xCORE-200 General Purpose sliceKIT Hardware Manual
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- One XA-SK-GPIO Slice Card
- A variety of XMOS ports of 1 bit, 4 bit and 8bit type are exposed for access via 0.1” headers.
- Access to 4 LEDs via a 4 bit port
- Two push buttons are connected via a 4-bit port
- A small prototyping area is provided
- A pair of 1 bit ports (1 each for RX and TX) are used with an RS232 transceiver and DB9 connector to provide a standard UART terminal running up to 115.2 KBaud which can be connected to any PC COM port or Serial-to-USB adapter.
- An ADC with a standard 2-wire interface is provided, with an external linearised thermistor connected to the first ADC channel. The remaining 3 ADC channels are exposed on testpoints.
This table shows the port mapping for each of the Slice Card Signal IO, and the Slicekit Slot connector pin it is located on.
Function |
STAR |
TRIANGLE |
SQUARE |
CIRCLE |
PIN |
Description |
---|---|---|---|---|---|---|
GPIO_0 |
NC |
1A |
NC |
1A |
B2 |
1 Bit port free for GPIO |
GPIO_1 |
NC |
1D |
NC |
1D |
B4 |
1 Bit port free for GPIO |
GPIO_2 |
NC |
1E |
NC |
1E |
A3 |
1 Bit port free for GPIO |
GPIO_3 |
NC |
1H |
NC |
1H |
A4 |
1 Bit port free for GPIO |
UART_TX |
1C |
1K |
1C |
1K |
B10 |
RS232 TX |
UART_RX |
1G |
1I |
1G |
1I |
B15 |
RS232 RX |
I2C_SCL |
1F |
1L |
1F |
1L |
A15 |
I2C Clock for ADC |
I2C_SDA |
1B |
1J |
1B |
1J |
A8 |
I2C Data for ADC |
GPO_0/LED_0 |
4A0 |
4E0 |
4A0 |
4E0 |
B6 |
GP output, connected to LED |
GPO_1/LED_1 |
4A1 |
4E1 |
4A1 |
4E1 |
B7 |
GP output, connected to LED |
GPO_6/LED_2 |
4A2 |
4E2 |
4A2 |
4E2 |
A6 |
GP output, connected to LED |
GPO_7/LED_3 |
4A3 |
4E3 |
4A3 |
4E3 |
A7 |
GP output, connected to LED |
GPO_2 |
4B0 |
4F0 |
4B0 |
4F0 |
B9 |
GP output |
GPO_3 |
4B1 |
4F1 |
4B1 |
4F1 |
B11 |
GP output |
GPO_4 |
4B2 |
4F2 |
4B2 |
4F2 |
A9 |
GP output |
GPO_5 |
4B3 |
4F3 |
4B3 |
4F3 |
A11 |
GP output |
BUTTON_A |
4C0 |
8D0 |
4C0 |
8D0 |
B12 |
Input from Button A |
BUTTON_B |
4C1 |
8D1 |
4C1 |
8D1 |
B13 |
Input from Button B |
GPI_0 |
4D0 |
1O |
4D0 |
1O |
B17 |
GP Input |
GPI_1 |
4D1 |
1P |
4D0 |
1P |
B18 |
GP Input |
GPI_2 |
4D2 |
8D4 |
4D0 |
NC |
A18 |
GP Input |
GPI_3 |
4D3 |
8D5 |
4D0 |
NC |
A17 |
GP Input |
GPI_4 |
4C2 |
8D6 |
4C2 |
NC |
A12 |
GP Input |
GPI_5 |
4C3 |
8D7 |
4C3 |
NC |
A13 |
GP Input |
XA-SK-GPIO Slice Card Hardware Guide Read More »
This document covers the hardware design of the sliceKIT Modular Development System, consisting of the core board, sliceCARDs and xSYS adaptor.
The core board contains a fully pinned out 16-core xCORE multicore microcontroller. All GPIOs are connected to four expansion connectors (termed slots) which interface with expansion cards called sliceCARDs that plug into the slots. The core board also contains all circuitry necessary for operating and debugging the xCORE system. Multiple sliceKIT core boards can be interconnected to form a multi xCORE device system with dual 5-bit xCONNECT Links being present between the boards.
