LAN91C111I-NC SMSC, LAN91C111I-NC Datasheet - Page 72

• Manufacturer Part Number: LAN91C111I-NC
• Description: Ethernet ICs Non-PCI 10/100 Ethernet MAC
• Manufacturer: SMSC
• Type: Single Chip MAC and PHYr

Specifications of LAN91C111I-NC

• Ethernet Connection Type: 10 Base-T, 100 Base-TX
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Product: Ethernet Controllers
• Number Of Transceivers: 1
• Standard Supported: 802.3, 802.3u
• Data Rate: 10 Mbps, 100 Mbps
• Supply Voltage (max): 5 V
• Supply Voltage (min): 0 V
• Supply Current (max): 140 mA
• Maximum Operating Temperature: + 85 C
• Package / Case: TQFP-100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Revision 1.91 (06-01-09)
SYMBOL
REGAD[4:0]
TA1
TA0
D[15:0]....
NAME
Register
Address
Turnaround
Time
Data
DEFINITION
If REGAD[4:0] = 00000-11110, these bits determine the specific
register from which D[15:0] is read/written. If multiple register access
is enabled and REGAD[4:0] = 11111, all registers are read/written in
a single cycle.
These bits provide some turnaround time for MDIO
When READ = 1, TA[1:0] = Z0
When WRITE = 1, TA[1:0] = 10
The turnaround time is a 2 bit time spacing between the Register
Address field and the Data field of a management frame to avoid
contention during a read transaction. For a read transaction, both the
STA and the PHY shall remain in a high impedance state for the first
bit time of the turnaround. The PHY shall drive a zero bit during the
second bit time of the turnaround of a read transaction. During a
write transaction, the STA shall drive a one bit for the first bit time of
the turnaround and a zero bit for the second bit time of the
turnaround.
These 16 bits contain data to/from one of the eleven registers
selected by register address bits REGAD[4:0].
DATASHEET
72
10/100 Non-PCI Ethernet Single Chip MAC + PHY
SMSC LAN91C111 REV C
R/W
W
R/W
Any
Datasheet