S100 Slave - Stacked Voltage Translator v1.0

This document shows the documentation for the Rhomb.io S100 Stacked Voltage Translator v1.0 Module. Preliminary version, use only for data updating or corrections.

Overview

The S100 Stacked Voltage Translator v1.0 Module is a Rhomb.io platform compatible module created to modify and condition the signals of other modules. It works as the interface between two modules which have two different voltage levels. The connection between the signals' supplier and the signals' receiver is done by the Rhomb.io standard connectors(two receptacle and two plug connectors of fifty pins each one). It includes four Voltage Translators (FXMA108), which are used to reconfigure some signals voltage.

The next figure show a 3D view for the S100 Stacked Voltage Translator v1.0 Module.


S100 Stacked Voltage Translator v1.0 Module 3DTOP.JPG


S100 Stacked Voltage Translator v1.0 Module 3DBOT.JPG

Applications:

  • Module communications, Interface.
  • IoT
  • User interface


Module specification

Key features

The "S100 Stacked Voltage Translator v1.0 Module" is a module that allows the connection between modules that were not able to be connected. When the voltage of the signals is high or low and needs to be conditioned, the "S100 Stacked Voltage Translator v1.0 Module" can be used to modify it between a range that depends on the FXMA108. In the "S100 Stacked Voltage Translator v1.0 Module", the voltage range is as high as 5,5V to as low as 1,65V. It is important to mention that the FXMA108 used in the "S100 Stacked Voltage Translator v1.0 Module" are bi-directional, so this module can be even used if it is needed to modify the A port tracks level or the B port tracks level.

Regarding the power supply, two main sources are used: VCCB and VIO_IN. To supply "VCCB" we can use "3V3", "2V8", "1V8" or "VSYS". All of these power supplies, come from the Rhomb.io module connectors as it is shown in the Block Diagram. There is a solder jumper for each power supply. All of them are connected by one side to each power supply and by the other side to "VCCB". You can choose "VCCB" by soldering one of the solder jumpers. By default "VCCB" is not connected to any power source. "VIO_IN" is a power source that comes from the Rhomb.io module connectors. The power sources' configuration should be carried out on the Rhomb.io core. Here it is the Block Diagram of the S100 Stacked Voltage Translator v1.0 Module :


S100 Stacked Voltage Translator v1.0 Module BlockDiagram.JPG

These are the serial communication ports reconfigured on the module: UART, SPI, I2C, QSPI, CAN, CAPT, INT and PWM. Before being connected to the Top Rhomb.io Connectors, all of them go through the voltage translators(FXM108). We can choose the output voltage depending on "VCCB". There are other ports : SDIO-A, SDIO-B, CLK32K, #NMI, RESET, AD, DIFF and USB, which are connected directly between the Top and Bottom Connectors.

Connectors

There are four connectors used in this module: "J101-BOT", "J102-BOT", "J101-TOP" and "J102-TOP". All of them are Connectors of fifty pins each one. "J101-BOT" and "J102-TOP" are plug connectors, and "J102-BOT", "J101-TOP" are receptacles. To make this module be an interface between others the connectors are placed in a specific way, as we can see in the image below.

The next figure identifies the main parts of the S100 Stacked Voltage Translator v1.0 Module. It can be found specific information for some of those parts on the following sections.


S100 Stacked Voltage Translator v1.0 Module PartsTop.jpg


S100 Stacked Voltage Translator v1.0 Module PartsBot.jpg

Voltage Translators

The FXMA108 is a configurable dual-voltage supply translator designed for both unidirectional and bi-directional voltage translation between two logic levels. The device allows translation between voltages as high as 5.5V to as low as 1.65V. The A port tracks the VCCA level and the B port tracks the VCCB level.

Features:

  • Bi-directional Interface
  • Fully Configurable: Inputs and Outputs Track VCC
  • Non-Preferential Power-Up; Either VCC may be Powered-Up first
  • Outputs Remain in 3-State Until Active VCC Level is Reached
  • Outputs Switch to 3-state if Either VCC is at GND
  • 80 Mbps Throughput when translatin between 2.5V and 5.0V

Applications:

  • Cell Phones
  • PDA
  • Digital Camera
  • Portable GPS
  • Storage

In the "S100 Stacked Voltage Translator v1.0 Module" there are four voltage translators to reconfigurate some of the signals used in the module: UART, SPI, I2C, QSPI, CAN, CAPT, INT and PWM.

