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M88
User Manual
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Silicon Labs M88 User Manual

M88 Evaluation Kit
USER GUIDE
STO-DEV7227-HB REV. 2.1
© 2019 Silicon Labs, Inc. All Rights Reserved.
M88 Evaluation Kit User Guide Revision History
Rev
Date
Comment
1.0
2016-10-17
Included in FW release v1.0.0
1.1
2016-11-11
Included in FW release v1.0.1 and v1.0.2
1.2
2016-12-09
1.3
2017-02-16
Included in FW release v1.0.6
1.4
2017-03-07
Included in FW release v1.0.7
1.5
2017-04-20
Included in FW release v1.0.8
1.6
2017-07-18
Included in FW release v1.0.9
2.0
2019-06-04
Released with new Eval Kit model
2.1
2019-12-12
Included in FW release v1.0.19
Section
Changes since previous revision
7
Table 1. PPS out is 50 Ω
9.1
Pull-up is available on UTX and not on URX
10
Clarified jumper positions
Section
Changes since previous revision
All
New document template
All
Removed references to enclosure as board is now delivered without
11
Added description on usage of GNSS add-on board
13
Added application examples
17
Added descriptions on how to update FW
Section
Changes since previous revision
10
Corrected jumper selection for P308
Section
Changes since previous revision
9
Added information on pin 1 for the Trace Adapter.
18
Added picture on how to connect Trace Adapter.
Section
Changes since previous revision
12
Added picture of oscillator add-on board.
Section
Changes since previous revision
10
P402 and P401 were switched
8, 9, 10
Sorted out confusion with respect to COM port numbers.
7, 8
Clarification on which connector to use for single ended.
Revision History
STO-DEV7227-HB Rev. 2.1 2
M88 Evaluation Kit User Guide Revision History
16
Rewrote first section for clarity.
9.1
Added pin descriptions to on-board connectors
Section
Changes since previous revision
10
Removed restrictions in previous FW version.
12.1
Added values for which voltage control range to use.
STO-DEV7227-HB Rev. 2.1 3
M88 Evaluation Kit User Guide Table of Contents
Table of Contents
1 About this Document ............................................................................................................................ 7
2 Scope ..................................................................................................................................................... 7
3 General Description .............................................................................................................................. 7
4 Before you begin ................................................................................................................................... 8
5 Power .................................................................................................................................................... 8
6 Block diagram ........................................................................................................................................ 8
7 Front side connectors ......................................................................................................................... 10
8 Back side connectors........................................................................................................................... 11
9 Additional connectors ......................................................................................................................... 12
9.1 Connector pin descriptions ......................................................................................................... 13
10 Jumpers ........................................................................................................................................... 16
10.1 Inputs .......................................................................................................................................... 17
10.2 Reference .................................................................................................................................... 18
10.3 Outputs ....................................................................................................................................... 19
10.4 COM, TOD, PPS............................................................................................................................ 19
11 Add-on boards................................................................................................................................. 20
11.1 Oscillator board ........................................................................................................................... 20
11.1 GNSS board ................................................................................................................................. 20
11.2 Enabling the GNSS LED ................................................................................................................ 21
11.3 Check GNSS reception on the M88 ............................................................................................. 21
12 Connecting to the board ................................................................................................................. 21
13 Application examples ...................................................................................................................... 21
13.1 Set up the M88 Evaluation Kit as a E2E, Multicast PTP slave ..................................................... 21
13.2 Set up the M88 Evaluation Kit as a E2E, Unicast PTP slave ........................................................ 22
14 Using the PTP engine ...................................................................................................................... 24
15 Using the PLL ................................................................................................................................... 25
15.1 Configuration .............................................................................................................................. 25
15.2 Loading ........................................................................................................................................ 25
15.3 Controlling ................................................................................................................................... 25
16 Further configuration of the M88 Evaluation Kit ............................................................................ 25
17 Updating firmware on M88 Evaluation Kit ..................................................................................... 26
18 References ...................................................................................................................................... 26
STO-DEV7227-HB Rev. 2.1 4
M88 Evaluation Kit User Guide List of Figures
List of Figures
Figure 1. M88 Evaluation Kit (without Oscillator and GNSS add-on boards)................................................ 7
Figure 2. M88 Evaluation Kit block diagram ................................................................................................. 9
