LAN8810 Datasheet, PDF (8/83 Pages) Microchip Technology – GMII 10/100/1000 Ethernet Transceiver

LAN8810/LAN8810I
TABLE 2-3: LED & CONFIGURATION PINS
Num
Pins
1
Name
10BASE-T Link
LED Indicator
100BASE-TX
Link LED
Indicator
Hardware
Power Down
1
(HPD) Mode
Configuration
Strap
Symbols
10_LED
100_LED
HPD_MODE
1000BASE-T
1
Link LED
Indicator
1
Link Activity
LED Indicator
Configuration
Input 0
1
1000_LED
ACT_LED
CONFIG0
Configuration
Input 1
1
CONFIG1
Configuration
Input 2
1
Configuration
Input 3
1
CONFIG2
CONFIG3
Buffer
Type
VO8
VO8
VIS
(PD)
VO8
VO8
VIS
(PD)
VIS
(PD)
VIS
(PD)
VIS
(PD)
Description
10BASE-T LED link indication. Refer to Section
3.9.1, "LEDs," on page 27 for additional
information.
100BASE-TX LED link indication. Refer to Section
3.9.1, "LEDs," on page 27 for additional
information.
This configuration strap is used to select the
Hardware Power Down (HPD) mode. When pulled-
up, the PLL is not disabled when HPD is asserted.
When pulled-down, the PLL is disabled when HPD
is asserted.
Refer to Section 3.7.3, "Hardware Power-Down,"
on page 23 for additional information.
See Note 2-2 for more information on configuration
straps.
1000BASE-T LED link indication. Refer to Section
3.9.1, "LEDs," on page 26 for additional
information.
Link activity LED indication. Refer to Section 3.9.1,
"LEDs," on page 26 for additional information.
This pin sets the PHYADD[1:0] bits of the 10/100
Special Modes Register on reset or power-up. It
must be connected to VSS, 100_LED, 1000_LED,
or VDDVARIO. Refer to Section 3.8.1.2,
"CONFIG[3:0] Configuration Pins," on page 24 for
additional information.
This pin sets the PAUSE bit of the Auto Negotiation
Advertisement Register and PHYADD [2] bit of the
10/100 Special Modes Register on reset or power-
up. It must be connected to VSS, 100_LED,
1000_LED, or VDDVARIO. Refer to Section
3.8.1.2, "CONFIG[3:0] Configuration Pins," on
page 24 for additional information.
This pin sets the MOD[1:0] bits of the Extended
Mode Control/Status Register on reset or power-
up. It must be connected to VSS, 100_LED,
1000_LED, or VDDVARIO. Refer to Section
3.8.1.2, "CONFIG[3:0] Configuration Pins," on
page 24 for additional information.
This pin sets the MOD[3] bit of the Extended Mode
Control/Status Register on reset or power-up. It
must be connected to 1000_LED or VDDVARIO.
Refer to Section 3.8.1.2, "CONFIG[3:0]
Configuration Pins," on page 24 for additional
information.
Note 2-2
Configuration strap values are latched on hardware reset. Configuration straps are identified by an
underlined symbol name. Signals that function as configuration straps must be augmented with an
external resistor when connected to a load. Refer to Section 3.8, "Configuration," on page 23 for
additional information.
DS00001870B-page 8
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