Texas Instruments TMUX646EVM Bedienungsanleitung

User’s Guide

TMUX646EVM User's Guide

ABSTRACT

This user's guide describes the characteristics, operation, and use of the TMUX646EVM evaluation module

(EVM), which is represented by TMUX646EVM in this user's guide. A complete schematic diagram, printed-

circuit board layouts, and bill of materials are included in this document.

Table of Contents

1 Introduction.............................................................................................................................................................................2

2 Information About Cautions and Warnings..........................................................................................................................3

3 Features of this EVM.............................................................................................................................................................. 4

4 EVM Images.............................................................................................................................................................................4

5 EVM Setup............................................................................................................................................................................... 6

6 PCB Layouts..........................................................................................................................................................................12

7 Schematics............................................................................................................................................................................16

8 Bill of Materials..................................................................................................................................................................... 20

9 Related Documentation........................................................................................................................................................20

List of Figures

Figure 1-1. TMUX646EVM: Topside............................................................................................................................................ 2

Figure 1-2. TMUX646EVM: Backside..........................................................................................................................................3

Figure 4-1. TMUX646EVM Front and Back................................................................................................................................. 4

Figure 5-1. TMUX646EVM Power Connections for U1 and U2...................................................................................................7

Figure 6-1. Top View Illustration of the TMUX646EVM Layout..................................................................................................12

Figure 6-2. First Internal Layer Illustration of the TMUX646EVM Layout.................................................................................. 13

Figure 6-3. Second Internal Layer Illustration of the TMUX646EVM Layout............................................................................. 14

Figure 6-4. Bottom Layer Illustration of the TMUX646EVM Layout...........................................................................................15

Figure 7-1. TMUX646EVM U1 Schematic (Editor View)............................................................................................................16

Figure 7-2. TMUX646EVM U1 Schematic (DNI View)...............................................................................................................17

Figure 7-3. TMUX646EVM U2 Schematic (Editor View)............................................................................................................18

Figure 7-4. TMUX646EVM U2 Schematic (DNI View)...............................................................................................................19

List of Tables

Table 5-1. Configurable Load Matrix............................................................................................................................................6

Table 5-2. 3-Pin Header: Signal to Pin Matrix..............................................................................................................................7

Table 5-3. Jumper ID to EVM Orientation Matrix......................................................................................................................... 7

Table 5-4. TMUX646EVM: Truth Table........................................................................................................................................ 8

Table 5-5. TMUX646EVM Board Configuration – Control Signals...............................................................................................8

Table 5-6. TMUX646EVM: Logic Levels...................................................................................................................................... 8

Table 5-7. TMUX646EVM Board Configuration – I/O Signals..................................................................................................... 9

Table 8-1. TMUX646EVM Bill of Materials.................................................................................................................................20

Trademarks

All trademarks are the property of their respective owners.

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TMUX646EVM User's Guide 1

1 Introduction

The TMUX646EVM allows for quick testing of the TMUX646 in the BGA (ZEC) package with easily configurable

loads for DC characterization and the option of testing one of the channels with SMA connectors by utilizing the

pads for SMA ports, a second TMUX646 in a BGA (ZEC) package, and termination resistors.

The top side of the TMUX646EVM

Figure 1-1. TMUX646EVM: Topside

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The back side of the TMUX646EVM

Figure 1-2. TMUX646EVM: Backside

2 Information About Cautions and Warnings

The information in the warning statement is provided for personal protection and the information in the caution

statement is provided to protect the equipment from damage. Read each caution and warning statement

carefully.

CAUTION

This EVM contains components that can potentially be damaged by electrostatic discharge. Always

transport and store the EVM in its supplied ESD bag when not in use. Handle using an antistatic

wristband. Operate on an antistatic work surface. For more information on proper handling, see

Electrostatic Discharge (ESD) application report.

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TMUX646EVM User's Guide 3

3 Features of this EVM

The EVM has the following features:

• A TMUX646 in a small BGA (ZEC) package

• 1 power supply decoupling capacitor attached (0.1 µF)

• Additional 0805 pad for additional supply decoupling capacitor.

• Quick prototyping and DC testing of the 36 pin TMUX646 in the BGA (ZEC) package

• All 34 signal paths have test points attached to allow for flexible measurements

• All 30 drain and source pins have 805 pads for differential or single ended loads

• All analog I/O and digital input pins have jumpers that connect to VDD and Ground

• Additional TMUX646ZEC IC pad with SMA pads for 1 differential channel (CLK) and termination resistor pads

for unused channels

4 EVM Images

TMUX646EVM Front and Back with component ID's shown.

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Figure 4-1. TMUX646EVM Front and Back

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TMUX646EVM User's Guide 5

5 EVM Setup

The following instructions are for setting up the EVM:

1. If you desire to use this EVM with all channels loaded, then solder down your chosen 0805 components to

the channels you wish to test. Table 5-1 describes which loads correspond to what pin on the TMUX646.

