dm9301fp Davicom Semiconductor, Inc., dm9301fp Datasheet

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dm9301fp

Manufacturer Part Number
dm9301fp
Description
100mbps Ethernet Fiber/twisted Pair Single Chip Media Converter
Manufacturer
Davicom Semiconductor, Inc.
Datasheet
General Description
The DM9301FP is a physical-layer, single-chip, low-
power media converter for 100BASE-TX/FX full
duplex repeater applications. On the TX media side,
it provides a direct interface to Unshielded Twisted
Pair Cable 5 (UTP5) for 100BASE-TX Fast Ethernet.
On the FX media side, it provides a direct interface to
a Pseudo Emitter Coupled Logic level interface
(PECL).
The DM9301FP uses a low power and high
performance CMOS process. It contains the entire
physical layer functions of 100BASE-TX as defined
by IEEE802.3u, including the Physical Coding
Sublayer (PCS), Physical Medium Attachment
(PMA), Twisted Pair Physical Medium Dependent
Sublayer (TP-PMD) and a PECL compliant interface
for a fiber optic module, compliant with ANSI X3.166.
The DM9301FP provides two independent clock
Block Diagram
Final
Version: DM9301FP-DS-F03
June 06, 2007
PECLRXI +/-
PECLTXO +/-
OSC/XTAL
PECLSD
25M
RCVR
PECL
RCVR
FXSD
TXMT
PECL
CGM
CRM
RX
NRZI
NRZ
to
NRZI
NRZ
to
125M FXRXCLK
to Serial
25M FXRXCLK
Parallel
Serial to
Parallel
TX Code-
Alignment
Monitor
100Mbps Ethernet Fiber/Twisted Pair Single Chip Media Converter
group
Link Status
LED Driver
Monitor &
Descrambler
Alignment
FX Code-
Monitor
group
25M TPRXCLK
Scrambler
recovery circuits to minimize bit delay through the
converter (no FIFO is used to buffer data between
the FX and TX interfaces). Furthermore, due to the
excellent rise/fall time control by a built-in wave-
shaping filter, the DM9301FP needs no external filter
to transport signals to the media on the 100Base-TX
interface.
Patent-Pending Circuits
Serial to
Parallel
Smart adaptive receiver equalizer
Digital algorithm for high frequency clock/data
recovery circuit
High speed wave-shaping circuit
125M TPRXCLK
to Serial
Parallel
NRZI
NRZ
to
NRZI
NRZ
to
CRM
RX
NRZI to
MLT-3
MLT-3 to
NRZI
DM9301FP
Rise/Fall
Adaptive
MLT-3
Driver
Time
CTL
EQ
TPTXO+/-
TPRXI+/-
1

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dm9301fp Summary of contents

Page 1

... FIFO is used to buffer data between the FX and TX interfaces). Furthermore, due to the excellent rise/fall time control by a built-in wave- shaping filter, the DM9301FP needs no external filter to transport signals to the media on the 100Base-TX interface. Patent-Pending Circuits • ...

Page 2

... Table of Contents General Description.................................................. 1 Block Diagram .......................................................... 1 Table of contents...................................................... 2 Features ................................................................... 3 Pin Configuration: DM9301FP QFP ......................... 4 Pin Description ......................................................... 5 Functional Description............................................ 10 100Base- Operation ................................. 10 FX PECL Receiver.............................................. 10 FX Receiver Clock Recovery Module................. 10 FX NRZI to NRZ Converter ................................ 10 FX Serial to Parallel Converter ........................... 11 FX Code Group Alignment Monitor .................... 11 TX Scrambler ...

Page 3

... Compliant with ANSI X3T12 TP-PMD 1995 standard • Compliant with ANSI X3.166 FDDI-PMD • Supports Half and Full Duplex operation 100Mbps, the DM9301FP operates in Full Duplex mode at all times • High performance 100Mbps clock generator and data recovery circuit • Controlled output edge rates in the 100Base-TX ...

Page 4

... Pin Configuration: DM9301FP QFP 1 TPRXI+ TPRXI AVCC 4 AVCC 5 AGND 6 AGND 7 AVCC 8 BGREF 9 BGRET 10 AVCC AGND 11 12 AGND TPTXO TPTXO+ 15 AVCC 16 AGND AGND 17 18 PECLTXO- PECLTXO AGND 21 AVCC 22 PECLSD- 23 PECLSD+ 24 PECLRXI- 25 PECLRXI+ 26 AVCC OSC/ AGND 30 OSC/XTL# 4 100Mbps Ethernet Fiber/Twisted Pair Single Chip Media Converter ...

Page 5

... These outputs drive NRZI encoded data for PECL FX interface. I 100BASE-FX PECL Signal detect: These pins are differential signals that indicate to the DM9301FP that the Optical Module interface is detecting valid optical energy. I Crystal or Oscillator Input: This pin should connect to one side of a 25MHz, 50ppm crystal if OSC/XTL#=0 ...

Page 6

... VCC is stable. I Send Halt on no Link Condition: Causes the DM9301FP to Send out a Halt symbol to the TX interface link active or send out a Halt symbol to the FX interface link active. Propagates a no-link condition to the Link Partner if 1, Idle symbol if 0 ...

Page 7

... OD TX Error LED: Indicates an error was detected by the TX Code Group Alignment Monitor function on the TX receiver. Active low (Open Drain Output) The DM9301FP incorporates a "monostable" function on the TXERRLED output. This ensures that even minimum size errors generate adequate LED ON to insure visibility. I ...

