LAN8720A-CP-TR Standard Microsystems (SMSC), LAN8720A-CP-TR Datasheet - Page 48

• Manufacturer Part Number: LAN8720A-CP-TR
• Description: SMALL FOOTPRINT RMII 10/100 ETHERNET TR
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN8720A-CP-TR

• Number Of Receivers: 1
• Protocols Supported: IEEE 802.3
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Package Type: QFN
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Operating Temperature (max): 85C
• Operating Temperature (min): 0C
• Lead Free Status / Rohs Status: Compliant

Revision 1.0 (12-09-09)
4.2.1
BITS
7:0
15
14
13
12
11
10
9
8
Soft Reset
1 = software reset. Bit is self-clearing. When setting this bit do not set other
bits in this register. The configuration (as described in
"MODE[2:0]: Mode Configuration," on page
values, and not from the mode pins.
Loopback
0 = normal operation
1 = loopback mode
Speed Select
0 = 10Mbps
1 = 100Mbps
Note:
Auto-Negotiation Enable
0 = disable auto-negotiate process
1 = enable auto-negotiate process (overrides 0.13 and 0.8)
Power Down
0 = normal operation
1 = General power down mode
Note:
Isolate
0 = normal operation
1 = electrical isolation of PHY from the RMII
Restart Auto-Negotiate
0 = normal operation
1 = restart auto-negotiate process
Note:
Duplex Mode
0 = half duplex
1 = full duplex
Note:
RESERVED
Basic Control Register
Note 4.1
Ignored if Auto-negotiation is enabled (0.12 = 1).
The Auto-Negotiation Enable must be cleared before setting the
Power Down.
Bit is self-clearing.
Ignored if Auto-Negotiation is enabled (0.12 = 1).
Index (In Decimal): 0
The default value of this bit is determined by the MODE[2:0] configuration straps. Refer to
Section 3.7.2, "MODE[2:0]: Mode Configuration," on page 31
DESCRIPTION
DATASHEET
31) is set from the register bit
48
Size:
Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Section 3.7.2,
16 bits
for additional information.
TYPE
SMSC LAN8720/LAN8720i
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RO
SC
SC
DEFAULT
Note 4.1
Note 4.1
Note 4.1
Datasheet
0b
0b
0b
0b
0b
-