LAN83C185-JT SMSC, LAN83C185-JT Datasheet - Page 26

• Manufacturer Part Number: LAN83C185-JT
• Description: IC PHY 10/100 3.3V LP 64-TQFP
• Manufacturer: SMSC

Specifications of LAN83C185-JT

• Controller Type: Ethernet Controller
• Interface: MII
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 40mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Supply Voltage Range: 2.97V To 3.63V
• Digital Ic Case Style: TQFP
• No. Of Pins: 64
• Operating Temperature Range: 0°C To +70°C
• Data Rate Max: 100Mbps
• Supply Voltage Max: 3.6V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1009

MDI0
MDC
MDIO
MDC
Revision 0.8 (06-12-08)
Preamble
Preamble
32 1's
32 1's
The minimum cycle time (time between two consecutive rising or two consecutive falling edges) is 400
ns. These modest timing requirements allow this interface to be easily driven by the I/O port of a
microcontroller.
The data on the MDIO line is latched on the rising edge of the MDC. The frame structure and timing
of the data is shown in
The timing relationships of the MDIO signals are further described in
Management Interface (SMI) Timing," on page
Start of
0
Frame
Start of
0
Frame
1
1
Figure 4.5 MDIO Timing and Frame Structure - WRITE Cycle
Figure 4.4 MDIO Timing and Frame Structure - READ Cycle
1
Code
0
Code
OP
OP
0
1
A4
A4
Figure 4.4
PHY Address
PHY Address
A3
Data To Phy
A3
Read Cycle
Write Cycle
High Performance Single Chip Low Power 10/100 Ethernet Physical Layer Transceiver (PHY)
A2
A2
and
DATASHEET
A1
A1
Data To Phy
Figure
A0 R4 R3 R2 R1 R0
A0 R4 R3 R2 R1 R0
26
4.5.
Register Address
Register Address
50.
Around
Around
Turn
Turn
D15
D15
D14
D14
Section 6.1, "Serial
Data From Phy
Data
Data
...
...
SMSC LAN83C185
...
...
D1
D1
Datasheet
D0
D0