The diagram above shows an overview of the layout of the core board with sliceCARDs attached. Each of the four slots has a specific label – Star, Triange, Square, Circle printed on the core board silkscreen. Triangle and Circle sliceCARDs contain 24 xCORE I/Os, and the Star and Square sliceCARDs have 20 xCORE I/Os (usable as GPIO or two 5-wire xCONNECT links). The label denotes which sliceCARDs are compatible with which core board slots. The sliceCARDs are also marked with one or more of these labels to identify the slot type(s) they function correctly with.
The final type of connector is on the bottom left of the core board and is marked with a hollow square symbol with an X through it. This is for connecting multiple core boards together to form systems of 32 logical cores or more. It is termed the chain slot.
All slots are 36 pin PCI express style connectors in either socket or edge finger (plug) types.
Star and Triangle slots are pinned out from Tile 0 of the XS1-L16 xCORE device and the Circle and Square slots from Tile 1.
The L16 core board board contains the xCORE device plus support circuitry.
A single XS1-L16-128-QF124 device has all of its GPIO connected to the slots.
Additional sliceKIT core boards can be connected to the Chain slot on the first board via the Square Slot on the second board, to add extra processing capability and I/O through extra sliceCARDs. The first board is termed the Master and the remaining boards are Slaves. When there is only one board, it is the Master.
For debugging, an xSYS adaptor board is connected to the Chain connector of the Master board to allow connection of an xTAG-2 which provides a debug link from a USB host.
The core board is powered by a 12V external power supply.
Power input to the sliceKIT core board is via a standard barrel jack connector. A standard 12V external power supply should be used to power the board. Each core board requires its own 12V supply. This input supply is used to generate the main 5V board supply via a DC-DC converter.
The 5V board supply is then fed to all the slot connectors as well as powering the core board itself. 3V3 and 1V0 supplies are be generated by DC-DC converters from the 5V main supply.
The supplies are sequenced to ensure the power up sequence is 5V then 3V3 then 1V0. When the 1V0 supply is good, the system is released from reset.
The core board provides 3V3 and 5V at 0.25A each for a total of approximately 2W per slice.
Debug of the system is via the xSYS adapter board connected to the Chain connector.
The JTAG signals are connected as shown below.
Presence detect signals are present on both the Chain connector and Square slot connectors to allow detection of a connected board and subsequent automatic switching of the JTAG chain. In a system of multiple core boards, the Master is the source of the JTAG chain so the system can only be debugged from the master. Other boards will see no devices in the JTAG chain.
The use of xSCOPE is covered in the xCONNECT Links section. The xSCOPE xCONNECT Link can be either enabled or disabled via a switch on the xSYS adapter board.
Master core boards boot from SPI flash, while slave core boards boot from xCONNECT link XLB from the next connected core board.
To allow re-use of the SPI boot pins (ports 1A, 1B, 1C, 1D) as signal I/O pins for the Star slot, a latched bus switch is used which connects the xCORE SPI pins to either the SPI Flash or to the sliceCARD slots. The switch is controlled by X0D42 and X0D43 (P8D6 and P8D7 on Tile 0 – on the Triangle slot). Once the device has booted, X0D43 is used to enable or disable the SPI interface, X0D42 should then transition from low to high to latch the selection. The SPI selection state is maintained until the system is reset.
Once this sequence is completed and the selection has been latched, X0D42 and X0D43 return to performing their normal functions in the Triangle slot.
If the SPI is not disabled, then SliceCARDs in the Star slot may not function as expected. If there is no sliceCARD in the Star slot, then it does not matter whether the SPI has been disabled or not. Therefore, applications which require runtime access to the SPI flash should either leave the Star slot unpopulated or check to ensure that the sliceCARD which is in the slot will be unaffected by the operation of the flash device.
The xTAG-2 system can use the boot mode select signal to force all devices in the chain (master and slave core boards) to boot from JTAG (don’t boot) for debug purposes.
If not in this mode, the devices will boot from SPI or xCONNECT Link as appropriate.
The Chain connector contains two 5-bit xCONNECT Links, XLA and XLB, which can be used to chain sliceKIT core boards together. The links from Tile 0 are connected to the Chain connector and the Star slot. The links from Tile 1 are connected to the Square slot.
The only complication in this system is use of the xSCOPE 2-bit xCONNECT Link. This link overlaps a 4 bit port on the Star slot connector so it is not possible to use this for user I/O at the same time as xSCOPE.
To work around this, a switch is present on the xSYS adapter board to either enable or disable the xSCOPE xCONNECT Link.
When disabled, these pins are disconnected from the Chain connector and are free for use on the Star slot. When enabled they will work as an xCONNECT Link and hence appear on the relevant pins of the Star slot.
