LAN8810I-AKZE Datasheet, PDF (33/100 Pages) Microchip Technology – GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support

GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
3.8.1.2.3
CONFIGURATION BITS IMPACTED BY THE MODE OF OPERATION
Immediately after a reset, the MOD field of the Extended Mode Control/Status Register will be set
dependent on the configuration pin values of the CONFIG3 and CONFIG2 pins, as described in
Section 3.8.1.2.2. Table 3.11 details how the MOD field effects other device configuration register bits.
Note: Table 3.11 utilizes register index and bit number referencing in lieu of individual names.
Table 3.11 Register Bits Impacted by the Mode of Operation (MOD)
REG 19
[15:11]
MODE DEFINITIONS
00000 10BASE-T Half Duplex. Auto-negotiation disabled.
00001 10BASE-T Full Duplex. Auto-negotiation disabled.
00010 100BASE-TX Half Duplex. Auto-negotiation disabled.
CRS is active during Transmit & Receive.
00011 100BASE-TX Full Duplex. Auto-negotiation disabled.
CRS is active during Receive.
00100 100BASE-TX Half Duplex. Auto-negotiation enabled.
CRS is active during Transmit & Receive.
00101 RESERVED
00110 RESERVED
00111 All capable. Auto-negotiation enabled.
Auto master/slave resolution single port.
01000 RESERVED
01001 All capable. Auto-negotiation enabled.
Manual master/slave resolution slave port.
01010 All capable. Auto-negotiation enabled.
Manual master/slave resolution master port.
01011 - RESERVED
11111
REG 0
REG 4
REG 9
[13,12,8,6] [8,7,6,5] [12,11,10,9,8]
0000
0010
1000
XXXX
XXXX
XXXX
XXX00
XXX00
XXX00
1010
XXXX
XXX00
1100
0100
XXX00
-
-
01X1
-
-
1111
-
-
00011
-
01X1
-
1111
-
10011
01X1
1111
11111
-
-
-
3.8.2
Software Configuration
The Serial Management Interface (SMI) allows for the configuration and control of multiple
transceivers. Several 16-bit status and control registers are accessible through the management
interface pins MDC and MDIO for 10/100/1000Mbps operation. The device implements all the required
MII registers and optional registers as described in Chapter 4, "Register Descriptions," on page 43.
Configuring the SMI address is described in Section 3.8.1.2.1. Refer to Section 3.4, "Serial
Management Interface (SMI)," on page 25 for additional information on the SMI.
SMSC LAN8810/LAN8810i
33
DATASHEET
Revision 1.0 (02-06-13)