LP62S1024AX-70LLT/ REALTEK, LP62S1024AX-70LLT/ Datasheet

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LP62S1024AX-70LLT/

Manufacturer Part Number
LP62S1024AX-70LLT/
Description
Quad 10/100 Mbps Fast Ethernet Transceiver
Manufacturer
REALTEK
Datasheet
1. Features
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2. General Description
The RTL8204 is a highly integrated 3.3V low power, 4 port, 10Base-T/100Base-TX/FX, Ethernet transceiver
implemented in 0.35um CMOS technology. Flexible hardware settings are provided to configure the various operating
modes of RTL8204. The RTL8204 consists of 4 separate and independent channels. Each channel consists of 4B5B
encoder/decoder, Manchester encoder/decoder, scrambler/descrambler, transmit output driver, output wave shaping,
filters, digital adaptive equalizer, PLL circuit and DC restoration circuit for clock/data recovery, and RMII interface to
MAC controller. Moreover, RTL8204 is featured by very low power consumption, as low as 1.6 W (max.) is achieved.
Further power reduction can be done via a 1.25:1 transformer on the transmit side with power down to 1.28 W(max.).
For ease of system design, only one external clock source is needed when operating with Realtek 8-port switch controller,
RTL8308, to produce a high performance switch system. Additionally, optimized pinouts are taken such that direct
routing can be implemented, which simplifies the layout work and also gain EMI noise reduction. Also, on-chip filtering
and waveshaping circuit eliminate the need for many components around.
Support 4-port integrated physical layer and
transceiver for 10Base-T and 100Base-TX.
One port supports 100Base-FX.
Fully compliant with IEEE 802.3/802.3u.
Support RMII (Reduced MII ) interface.
Low power consumption at 3.3V operating voltage.
Support three Power reduction ways:
On-chip filtering eliminates the need for external
l Power saving mode (cable detection).
l Power down mode.
l Selectable additional power reduction by
1.25:1 transformer on transmit side.
Realtek Quad 10/100 Mbps
Fast Ethernet Transceiver
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filters.
IEEE 802.3u compliant auto-negotiation for full
10/100 Mbps control.
Hardware controlled 10/100, Full/Half duplex, Flow
control advertisement ability.
Reversible PHY address.
Power-on auto reset function eliminates the need for
any external reset circuits.
LEDs blinking for diagnostics on power-on.
100-pin PQFP.
0.35 um, 3.3V CMOS technology.
Aug 3, 2000

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LP62S1024AX-70LLT/ Summary of contents

Page 1

... Further power reduction can be done via a 1.25:1 transformer on the transmit side with power down to 1.28 W(max.). For ease of system design, only one external clock source is needed when operating with Realtek 8-port switch controller, RTL8308, to produce a high performance switch system. Additionally, optimized pinouts are taken such that direct routing can be implemented, which simplifies the layout work and also gain EMI noise reduction ...

Page 2

Document Revision Information Revision Date 1.00 04/20/2000 Original document. 1.01 05/08/2000 First SMI read/write cycle after power-on reset. P.7 and P.15.. 1.02 05/12/2000 Power-on VCC rising time to complete auto-reset. P.6. Reset description in details. P.12. 1.03 05/29/2000 Add 100Base-FX ...

Page 3

Block Diagram RXCLK RXD[3:0] RXD[1:0] CRSDV CRS RXDV COL TXCLK TXEN TXEN TXER TXD[3:0] TXD[1:0] 4. Pin Assignments 4B/5B DECODE RX STATE MACHINE BYP-DESCR 100BASE-TX RECEIVER 100BASE-TX TRANSMITTER TX STATE MACHINE BYP-SCR 3 FXRP/N SDP/N (PORT[D] ONLY) RXIP/N 10/100 ...

Page 4

REFCLK 67 DVDD 68 RXD[1][B] 69 RXD[0][B] 70 RXER[B] 71 CRSDV[B] 72 DGND 73 DGND 74 TXD[1][B] 75 TXD[0][B] 76 TXE[B] 77 DVDD 78 RXD[1][A] 79 RXD[0][A] 80 DVDD 81 RXER[A] 82 CRSDV[A] 83 DGND 84 TXD[1][A] 85 TXD[0][A] ...

Page 5

AGND, 4, TXOP[A], 5, TXON[A], 6, AVDD, 7, AVDD, 8, TXON[B], 9, TXOP[B], 10, AGND, 11, AGND, 12, RXIP[B], 13, RXIN[B], 14, AVDD, 15, AVDD, 16, RXIN[C]. 17, RXIP[C], 18, AGND, 19, AGND, 20, TXOP[C], 21, TXON[C], 22, AVDD, 23, ...