Figure 3. M88 Evaluation Kit front side connector placement. .................................................................. 10
Figure 4. M88 Evaluation Kit back side connector placement. ................................................................... 11
Figure 5. M88 Evaluation Kit board-top connector placement. ................................................................. 12
Figure 6. M88 Evaluation Kit jumper placement overview......................................................................... 16
Figure 7. Input selection jumpers ............................................................................................................... 17
Figure 8. Reference selection jumpers – NB pin 1 position on P307 .......................................................... 18
Figure 9. Output selection jumpers ............................................................................................................ 19
Figure 10. COM, TOD and PPS selection jumpers ....................................................................................... 19
Figure 11. Oscillator add-on board ............................................................................................................. 20
Figure 12. GNSS add-on board .................................................................................................................... 20
STO-DEV7227-HB Rev. 2.1 5
M88 Evaluation Kit User Guide List of Tables
List of Tables
Table 1. M88 Evaluation Kit front side connector descriptions. ................................................................. 10
Table 2. M88 Evaluation Kit back side connector description. ................................................................... 11
Table 3. M88 Evaluation Kit board-top connector description. ................................................................. 13
Table 4. COM2 connector pin description .................................................................................................. 13
Table 5. COM1 connector pin description .................................................................................................. 13
Table 6. CB Pro FP connector pin description ............................................................................................. 14
Table 7. SPI Master connector pin description ........................................................................................... 14
Table 8. SPI Slave connector pin description .............................................................................................. 14
Table 9. I/O Bus connector pin description ................................................................................................ 14
Table 10. PLL Control connector pin description ........................................................................................ 14
Table 11. GNSS Add-on Board System Connector pin description ............................................................. 15
Table 12. Oscillator Add-on Board System Connector pin description....................................................... 15
Table 13. M88 Evaluation Kit input selection jumpers - Grey options are default factory settings ........... 17
Table 14. M88 Evaluation Kit reference selection jumpers - Grey options are default factory settings.... 18
Table 15. M88 Evaluation Kit output selection jumpers - Grey options are default factory settings ........ 19
Table 16. M88 Evaluation Kit COM, TOD and PPS selection jumpers - Grey options are default factory
settings. ....................................................................................................................................................... 19
Table 17. Oscillator voltage control range .................................................................................................. 20
STO-DEV7227-HB Rev. 2.1 6
M88 Evaluation Kit User Guide About this Document
1 About this Document
This document describes the use of the M88 Evaluation Kit. Its purpose is to help a user to set up the
board electrically and mechanically and how to communicate to it. It’s not a complete guide for all functionality provided by the M88 module it’s carrying. For this we refer to [1].
2 Scope
This document covers the M88 Evaluation Kit Rev A carrying the M80 Rev B module and running M88 v1.0.19 FW and later. It also covers the oscillator add-on board that is mounted on the M88 Evaluation Kit.
3 General Description
The M88 Evaluation Kit is an evaluation board for the M88 module. The board makes it possible to control and monitor all functionality provided by the M88. The board is powered through a single 5V power supply (included) or through Power-over-Ethernet. It provides two Ethernet interfaces for communication to the network, including PTP. It has a USB port for serial communication, SMA connectors and ITU-T G.703 V.11 compliant RJ45 for PPSIN, PPSOUT, TODIN and TODOUT plus multiple SMA connectors for configurable input and output frequencies. It provides a debug interface that can be used with Silicon Labs' Trace Adapter (not included) for communication with Silicon Labs' Developer IDE and a SPI interface for programming of the Si5348 chip onboard the M88. It also provides several jumpers for configuration.
The M88 Evaluation Kit also have two expansion slots intended for alternative oscillators and GNSS receivers respectively.
Figure 1. M88 Evaluation Kit (without Oscillator and GNSS add-on boards)
STO-DEV7227-HB Rev. 2.1 7
M88 Evaluation Kit User Guide Before you begin
4 Before you begin
You will need the following to use the board:
• Power supply 5V, 3A – included
• Ethernet cables (SFP and fiber if you intend to use optical communication) – not included
• SMA cables – not included
• USB cable – included
• GNSS antenna – not included
• A PC with a terminal program such as TeraTerm or PuTTy – not included
Optional devices in case you plan to write and debug your own SW for the M88 and/or configure the Si5348 of the M88.
• Silicon Labs' Trace Adapter
• Silicon Labs Developer IDE
• SiLabs Trace Adapter
5 Power
The board only needs a single 5V supply and depending on what add-on boards that are used (some OCXO can consume considerable amount of current when warming up) we recommend using a power supply that can deliver 3A.
The board can also be powered by a PoE switch if connected to Port 1. This will supply adequate power in most cases except for when a large OCXO is used on an add-on board. The M88 Evaluation Kit has onboard regulators to provide all necessary voltages for the components on the M88 Evaluation Kit including the M88. There is a green LED indicating 3.3V to the left of the board when seen from the front panel and another LED indicating if power is supplied by PoE.
6 Block diagram
The block diagram below shows the connections the M88 Evaluation Kit and to some extent, for improved understanding the connections on the M88 module itself. In the picture JS means jumper select. See section 10.
STO-DEV7227-HB Rev. 2.1 8
M88 Evaluation Kit User Guide Block diagram
Figure 2. M88 Evaluation Kit block diagram
STO-DEV7227-HB Rev. 2.1 9
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