Each FXMA108 has 20 pins, which configuration is shown in the next table:

-VOLTAGE TRANSLATOR 1 (U1)

Pin Signal Pin Signal  !
1 VIO_IN 20 VCCB
2 QSPI_CS0(IN) 19 QSPI_CS0(OUT)
3 QSPI_IO3(IN) 18 QSPI_IO3(OUT)
4 QSPI_IO2(IN) 17 QSPI_IO2(OUT)
5 QSPI_CLK(IN) 16 QSPI_CLK(OUT)
6 QSPI_IO1(IN) 15 QSPI_IO1(OUT)
7 QSPI_IO0(IN) 14 QSPI_IO0(OUT)
8 UART-B_RXD(IN) 13 UART-B_RXD(OUT)
9 UART-B_TXD(IN) 12 UART-B_TXD(OUT)
10 GND 11 #OE

See the image below:
S100 Stacked Voltage Translator v1.0 Module VTranslator1.JPG

-VOLTAGE TRANSLATOR 2 (U2)

Pin Signal Pin Signal  !
1 VIO_IN 20 VCCB
2 UART-A_RTS(IN) 19 UART-A_RTS(OUT)
3 UART-A_RXD(IN) 18 UART-A_RXD(OUT)
4 UART-A_TXD(IN) 17 UART-A_TXD(OUT)
5 UART-A_CTS(IN) 16 UART-A_CTS(OUT)
6 CAPT0(IN) 15 CAPT0(OUT)
7 CAPT1(IN) 14 CAPT1(OUT)
8 CAN-A_RX(IN) 13 CAN-A_RX(OUT)
9 CAN-A_TX(IN) 12 CAN-A_TX(OUT)
10 GND 11 #OE

See the image below:
S100 Stacked Voltage Translator v1.0 Module VTranslator2.JPG


-VOLTAGE TRANSLATOR 3 (U3)

Pin Signal Pin Signal  !
1 VIO_IN 20 VCCB
2 I2C_SDA(IN) 19 I2C_SDA(OUT)
3 I2C_SCL(IN) 18 I2C_SCL(OUT)
4 SPI-A_MISO(IN) 17 SPI-A_MISO(OUT)
5 SPI-A_MOSI(IN) 16 SPI-A_MOSI(OUT)
6 SPI-A_CLK(IN) 15 SPI-A_CLK(OUT)
7 SPI-A_CS0(IN) 14 SPI-A_CS0(OUT)
8 INT0(IN) 13 INT0(OUT)
9 PWM0(IN) 12 PWM0 (OUT)
10 GND 11 GND

See the image below:
S100 Stacked Voltage Translator v1.0 Module VTranslator3.JPG

-VOLTAGE TRANSLATOR 4 (U4)

Pin Signal Pin Signal  !
1 VIO_IN 20 VCCB
2 GPIO-IO-A_00(IN) 19 GPIO-IO-A_00(OUT)
3 GPIO-IO-A_01(IN) 18 GPIO-IO-A_01(OUT)
4 GPIO-IO-A_02(IN) 17 GPIO-IO-A_02(OUT)
5 GPIO-IO-A_03(IN) 16 GPIO-IO-A_03(OUT)
6 GPIO-IO-A_04(IN) 15 GPIO-IO-A_04(OUT)
7 GPIO-IO-A_05(IN) 14 GPIO-IO-A_05(OUT)
8 GPIO-IO-A_06(IN) 13 GPIO-IO-A_06(OUT)
9 GPIO-IO-A_07(IN) 12 GPIO-IO-A_07(OUT)
10 GND 11 #OE

See the image below:
S100 Stacked Voltage Translator v1.0 Module VTranslator4.JPG

NOTE: It is important to mention, that the signals configured as outputs (OUT) in the table, are the signals that come from the Top Rhomb.io Connectors to the Voltage Translators. The signals configured as inputs (IN) in the table, are the signals that come from the Bottom Rhomb.io connectors to the Voltage Translators. The FXMA108 are Bi-directional so the Output signals could work as well as inputs, and the inputs as well as outputs.


Solder Jumpers

There are four solder jumpers in the "S100 Stacked Voltage Translator v1.0 Module". They are used to connect the different power supplies: "3V3", "2V8", "1V8" or "VSYS" to "VCCB". Any of them is soldered. "VCCB" can be chosen by soldering one of them, as it was mentioned in "Module specification";"Key features".

See the image below:
S100 Stacked Voltage Translator v1.0 Module Power.JPG

Connections

GPIO

The following table summarizes the GPIOs used on the S100 Stacked Voltage Translator v1.0 Module.

Rhomb.io pinout Signal (module) Device  !
GPIO-A_00 GPIO-A_00 FXMA108
GPIO-A_01 GPIO-A_01
GPIO-A_02 GPIO-A_02
GPIO-A_03 GPIO-A_03
GPIO-A_04 GPIO-A_04
GPIO-A_05 GPIO-A_05
GPIO-A_06 GPIO-A_06
GPIO-A_07 GPIO-A_07


Serial interfaces

The following table indicates the available serial interfaces on the Rhomb.io standard. The table shows the nomenclature used on the Rhomb.io standard and its corresponding on the schematic.