Page 8

... TPO0 92, 91, 89, TPI3, TPI2, TPI1, 88 TPI0, 8 100Mbps Ethernet Fiber/Twisted Pair Single Chip Media Converter I Mux. Control 1 and 0: Used for testing the DM9301FP Data Paths. Set to zero for normal operation. Initiated at an H/W reset. Active high. MUXCTL1 MUXCTL0 Test Port Output: Reflects the DM9301FP internal status ...

Page 9

... TPEN 87 TPMUX 41 BPSCRAM Power and Ground Pins : The power (VCC) and ground (GND) pins of the DM9301FP are grouped in pairs of two categories - Digital Circuitry Power/Ground Pairs and Analog Circuitry Power/Ground Pair. Group A - Digital Supply Pairs 33, 42, 50, 53, DGND 63, 68, 72, 78, 82, 90, 98 37, 46, 51, 56, ...

Page 10

... Functional Description The DM9301FP Fast Ethernet single-chip TX/FX media converter, provides the functionality as specified in IEEE802.3, integrates the complete 100BASE-TX and a PECL optic module interface for 100Base-FX. The DM9301FP implements the PCS, PMA, and TP-PMD sublayer functions, as defined by specification. The term “X” will be used to describe the sections used in the fiber PHY layer interface. The term “ ...

Page 11

... XOR logic function. The result is a scrambled data stream with sufficient randomization to decrease radiated emissions at critical frequencies. Final Version: DM9301FP-DS-F03 June 06, 2007 100Mbps Ethernet Fiber/Twisted Pair Single Chip Media Converter TX Parallel to Serial Converter The TX Parallel to Serial converter receives parallel ...

Page 12

... TX Link Status Monitor TX Code- group Alignment Monitor 25M TPRXCLK 125M TPRXCLK NRZI Serial to Parallel Descrambler Parallel to Serial Block Diagram Figure 2 DM9301FP MLT-3 to Adaptive TPRXI+/- to NRZI EQ NRZ TX CRM Version: DM9301FP-DS-F03 Final June 06, 2007 ...

Page 13

... Therefore, the compensation or equalization must be adaptive to ensure proper conditioning of the received signal independent of the cable length. TX MLT-3 to NRZI Decoder The DM9301FP decodes the MLT-3 information from the TX Digital Adaptive Equalizer into NRZI data. TX Clock Recovery Module The TX Clock Recovery Module accepts NRZI data from the MLT-3 to NRZI decoder ...

Page 14

... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DM9301FP Max. Unit Conditions 7.0 V Non-operating 5.5 V 5.5 V °C +150 1 W °C 240 4000 V Max. Unit Conditions --- 5.25 °C 85 200 mA 5V Version: DM9301FP-DS-F03 June 06, 2007 Final ...

Page 15

... Differential Output Current PECL FX Transmitter IFD100 PECLTX+/- 100BASE-FX Mode Differential Output Current V PECL Output Voltage – High OH V PECL Output Voltage – Low OL Final Version: DM9301FP-DS-F03 June 06, 2007 100Mbps Ethernet Fiber/Twisted Pair Single Chip Media Converter (V = 5V) CC Min. Typ. 2.0 -200 2.4 1.5 2.0 │ ...

Page 16

... Ethernet Fiber/Twisted Pair Single Chip Media Converter (Over full range of operating condition unless specified otherwise) Min. Typ. 3.0 -0.5 -0.5 300 1.0 -0.5 -0.5 -50 -100 DM9301FP Max. Unit Conditions 5.0 ns 0 2.0 ns 0.5 ns 0.5 ns 300 ps 2.0 ns +50 ppm 25MHz Frequency +100 ppm 25MHz Frequency Preliminary Version: DM9301FP-DS-F03 June 06, 2007 ...

Page 17

... TX Transmit Timing Parameters Symbol Parameter t PECLRX+/- to TPTXo+/- Out ( Latency) 5-Bit Symbol 100Base-TX/FX Transmit Timing Diagram TXCLK TXD [4:0] 100TX+/- 100FX+/- Final Version: DM9301FP-DS-F03 June 06, 2007 100Mbps Ethernet Fiber/Twisted Pair Single Chip Media Converter Min Min ...

Page 18

... Ethernet Fiber/Twisted Pair Single Chip Media Converter Min. Typ Min. Typ DM9301FP Max. Unit Conditions - 90% To 10%, Into 100ohm Differential t t RXD RXD pdtxi pdfxi Max. Unit Conditions - Version: DM9301FP-DS-F03 Preliminary June 06, 2007 ...

Page 19

... MII Application Circuit: DM9301FP QFP Final Version: DM9301FP-DS-F03 June 06, 2007 100Mbps Ethernet Fiber/Twisted Pair Single Chip Media Converter (For Reference Only) DM9301FP 19 ...

Page 20

... MII Application Circuit: DM9301FP QFP place caps close to U1 pins VCC 10uf .1uf .01uf .1uf SMD-B GND Plus 5 volt D.C. input J2 L1 Ferrite Hi current VCC SMD .1uf L2 Ferrite Hi current 10uf Power Jack GND GND VCC VCC 81 R11 GND 82 10K ...

Page 21

... Dimension D 2. All dimensions are base on metric system. 3. General appearance spec should base on its final visual inspection spec. Final Version: DM9301FP-DS-F03 June 06, 2007 100Mbps Ethernet Fiber/Twisted Pair Single Chip Media Converter Dimension in mm Dimension in inch Min Nom Max Min 3 ...

Page 22

... Ethernet networking standards. Davicom America Corp 4633 Old Ironsides Dr., STE 318 Santa Clara, CA 95054, USA Tel: 408.980.9108 Fax:408.980.9236 DM9301FP Preliminary Version: DM9301FP-DS-F03 June 06, 2007 ...

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