LAN9210-ABZJ SMSC, LAN9210-ABZJ Datasheet - Page 66
LAN9210-ABZJ
Manufacturer Part Number
LAN9210-ABZJ
Description
IC ETHERNET CTLR SGL CHIP 56-QFN
Manufacturer
SMSC
Datasheet
1.LAN9210-ABZJ.pdf
(147 pages)
Specifications of LAN9210-ABZJ
Controller Type
Ethernet Controller
Interface
Serial EEPROM
Voltage - Supply
3.3V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
56-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Supply
-
Other names
638-1048-6
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LAN9210-ABZJ
Manufacturer:
Standard
Quantity:
2 500
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Chapter 4 Internal Ethernet PHY
Revision 2.7 (03-15-10)
4.1
4.2
4.2.1
Functionally, the internal PHY can be divided into the following sections:
The data path of the 100Base-TX is shown in
4B/5B Encoding
The transmit data passes from the MII block to the 4B/5B encoder. This block encodes the data from
4-bit nibbles to 5-bit symbols (known as “code-groups”) according to
is mapped to 16 of the 32 possible code-groups. The remaining 16 code-groups are either used for
control information or are not valid.
The first 16 code-groups are referred to by the hexadecimal values of their corresponding data nibbles,
0 through F. The remaining code-groups are given letter designations with slashes on either side. For
example, an IDLE code-group is /I/, a transmit error code-group is /H/, etc.
The encoding process may be bypassed by clearing bit 6 of register 31. When the encoding is
bypassed the 5
Top Level Functional Description
100Base-TX Transmit
100Base-TX transmit and receive
10Base-T transmit and receive
Internal MII interface to the Ethernet Media Access Controller
Auto-negotiation to automatically determine the best speed and duplex possible
Management Control to read status registers and write control registers
MAC
Converter
NRZI
RJ45
th
MII 25 MHz by 4 bits
transmit data bit is equivalent to TX_ER.
TX_CLK
NRZI
Internal
MLT-3
Figure 4.1 100Base-TX Data Path
Converter
MLT-3
100M
PLL
CAT-5
DATASHEET
125 Mbps Serial
MII
MLT-3
MLT-3
66
Figure
by 4 bits
Driver
25MHz
Tx
Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support
4.1. Each major block is explained below.
Encoder
4B/5B
MLT-3
Magnetics
25MHz by
5 bits
Table
4.1. Each 4-bit data-nibble
Scrambler
and PISO
SMSC LAN9210
Datasheet
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