Signal (Rhomb.io) Signal (module) Used by Signal (Rhomb.io) Signal (module) Used by
I2C SPI
I2C-A_SDA I2C-A_SDA FXMA108 SPI-A_MISO SPI_MISO FXMA108
I2C-A_SCL I2C-A_SCL SPI-A_MOSI SPI-A_MOSI
#NMI (I2C_INT) #NMI SPI-A_CLK SPI-A_CLK
UART SPI-A_CSn SPI-A_CS0
UART-A_RX UARTA_RXD FXMA108 SPI_INT INT0
UART-A_TX UARTA_TXD USB
UART-B_RX UARTD_RXD USB_N
UART-B_TX UARTD_TXD USB_P
AD PWM
AD-A AD0 PWM PWM0 FXM108
CAN CAPT
CAN-A CAN-A_RXD FXMA108 CAPT CAPT0 FXMA108
CAN-A CAN-A_TX D CAPT CAPT1



SDIO

The Secure Digital Input Output (SDIO) interfaces are used on the S100 Stacked Voltage Translator v1.0 Module. The SDIO signals are connected between Bottom and Top directly. They are not connected through the Voltage Translators. The table below shows the connections:

Signal (Rhomb.io) Signal (module) BOTTOM Pin-Connector TOP Pin-Connector!
SDIO-A SDIO-A_CMD 2-J101 2-J101 TOP
SDIO-A_CDN P3-J101 BOT P3-J101 TOP
SDIO-A_DATA3 P4-J101 BOT P4-J101 TOP
SDIO-A_DATA2 P5-J101 BOT P5-J101 TOP
SDIO-A_CLK P6-J101 BOT P6-J101 TOP
SDIO-A_DATA1 P7-J101 BOT P7-J101 TOP
SDIO-A_DATA0 P8-J101 BOT P8-J101 TOP
SDIO-B SDIO-B-DATA3 P10-J101 BOT P10-J101 TOP
SDIO-B_DATA0 P12-J101 BOT P12-J101 TOP
SDIO-B_DATA2 P14-J101 BOT P14-J101 TOP
SDIO-B_DATA01 P16-J101 BOT P16-J101 TOP



Power

As per the supply lines used on the board, there is a summary on the next table.

Signal (Rhomb.io) Signal (module) Voltage (V) Used
1V8 150mA VCCB 1.8 Yes/No
2V8 150mA VCCB 2.8 Yes/No
3V3 VCCB 3.3 Yes/No
VSYS VCCB 3,5-5,5 Yes/No
BAT_RTC BAT_RTC 1.5 Yes/No
VBAT VBAT 3,7-4,2 Yes/No
VIO_IN VCCA Yes/No
VIO_OUT VIO_OUT Yes/No


Other signals

All the Rhomb.io Signals, are used in the "100 Stacked Voltage Translator v1.0 Module". It works as an interface between modules so all the signals are needed.

Getting started

[Under construction]

Schematics

Click the image below to download the schematic files.

Bill of materials

Click the image below to download the BOM files.

Fabrication files

Click the image below to download the fabrication files.

Part number package marking

[Under construction]

Mechanical specifications

Board


S100 Stacked Voltage Translator v1.0 Module ALLViews.jpg

Connector

[Under construction]

Warranty

  • Precaution against Electrostatic Discharge. When handling Rhomb.io products, ensure that the environment is protected against static electricity. Follow the next recommendations:
  1. The users should wear anti-static clothing and use earth band when manipulating the device.
  2. All objects that come in direct contact with devices should be made of materials that do not produce static electricity that would cause damage.
  3. Equipment and work table must be earthed.
  4. Ionizer is recommended to remove electron charge.
  • Contamination. Be sure to use semiconductor products in the environment that may not be exposed to dust or dirt adhesion.
  • Temperature/Humidity. Semiconductor devices are sensitive to environment temperature and humidity. High temperature or humidity may deteriorate semiconductor devices characteristics. Therefore avoid storage or usage in such conditions.
  • Mechanical Shock. Care should be exercised not to apply excessive mechanical shock or force on the connectors and semiconductors devices.
  • Chemical. Do not expose semiconductor device to chemical because reaction to chemical may cause deterioration of device characteristics.
  • Light Protection. In case of non-EMC (Epoxy Molding Compound) package, do not expose semiconductor IC to strong light. It may cause devices malfunction. Some special products which utilize the light or have security function are excepted from this specification.
  • Radioactive, Cosmic and X-ray. Semiconductor devices can be influenced by radioactive, cosmic ray or X-ray. Radioactive, cosmic and X-ray may cause soft error during device operation. Therefore semiconductor devices must be shielded under environment that may be exposed to radioactive, cosmic ray or X-ray.
  • EMS (Electromagnetic Susceptibility). Note that semiconductor devices characteristics may be affected by strong electromagnetic waves or magnetic field during operation.

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