It is recommended that if a sliceCARD is used in the Star Slot the XSCOPE switch is off on the xSYS adaptor card to ensure correct operation of the sliceCARD in the Star slot.
The whole system is held in reset until all power supplies are stable, and reset is connected to all Slice Cards so any circuitry on them can be reset.
Reset also indicates to the sliceCARDs that their power input is stable. The reset from the xTAG-2 resets the whole system, if required for debugging.
The system clock has two sources: an on-board 25MHz oscillator or the CLK signal from the Chain connector. The system clock source is selected automatically according to the presence of signals on the Chain connector.
This means the system clock from a Master core board is fed automatically to all of the slave core boards so the whole system will operate synchronously.
The system clock is also fed to each of the sliceCARD slots.
Each xCORE I/O signal is also available on a 0.1” header, next to the slot that it is connected to.
These connections can be used to connect an oscilloscope or logic analyser, or for interconnection of signals for advanced development work.
The signals are identified on the silkscreen layer of the sliceKIT core board; the table below lists their relationship to the internal ports.
L16 Pin |
Slot |
PCIE |
Function |
||||
---|---|---|---|---|---|---|---|
X0D0 |
TRIANGLE |
B2 |
P1A0 |
||||
X0D1 |
sliceKIT hardware manual Read More » GPIO Simple Demo Quickstart Guidesw_gpio_examples simple demo : Quick Start GuideThis simple demonstration of xTimeComposer Studio functionality uses the XA-SK-GPIO Slice Card together with the xSOFTip I2C Master component to:
Hardware SetupThe XP-SKC-L2 Slicekit Core board has four slots with edge conectors: SQUARE, CIRCLE, TRIANGLE and STAR. To setup up the system:
Import and Build the Application
For help in using xTimeComposer, try the xTimeComposer tutorials, which you can find by selecting Help->Tutorials from the xTimeComposer menu. Note that the Developer Column in the xTimeComposer on the right hand side of your screen provides information on the xSOFTip components you are using. Select the I2C master (Single Bit Ports) component in the xSOFTip Browser, and you will see its description together with links to more documentation for this component. Once you have briefly explored this component, you can return to this quickstart guide by re-selecting 'Slicekit COM Port GPIO Demo' in the xSOFTip Browser and clicking once more on the Quickstart link for the GPIO Simple Demo Quickstart. Run the ApplicationNow that the application has been compiled, the next step is to run it on the Slicekit Core Board using the tools to load the application over JTAG (via the XTAG2 and Xtag Adaptor card) into the xCORE multicore microcontroller.
Next StepsLook at the Code
Try the Com Port Demo
GPIO Simple Demo Quickstart Guide Read More » Slicekit GPIO and Ethernet Combo Demo Quickstart Guidesw_gpio_examples GPIO and Ethernet demo : Quick Start GuideThis example demonstrates the use of two Slice Cards, XA-SK-GPIO and XA-SK-E100 together with the xSOFTip components for Ethernet, XTCP, I2C and WebServer to provide access to the GPIO slice features via a simple embedded webserver.
Hardware SetupThe XP-SKC-L2 Slicekit Core board has four slots with edge conectors: SQUARE, CIRCLE, TRIANGLE and STAR. To setup up the system refer to the figure and instructions below
Import and Build the Application
For help in using xTIMEcomposer, try the xTIMEcomposer tutorials, which you can find by selecting Help->Tutorials from the xTIMEcomposer menu. Running the Demo
Next StepsBuilding web pages for your applicationsThis application parses ethernet data to interpret web page commands. Refer to the Programming Guide section within the SliceKit GPIO Example Applications documentation linked from the front page documentation for this demo for more information on how to utilize the Embedded Webserver Function Library component in building your own custom web server applications. Look at the CodeThe application handler runs on one core. It uses I/O pins to read or write data to the LEDs, buttons and the I2C ADC to read the temperature. The web page handler executes in another core, receiving the TCP requests and processing them. It calls the functions described in the webpage (webpage includes embedded function calls into the application code), processing the requests and sending commands over the c_gpio channel to the gpio core (application handler).
Slicekit GPIO and Ethernet Combo Demo Quickstart Guide Read More » Slicekit GPIO and Ethernet Combo Demo
FeaturesWith this application running on XP-SKC-L2 using XA-SK-GPIO and XA-SK-E100 Slice Cards, you can issue commands using a web page from a host PC to:
DocumentationSlicekit GPIO and Ethernet Combo Demo Read More » |