
LED Configuration Register (Address 20, Hex 14)
Receive Error Count Register (Address 21, Hex 15)
®
1. R/W = Read/Write
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.
1. R = Read Only, LH = Latching High – cleared when read
Note:
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
15:0
Bit
Bit
7:4
3:2
The secondary LED driver (Receive, Activity, or Error) causes the LED to change state (blink).
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.
1
0
Cortina recommends reading this register once every time link is established to clear the register.
Name
Receive Error
Count
Name
LED3
Programming
bits
LEDFREQ
PULSE-
STRETCH
Reserved
Description
0000 =Display Speed Status
0001 =Display Transmit Status
0010 =Display Receive Status
0011 = Display Collision Status
0100 =Display Link Status
0101 =Display Duplex Status
0110 = Display Isolate Status
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 = Display Link and RxER Status combined
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
Note:
Write as 0, ignore on Read
Description
A 16-bit counter value indicating the number of times a
receive packet with errors occurred. Only one event gets
counted per packet. When maximum count is reached, the
16-bit counter remains full until cleared.
(Stretched)
(Stretched)
(Default) (Blink)
Receive activity LEDs are initially active based upon
carrier sense.
3
3
3
3
2
2
2
(Blink)
4
7.0 Register Definitions
Type
LH
R/
Type
R/W
R/W
R/W
R/W
1
1
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Default
0x0000
Default
1110
00
1
0