KSZ8863FLLI Micrel Inc, KSZ8863FLLI Datasheet - Page 30

• Manufacturer Part Number: KSZ8863FLLI
• Description: IC ETHERNET SWITCH 3PORT 48-LQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8863FLLI

• Controller Type: Ethernet Switch Controller
• Interface: MII
• Voltage - Supply: 1.8V, 2.5V, 3.3V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / RoHS Status: Supplier Unconfirmed, Lead free / RoHS Compliant
• Other names: 576-3750

Micrel, Inc.
MII Management (MIIM) Interface
The KSZ8863MLL/FLL/RLL supports the IEEE 802.3 MII Management Interface, also known as the Management Data
Input/Output (MDIO) Interface. This interface allows upper-layer devices to monitor and control the states of the
KSZ8863MLL/FLL/RLL. An external device with MDC/MDIO capability is used to read the PHY status or configure the
PHY settings. Further detail on the MIIM interface is found in Clause 22.2.4.5 of the IEEE 802.3u Specification and refer
to 802.3 section 22.3.4 for the timing.
The MIIM interface consists of the following:
The MIIM Interface can operate up to a maximum clock speed of 5MHz.
The following table depicts the MII Management Interface frame format.
August 2010
• A physical connection that incorporates the data line (SDA_MDIO) and the clock line (SCL_MDC).
• A specific protocol that operates across the aforementioned physical connection that allows an external controller to
• Access to a set of eight 16-bit registers, consisting of six standard MIIM registers [0:5] and two custom MIIM registers
communicate with the KSZ8863MLL/FLL/RLL device.
[29, 31].
Read
Write
Preamble
32 1’s
32 1’s
Start of
Frame
01
01
Table 8. MII Management Interface Frame Format
Read/Write
OP Code
10
01
PHY
Address
Bits [4:0]
AAAAA
AAAAA
30
REG
Address
Bits [4:0]
RRRRR
RRRRR
TA
Z0
10
Data Bits [15:0]
DDDDDDDD_DDDDDDDD
DDDDDDDD_DDDDDDDD
KSZ8863MLL/FLL/RLL
M9999-081810-1.2
Idle
Z
Z