Silicon Laboratories Si53154-EVB Manual de usuario

Si53154-EVB

Si53154 EVALUATION BOARD USER’SGUIDE

Description

The Si53154 is a four port PCIe clock buffer compliant

to the PCIe Gen1, Gen2 and Gen3 standards. The

Si53154 is a 24-pin QFN device that operates on a

3.3 V power supply and can be controlled using SMBus

signals along with hardware control input pins. The

device is spread aware and accepts a frequency spread

differential clock frequency range from 100 to 210 MHz.

The connections are described in this document.

EVB Features

This document is intended to be used in conjunction

with the Si53154 device and data sheet for the following

tests:

PCIe Gen1, Gen2, Gen3 compliancy

Power consumption test

Jitter performance

Testing out I2C code for signal tuning

In-system validation where SMA connectors are

present

Si53154

SRC3

connection

for

application

SRC2

connection

for

application

SRC1

connection for

application

VDD = 3.3V

power supply

GND

SDATA

SCLK

SRC0

connection for

application

DIFF3 Output Enable

DIFF1 Output Enable

DIFF2 Output Enable

DIFF0 Output Enable

Power connectors

Differential

Clock Input

Si53154-EVB

2 Rev. 0.1

1. Front Panel

Figure 1. Evaluation Module Front Panel

Table 1. Input Jumper Settings

Jumper Label Type Description

OE0 I OE0, 3.3 V Input for Enabling DIFF0 Clock Output.

1 = DIFF0 enabled, 0 = DIFF0 disabled.

OE1 I OE1, 3.3 V Input for Enabling DIFF1 Clock Output.

1 = DIFF1 enabled, 0 = DIFF1 disabled.

OE2 I OE2, 3.3 V Input for Enabling DIFF2 Clock Output.

1 = DIFF2 enabled, 0 = DIFF2 disabled.

OE3 I OE3, 3.3 V Input for Enabling DIFF3 Clock Output.

1 = DIFF3 enabled, 0 = DIFF3 disabled.

SDATA I/O SMBus-Compatible SDATA.

SCLK I SMBus-Compatible SCLOCK.

I2C connect -For I2C read and

write. In sequence SData, Gnd,

SCLK from left to right

3.3V Power Supply Connector

VDD Connectors OE_DIFF3 hardware input

control for DIFF3 out

DIFF3 Differential output

DIFF2 Differential output

DIFF1 Differential output

DIFF0 Differential output

Differential Buffer Input

for on Si53154-EVB only

No Connect

OE0 hardware input

control for DIFF0 output

OE1 hardware input

control for DIFF1 output

OE2 hardware input

control for DIFF2 output

Si53154 device mount

GND Connector

Si53154-EVB

Rev. 0.1 3

1.1. Generating DIFF Outputs from the Si53154

Upon power-on of the device if the differential input is applied and input pins are left floating, by default all DIFF

outputs DIFF[0:3] are ON. The input pin headers have clear indication of jumper settings for setting logic low (0)

and high (1) as shown in the figure below, the jumper placed on middle and left pin will set input OE0 to low; and

jumper placed on middle and right pin will set input OE0 to high.

The output enable pins can be changed on the fly to observe outputs stopped cleanly. Input functionality is

explained in detail below.

1.1.1. OE [0:3] Inputs

The output enable pins can change on the fly when the device is on. Deasserting (valid low) results in

corresponding DIFF output to be stopped after their next transition with final state low/low. Asserting (valid high)

results in corresponding output that was stopped are to resume normal operation in a glitch-free manner.

Each of the hardware OE [0:3] pins are mapped via I2C to control bit in Control register. The hardware pin and the

enable the DIFF output. Both of these form an “AND” function to disable or enable the DIFF output. The DIFF

outputs and their corresponding I2C control bits and hardware pins are listed in Table 2.