Page 6

PIN NAME Pin RXIP[A], RXIN[A] 2,1 RXIP[B], RXIN[B] 13,14 RXIP[C], RXIN[C] 18,17 RXIP[D], RXIN[D] 29,30 TXOP[A], TXON[A] 5,6 TXOP[B], TXON[B] 10,9 TXOP[C], TXON[C] 21,22 TXOP[D], TXON[D] 26,25 FXRP[D],FXRN[D], 34,35 FXTP[D],FXTN[D] 36,37 SDP[D],SDN[D] 32,33 Power and Ground Pins PIN NAME Pin ...

Page 7

RXD[1:0][C] 55,56 RXD[1:0][D] 45,46 CRSDV[A:D] 82,71, 58,48 RXER[A:D] 81,70, 57,47 SMI(Serial Management Interface) pins PIN NAME Pin MDIO 64 MDC 65 LED pins ( LEDs activate as active high or low depending on mode pins. Refer to LED configuration section) ...

Page 8

... Reserved pins PIN NAME Pin Reserved 94 6. Registers Description The first six registers of the MII registers are defined by the MII specification. Other registers are defined by Realtek Semiconductor Corp. for internal use and reserved for specific use. Register 0 Control Register 1 Status Register ...

Page 9

Auto Negotiation 1 = Enable auto-negotiation process. Enable 0 = disable auto-negotiation process. This bit can be set by ANEG (pin39) or SMI.(Read/Write) For port[D], when 100FX mode is enabled by pulling FX_DIS (pin91) low, this bit =0 regardless ...

Page 10

The jabber function is disabled in the 100Base-X. Jabber occurs when a predefined excessive long packet is detected for 10Base-T. When the duration of TXEN exceeds the jabber timer (60ms), the transmit and loopback functions will be disabled and COL ...

Page 11

Link Partner. 0=100Base-T4 not supported by Link Partner. 5.8 100Base-TX-FD 1=100Base-TX full duplex supported by Link Partner. 0=100Base-TX full duplex not supported by Link Partner. For port[D] 100FX mode, this bit is set when Reg.0.8=1. ...

Page 12

Link Monitor The 10Base-T link pulse detection circuit always monitors the RXIP/RXIN pins for the presence of valid link pulses. Auto-polarity is implemented for correcting the detected reverse polarity of RXIP/RXIN signal pairs. 7.2.4 Jabber Jabber occurs when TXEN ...

Page 13

Scrambler/de-scrambler is bypassed in 100Base-FX. 7.4.3 Far-End-Fault-Indication (FEFI) MII Reg.1.4 (Remote Fault) is FEFI bit for port[D] when 100FX enabled, which indicates FEFI has been detected. FEFI is an alternative in-band signaling which is composed of 84 consecutive ...

Page 14

Additional power reduction can be gained by a 1.25:1 transformer on its TX side and using a 2.45K pin. External pull-high resistors for TXOP/TXON should be changed from 50 more details. About 20% power is reduced for maximum power consumption. ...

Page 15

Application information 8.1 10Base-T/100Base-TX Application RXIP RXIN RTL8204 TXOP TXON FX_DIS IBREF Transformer 1:1 0.1uF 3.3V 0.1uF 1:1 3.3V 3.3V 0.1uF 15 RJ45 0.1uF/3KV Chasis GND ...

Page 16

Reduction Application) RXIP RXIN RTL8204 TXOP TXON FX_DIS IBREF Transformer 1:1 0.1uF 3.3V 0.1uF 1.25:1 3.3V 3.3V 0.1uF 16 RJ45 0.1uF/3KV Chasis GND ...

Page 17

Application FXRP FXRN RTL8204 SDP SDN FXTN FXTP FX_DIS * The fiber transceiver must work on 3.3V power supply such that it won’t destroy RTL8204 while connecting together. 3.3V VCC_TX (3.3V) 17 VCC_RX (3.3V) Fiber Transceiver 1 GND_RX ...

Page 18

Electrical Characteristics 9.1 Absolute Maximum Ratings: WARNING: Absolute maximum ratings are limits beyond which may cause permanent damage to the device or affect device reliability. All voltages are specified reference to GND unless otherwise specified. Parameter Storage Temperature Vcc ...

Page 19

TX+/- Output Current High I OH TX+/- Output Current Low I OL RX+/- Common-mode input voltage RX+/- Differential input resistance Differential Input Resistance Input Squelch Threshold 9.4 AC Characteristics(0 C<Ta<70 C, 3.15V<Vcc<3.45V) Parameter SYM Differential Output Voltage peak-to-peak ...

Page 20

CRS_DV assert First bit of “T on MDI input to CRS_DV de-assert RX Propagation Delay t RXpd TX Propagation Delay t TXpd TXEN to MDI output Carrier Sense Turn-on t CSON delay Carrier Sense Turn-off t CSOFF Delay RX ...

Page 21

Pin PQFP dimension Note: Symbol Dimension (mm) A 3.3 00(max) A 0.100(min 2.85 0.127 2 b 0.26(min) 0.36(max) c 0.150 0.008 D 14.000 0.100 E 20.000 0.100 e 0.650 0.150 H 17.200 0.250 D H 23.200 ...

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