KSZ8873MLL AM Micrel Inc, KSZ8873MLL AM Datasheet - Page 21
![IC ETHERNET SWITCH 3PORT 64-LQFP](/photos/6/81/68149/64-lqfp-micrel_sml.jpg)
KSZ8873MLL AM
Manufacturer Part Number
KSZ8873MLL AM
Description
IC ETHERNET SWITCH 3PORT 64-LQFP
Manufacturer
Micrel Inc
Specifications of KSZ8873MLL AM
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
64-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Lead Free Status / RoHS Status
Not Compliant, Lead free / RoHS Compliant
Other names
576-3633
KSZ8873MLL AM
KSZ8873MLLAM
KSZ8873MLL AM
KSZ8873MLLAM
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Micrel, Inc.
Auto-Negotiation
The KSZ8873MLL/FLL/RLL conforms to the auto-negotiation protocol, defined in Clause 28 of the IEEE 802.3u
specification.
Auto-negotiation allows unshielded twisted pair (UTP) link partners to select the best common mode of operation. In auto-
negotiation, link partners advertise their capabilities across the link to each other. If auto-negotiation is not supported or
the KSZ8873MLL/FLL/RLL link partner is forced to bypass auto-negotiation, the KSZ8873MLL/FLL/RLL sets its operating
mode by observing the signal at its receiver. This is known as parallel detection, and allows the KSZ8873MLL/FLL/RLL to
establish link by listening for a fixed signal protocol in the absence of auto-negotiation advertisement protocol.
The link up process is shown in the following flow diagram.
September 2010
Bypass Auto Negotiation
Start Auto Negotiation
and Set Link Mode
Force Link Setting
Yes
Figure 3. Auto-Negotiation and Parallel Operation
Attempt Auto
Negotiation
N
o
Listen for 100BASE-TX
21
Link Mode Set ?
Link Mode Set
Operation
Parallel
Idles
Flow
Join
Yes
Listen for 10BASE-T
Link Pulses
KSZ8873MLL/FLL/RLL
No
M9999-092309-1.2
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