Table 2. Output Enable Control

I2C Control Bit Output Hardware Control Input

Byte1 [bit 2] DIFF0 OE0

Byte1 [bit 0] DIFF1 OE1

Byte2 [bit 7] DIFF2 OE2

Byte2 [bit 6] DIFF3 OE3



Si53154-EVB

4 Rev. 0.1

2. Schematics

Figure 2. QFN-24 Device Connection

Figure 3. Device Power Supply

DUTGND

XTL P/N:

ECS-250-20-5PXDU-F-TR

Use SMD footprint

DUTGND

For Si52144,R10 open

For Si53154,R11 open

VDD1

VDD6

VDD12

VDD17

VDD21

DIFF0

DIFF0#

DIFF1

DIFF1#

DIFF2

DIFF2#

DIFF3

DIFF3#

SCLK

SDATA

OE2

OE0

OE3

OE1

XOUT_DIFFIN

XIN_DIFF IN#

SSON

VDD1

YC2

YC1

0.1uF

R11 NI

R10

0.1uF

Si53154

EPAD

DIFF2 14

OE1

XOUT/DIFFIN 22

VDD

OE2

OE3

OE0

DIFF1# 11

DIFF1 10

DIFF0# 9

DIFF0 8

VDD21

21 VDD17

17 VDD12

12 VDD6

6VDD1

VSS4

XIN/DIFFIN# 23

SCLK

SDA

VSS24

DIFF3# 15

DIFF3 16

DIFF2# 13

VCC_3.3V

VDD1

VDD21

VDD6

VDD12

VDD17

0.1uF

10uF

JP4

JUMPER

10uF

C16

1uF

GND1

HEADER 1x1

TP4

JP3

JUMPER

C15

1uF

C14

1uF

VDD_3.3V1

HEADER 1x1

C17

1uF

C13

1uF

JP2

JUMPER

TP5

JP1

JUMPER

TP1 TP2

C12

10uF

C11

10uF

JP5

JUMPER

10uF

TP3

C10

10uF

Si53154-EVB

Rev. 0.1 5

Figure 4. Clock and Control Signals

Figure 5. Differential Clock Signals

SCLK/SDATA

DUTGND

VDD

GND

VDD

GND

VDD

GND

VDD

GND

DUTGND

OE2

OE0

OE3

OE1

DUTGND

SSON

DUTGND

VDD

GND

VDD_3.3V

OE2

OE0

OE3

OE1

SSON

SCLK

SDATA

XIN_ D IF F IN#

XOUT_DIFFIN

XOUT _D IFF IN1

SMA

R24

10K

HEADER 1 x3

R20

10K

R23

10K

XIN_ D IF F IN# 1

SMA

HEADER 1x3

R17

10K

R15

10K

R16

10K

HEADER 1x3

L1 SHOULD BE

SHORT AS POSSIBLE

L1 SHOULD BE

SHORT AS POSSIBLE

L1 SHOULD BE

SHORT AS POSSIBLE

L1 SHOULD BE

SHORT AS POSSIBLE

DUTGND

DIFF0

DIFF0#

DIFF1#

DIFF1

DIFF2#

DIFF2

DIFF3#

DIFF3

C28

2.0pF

DIFF0_1

SMA

C33

2.0pF

C30

2.0pF

C27

2.0pF

DIFF1_1

SMA

DIFF3#_1

SMA

DIFF2#_1

SMA

C32

2.0pF

C29

2.0pF

C34

2.0pF

DIFF3_1

SMA

DIFF1#_1

SMA

DIFF2_1

SMA

DIFF0#_1

SMA

C31

2.0pF

Disclaimer

Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers

using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific

device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories

reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy

or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply

or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific

written consent of Silicon Laboratories.A"Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected

to result in significant personal injury or death. Silicon Laboratories products are generally not intended for military applications. Silicon Laboratories products shall under no

circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons.

Trademark Information

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thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZMac®, EZRadio®, EZRadioPRO®, DSPLL®, ISOmodem ®, Precision32®, ProSLIC®, SiPHY®,

USBXpress® and others are trademarks or registered trademarks of Silicon Laboratories Inc. ARM, CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of

ARM Holdings. Keil is a registered trademark of ARM Limited. All other products or brand names mentioned herein are trademarks of their respective holders.

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