MX98704EC MCNIX [Macronix International], MX98704EC Datasheet

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MX98704EC

Manufacturer Part Number
MX98704EC
Description
100BASE-TX PHYSICAL DATA TRANSCEIVER
Manufacturer
MCNIX [Macronix International]
Datasheet
1.0 FEATURES
• Full-Duplex Operation
• Generates 125-Mhz Transmit Clock and 25-Mhz SYMCLK
• Converts 5-Bit Parallel Transmit Data to 1-Bit Serial Data
• Converts Transmit NRZ Data to NRZI Data
• Loopback and Transmitter-Off Modes
• Recovers 125-MHz Clock from Incoming serial NRZI Data Stream
• Reclocks Incoming Serial NRZI Data Stream Using Recovered Clock
• Converts Received Serial Bit Stream to 5-Bit Paralled Form
• Converts NRZI data to NRZ
• Generates 25-MHz Receive Clock
• Package type
2.0 GENERAL DESCRIPTION
The 100Base-Tx Physical Data Transceiver (PDTR) includes the Physical Data Transmitter (PDT) and the Physical Data
Receiver (PDR). The PDT converts encoded symbols into a serial NRZI data stream. The on-chip PLL generates a bit
rate clock from the TCLKIN or crystal reference. The PDR uses a built-in clock recovery PLL to extract clock information
from the received data stream. The recovered clock is used for serial-to-parallel data conversion.
2.1
P/N : PM0351
-52 PLCC
-52 PQFP
FUNCTIONAL BLOCK DIAGRAM
SYMCLK
XTAL1,
XTAL2
TCLKIN
RDAT4-0
TEST
LPBKB
RSCLK
TDAT4-0
Input
Register
25 Mhz
Crystal
Oscillator
Output
Register
Divided by 5
Control Logic MUX
Normal Mode
Test & Loopback
Data Transceiver Functions Block Diagram
Clock Multiplier (PLL)
Shifter
Shifter
Clock
Generator
1
NRZ/
NRZI
Clock & Data
Recovery
(PLL)
NRZ/
NRZI
PHYSICAL DATA TRANSCEIVER
Media
Interface
Output
Control
Signal
Detect
RDH, RDL
MX98704
MX98704
SDO
TXEN
SDI
TDH, TDL
PRELIMINARY
100BASE-TX
REV. 1.4, SEP. 15, 1997
INDEX

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MX98704EC Summary of contents

Page 1

FEATURES • Full-Duplex Operation • Generates 125-Mhz Transmit Clock and 25-Mhz SYMCLK • Converts 5-Bit Parallel Transmit Data to 1-Bit Serial Data • Converts Transmit NRZ Data to NRZI Data • Loopback and Transmitter-Off Modes • Recovers 125-MHz Clock ...

Page 2

BASE-TX HUB APPLICATION TD(0:4) MX98741 SD (Repeator Controller) RD(0:4) 100 BASE-TX HUB SYSTEM DIAGRAM 2.1.2 10/100-TX NIC APPLICATION TD(0:4) MX98713 SD (MAC) RD(0:4) 10BASE-T TRANSCEIVER 2.2 SYSTEM APPLICATION The MX98704 can be used in 100 BASE-TX HUB application, ...

Page 3

PIN ASSIGMENT 3.1 PIN ASSIGNMENT-52 LEAD PLASTIC LEADED CHIP CARRIER 3.2 PIN ASSIGNMENT-52 PQFP OP1 SDO RDA0 NC RDA1 VDD RDA2 SDI RDA3 NC RDA4 MX98704 RDL TS RDH TDA0 VDD TDA1 NC ...

Page 4

PIN DESCRIPTIONS MX Physicial Data Transceiver (PDTR) Function Pin PIN (PLCC) PIN (PQFP) PIN NAME TYPE 1 46 GND 2 47 VDD 3 48 GND 4 49 Test 5 50 VDD GND 8 1 ...

