ML6698CQ Micro Linear, ML6698CQ Datasheet

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ML6698CQ

Manufacturer Part Number
ML6698CQ
Description
100BASE-TX physical layer with 5-bit interface
Manufacturer
Micro Linear
Datasheet

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GENERAL DESCRIPTION
The ML6698 is a high-speed physical layer transceiver
that provides a 5-bit (or symbol) interface to unshielded
twisted pair cable media. The ML6698 is well suited for
adapter card applications using the DEC 21143, the
Macronix MX98713, or equivalent Media Access
Controllers (MACs). The ML6698 may be used in other
100BASE-TX applications requiring the 5-bit interface as
well as FDDI-over-copper applications.
The ML6698 integrates 125MHz clock recovery/
generation, receive adaptive equalization, baseline
wander correction and MLT-3/10BASE-T transmitter.
BLOCK DIAGRAM
16
44
11
13
15
2
3
4
5
6
8
9
TSM4
TSM3
TSM2
TSM1
TSM0
TXC
RXC
RSM4
RSM3
RSM2
RSM1
RSM0
100BASE-TX Physical Layer with 5-Bit Interface
DESERIALIZER
SERIALIZER
(PLCC Pin Configuration)
NRZI TO NRZ DECODER
CLOCK SYTHESIZER
CLOCK AND DATA
CONTROL LOGIC
NRZI TO MLT-3
NRZ TO NRZI
25
RECOVERY
ENCODER
AND
42
FEATURES
*Some Packages Are End Of Life As Of August 1, 2000
7
5-bit (or symbol) parallel interface
Compliant to IEEE 802.3u 100BASE-TX standard
Compliant to ANSI X3T12 TP-PMD (FDDI) standard
Single-jack 10BASE-T/100BASE-TX solution when used
with external 10Mbps PHY
125MHz receive clock recovery/generation
Baseline wander correction
Adaptive equalization and MLT-3 encoding/decoding
Supports full-duplex operation
TWISTED PAIR DRIVER
100BASE-TX/10BASE-T
BLW CORRECTION
MLT-3 DECODER
LOOPBACK MUX
EQUALIZER
41
40
ML6698*
TPOUTN
TPOUTP
CMREF
RGMSET
SDO
TPINN
TPINP
RTSET
May 1997
38
37
39
30
24
34
33
31
1

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ML6698CQ Summary of contents

Page 1

Physical Layer with 5-Bit Interface GENERAL DESCRIPTION The ML6698 is a high-speed physical layer transceiver that provides a 5-bit (or symbol) interface to unshielded twisted pair cable media. The ML6698 is well suited for adapter card applications using the ...

Page 2

ML6698 PIN CONFIGURATION PWRDN RSM4 RSM3 DGND1 RSM2 DVCC1 RSM1 DGND2 RSM0 RXC DGND3 PWRDN RSM4 RSM3 DGND1 RSM2 DVCC1 RSM1 DGND2 RSM0 RXC DGND3 2 ML6698 44-Pin PLCC (Q44 ...

Page 3

PIN DESCRIPTION (Pin numbers for TQFP package in parentheses) PIN NAME 1 (39) AGND1 2-6 (40-44) TSM<4:0> PWRDN 7 (1) 8,9, (2, 3, RSM<4:0> 11,13 (4) DGND1 12 (6) DVCC1 14 (8) DGND2 16 (10) ...

Page 4

ML6698 PIN DESCRIPTION (Continued) PIN NAME 39 (33) CMREF 40,41 (34,35) 10BTTXINN/P 10BASE-T transmit waveform inputs. The ML6698 presents a linear copy of the input LPBK 42 (36) 43 (37) AVCC1 44 (38) TXC 4 DESCRIPTION Receiver common-mode reference output. ...

Page 5

ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. V Supply Voltage Range ................... GND –0. ...

Page 6

ML6698 DC ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER Transmitter (Continued) X TPOUTP/N Differential Output ERR Current Error X TPOUTP/N 100BASE-X Output CMP100 Current Compliance Error V TPOUTP/N 10BASE-T Output OCM10 Voltage Compliance Range V 10BTTXNN/P Input ICM10 Common-Mode Voltage Range Power Supply ...

Page 7

AC ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER MII (Media-Independent Interface Output Clock Frequency BTOL Tolerance t TXC pulse width HIGH TPWH t TXC pulse width LOW TPWL t RXC pulse width HIGH RPWH t RXC pulse width LOW RPWL t ...

Page 8

ML6698 t TPWH TXC TSM<4:0> RXC RSM<4:0> TPWL t TPS Figure TPWH TPWL RPCF t t RCS RCM Figure 3. t TPH t RPCR ...

Page 9

FUNCTIONAL DESCRIPTION TRANSMIT SECTION 100BASE-TX Operation The transmitter accepts scrambled 5-bit symbols clocked in at 25MHz and outputs MLT-3 signals onto the twisted-pair media at 100Mbps. The on-chip transmit PLL converts a 25MHz TTL-level clock at TXC to an internal ...

Page 10

ML6698 PWRDN 8 RSM4 9 RSM3 10 DGND1 11 RSM2 ML6698 12 U1 DVCC1 13 RSM1 14 DGND2 15 RSM0 16 RXC 17 DGND3 18 19 ...

Page 11

PHYSICAL DIMENSIONS 0.685 - 0.695 (17.40 - 17.65) 0.650 - 0.656 (16.51 - 16.66) 1 PIN 1 ID 0.042 - 0.048 (1.07 - 1.22 0.050 BSC (1.27 BSC) 0.026 - 0.032 (0.66 - 0.81) 0.013 - 0.021 (0.33 ...

Page 12

... ML6698 ORDERING INFORMATION PART NUMBER ML6698CQ (End Of Life) ML6698CH © Micro Linear 1997 is a registered trademark of Micro Linear Corporation Products described in this document may be covered by one or more of the following patents, U.S.: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; 5,508,570; 5,510,727; 5,523,940; 5,546,017; 5,559,470; 5,565,761; 5,592,128; 5,594,376; Japan: 2598946; 2619299. Other patents are pending. ...

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