LAN8810 Datasheet, PDF (7/83 Pages) Microchip Technology – GMII 10/100/1000 Ethernet Transceiver

LAN8810/LAN8810I
TABLE 2-1: GMII INTERFACE PINS (CONTINUED)
Num
Pins
Name
Symbols
Buffer
Type
Description
1
Receive Data 6
1
Receive Data 7
1
Receive Data
Valid
Receive Error
1
Receive Clock
1
1
Collision Detect
1
Carrier Sense
RXD6
RXD7
RXDV
RXER
RXCLK
COL
CRS
VO6
VO6
VO6
VO6
VO6
VO6
VO6
The PHY transfers data to the MAC using this
signal.
The PHY transfers data to the MAC using this
signal.
Indicates that recovered and decoded data is being
presented on the receive data pins.
Asserted to indicate an error has been detected in
the frame presently being transferred from the
PHY.
Used to transfer data to the MAC.
GMII (1000BASE-T): 125MHz
MII (100BASE-TX): 25MHz
MII (10BASE-T): 2.5MHz
Asserted to indicate detection of a collision
condition. (used in half-duplex mode only)
Indicates detection of carrier. (used in half-duplex
mode only)
Note 2-1
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.
TABLE 2-2: SERIAL MANAGEMENT INTERFACE (SMI) PINS
Num
Pins
1
Name
SMI Clock
1
SMI Data Input/
Output
Symbols
MDC
MDIO
Buffer
Type
Description
VIS
(PD)
Serial Management Interface clock.
VIS/VO8 Serial Management Interface data input/output.
(PU)
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DS00001870B-page 7