Table 5-1. Configurable Load Matrix

Pin Name 0805 Resistor Pad ID (SE) 0805 Capacitor Pad ID (D) 0805 Resistor Pad ID (D)

D1P R12 C4 R10

D1N R11 C4 R10

D2P R9 C3 R7

D2N R8 C3 R7

D3P R6 C2 R4

D3N R5 C2 R4

D4P R3 C1 R1

D4N R2 C1 R1

CLKP R14 C5 R13

CLKN R15 C5 R13

DA1P R21 C7 R19

DA1N R20 C7 R19

DA2P R24 C8 R22

DA2N R23 C8 R22

DA3P R27 C9 R25

DA3N R26 C9 R25

DA4P R30 C10 R28

DA4N R29 C10 R28

CLKAP R17 C6 R16

CLKAN R18 C6 R16

DB1P R36 C12 R34

DB1N R35 C12 R34

DB2P R39 C13 R37

DB2N R38 C13 R37

DB3P R42 C14 R40

DB3N R41 C14 R40

DB4P R45 C15 R43

DB4N R44 C15 R43

CLKBP R33 C11 R31

CLKBN R32 C11 R31

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2. Power the board by attaching a 1.65 V – 5.5 V power supply, current limited to 25 mA, with the positive

terminal attached to TP33 or TP34 at the top right of the board under the label U1 VDD. Attached the

negative terminal to TP35 or TP36 at the top right of the board above the label GND. The TMUX646 is now

powered. To power U2, attach the positive power terminal to TP39 or TP40. Figure 5-1 below shows the test

points circled in red.

TMUX646EVM Power Connections for U1 and U2. Both IC pads share the same ground connection

Figure 5-1. TMUX646EVM Power Connections for U1 and U2.

3. This EVM comes with shunts to connect the jumpers – The jumpers have three pins and are set up in the

following way.

Table 5-2. 3-Pin Header: Signal to Pin Matrix

Position 1 Position 2 Position 3

GND Floating VDD

With the EVM in the same orientation (as shown in Figure 4-1), the jumpers and their positions are oriented

according to Table 5-3. All headers have their respective 2nd pin in the center with a pin above and pin

below. This is the second position of the header.

Table 5-3. Jumper ID to EVM Orientation Matrix

Jumper ID IC ID Position 1 – (GND) Position 3 – (VDD)

J1 – J16 U1 LEFT RIGHT

J17 – J30 U1 RIGHT LEFT

J31, J32 U1 RIGHT LEFT

J33, J34 U2 BOTTOM TOP

4. Next, please refer to Table 5-4 below to prepare the EN and SEL pins to configure the channels.

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Table 5-4. TMUX646EVM: Truth Table

EN SEL Channels Selected

1 x Device Disabled

0 0 xP; xN <-> xAP; xAN Connected

xP; xN <-> xBP; xBN Disconnected

0 1 xP; xN <-> xBP; xBN Connected

xP; xN <-> xAP; xAN Disconnected

Please see Table 5-5 for jumper configurations on the SEL and EN pin.

Table 5-5. TMUX646EVM Board Configuration – Control Signals

Jumper ID Test Point ID IC – Pin Shunt Position 1 Shunt Position 2 Board Function

J31 TP31 U1 – /OE 1 2 U1 Enabled

3 2 U1 Disabled

N/A N/A Floating; Attach

External Enable

Source

J33 TP41 U2 – /OE 1 2 U2 Enabled

3 2 U2 Disabled

N/A N/A Floating; Attach

External Enable

Source

J32 TP32 U1 – SEL 1 2 U1 – A Channel

Connected

3 2 U1 – B Channel

Connected

N/A N/A Floating; Attach

External Select

Source

J34 TP42 U2 – SEL 1 2 U2 – A Channel

Connected

3 2 U2 – B Channel

Connected

N/A N/A Floating; Attach

External Select

Source

The TMUX646 has 1.8 V compatible logic thresholds, where digital signal levels are compatible for a 1.8 V

system, independent of supply voltage. Refer to Table 5-6 below for defined logic levels.

Table 5-6. TMUX646EVM: Logic Levels

Parameter Min Max

Input High Voltage 1.4 V 5.5 V

Input Low Voltage 0 V 0.5 V

5. Next, configure the multiplexer’s channels based on Table 5-7.

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Table 5-7. TMUX646EVM Board Configuration – I/O Signals

Jumper ID TP ID IC – Pin Shunt Position 1 Shunt Position 2 Board Function

J1 TP1 U1 – D4P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J2 TP2 U1 – D4N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J3 TP3 U1 – D3P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J4 TP4 U1 – D3N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J5 TP5 U1 – D2P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J6 TP6 U1 – D2N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J7 TP7 U1 – D1P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J8 TP8 U1 – D1N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J9 TP9 U1 – CLKP 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J10 TP10 U1 – CLKN 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J11 TP11 U1 – CLKAP 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J12 TP12 U1 – CLKAN 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J13 TP13 U1 – DA1P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

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TMUX646EVM User's Guide 9

Table 5-7. TMUX646EVM Board Configuration – I/O Signals (continued)

Jumper ID TP ID IC – Pin Shunt Position 1 Shunt Position 2 Board Function

J14 TP14 U1 – DA1N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J15 TP15 U1 – DA2P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J16 TP16 U1 – DA2N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J17 TP17 U1 – DA3P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J18 TP18 U1 – DA3N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J19 TP19 U1 – DA4P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J20 TP20 U1 – DA4N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J21 TP21 U1 – CLKBP 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J22 TP22 U1 – CLKBN 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J23 TP23 U1 – DB1N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J24 TP24 U1 – DB1P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J25 TP25 U1 – DB2N 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

J26 TP26 U1 – DB2P 3 2 IC Pin = VDD

2 1 IC Pin = GND

N/A N/A IC Pin = Float

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