Page 5

PIN (PLCC) PIN (PQFP) PIN NAME 25 18 Test 26 19 GND 27 20 VDD 28 21 GND 29 22 VDD 30 23 GND 31 24 OP3 32 25 SYMCLK 33 26 TXEN 34 27 TCLKIN 35-39 28-32 TDAT4-0 40 ...

Page 6

FUNCTIONAL DESCRIPTION Functional block diagram of the complete chip. TDAT4-0 SYMCLK XTAL1, XTAL2 TCLKIN RDAT4-0 RSCLK TEST LPBKB 5.1 NORMAL OPERATION MODE The 5-bit data symbols to be transmitted are input from the PDTR chip on TDAT4-TDAT0.. The 5-bit ...

Page 7

The SDI input qualifies the data at RDH/ RDL. When SDI is LOW, the PDR uses SYMCLK as the PLL input reference. The LPBKB input selects the data source between RDH/ RDL and internal. When LPBKB is LOW, the SDI ...

Page 8

SIGNAL DETECT (SD) SDO is a level translation of SDI and indicates whether the receiver on SDI is receiving enough energy to produce a correct output. When SDO is not asserted low, RDAT4-RDAT0 are forced low. The system is ...

Page 9

DC ELECTRICAL CHARACTERISTICS CHARACTERISTIC Supply Voltage Input Voltage Low Input Voltage High Output Voltage Low Output Voltage High ECL Output Voltage High ECL Output Voltage Low Power Supply Current Supply Voltage Purity 7.3 PARALLEL INTERFACE PARAMETERS NUM 1 2 ...

Page 10

PARALLEL INTERFACE TIMING DIAGRAM RSCLK RDATA4-RDATA0 SYMCLK (TCLKIN) TDATA4-TDATA0 7.4 TCLKIN TIMING PARAMETERS NUM 7.4.1 TCLKIN TIMING 20V 0. VALID VALID VALID PARAMETER TCLKIN Period TCLKIN ...

Page 11

... ECL TIMING PARAMETERS NUM 14 15 7.5.1 ECL TIMING 4.0V 3.3V 8.0 ORDER INFORMATION PARTS NO. PACKAGE MX98704QC 52-PIN PLCC MX98704EC 52-PIN PQFP PARAMETER ECL Rise Time ECL Fall Time INDEX MX98704 MX98704 MIN MAX UNIT 0.9 3.0 ns 0.9 3.0 ns ...

Page 12

PACKAGE INFORMATION 9.1 52-PIN PLCC ITEM MILLIMETERS INCHES D 20.066 .790 D1 19.126 .753 E 20.066 .790 E1 19.126 .753 D2 18.034 .710 A 4.572 .180 A1 2.667 .105 H .762 .03 I 1.27 .05 K 0.457 .018 NOTE: ...

Page 13

PQFP ITEM MILLIMETERS INCHES A1 0.25 0.01 A2 2.05 0.81 b 0.3 0.012 D 10 0.394 E 10 0.394 e 0.65 0.026 Hd 13.2 0.52 He 13.2 0.52 L 0.8 0.031 L1 1.6 0.063 NOTE: Each lead centerline ...

Page 14

MACRONIX INTERNATIONAL CO., LTD HEADQUARTERS : TEL : +886-3-578-8888 FAX : +886-3-578-8887 EUROPE OFFICE : TEL : +32-2-456-8020 FAX : +32-2-456-8021 JAPAN OFFICE : TEL : +81-44-246-9100 FAX : +81-44-246-9105 SINGAPORE OFFICE : TEL : +65-747-2309 FAX : +65-748-4090 TAIPEI ...

Page 15

ITEM MILLIMETERS INCHES D 12.535 .492 D1 12.015 .452 E 12.535 .492 E1 12.015 .452 D2 10.7 .420 A 4.38 .172 H .510 .020 I 1.27 .050 K 0.455 .018 NOTE: Each lead centerline is located within .25mm[.01 inch] of ...

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