| # |
Detail |
Description |
| J1 |
 |
Connection to a powersupply unit (PSU). A 7V-10V transformer, or a wall adapter could be used. At least 500 mA is recommended, especially if a backlit display is connected. AC or DC doesn't matter, since the rectifier behind J1 converts to DC anyhow. Also the polarity does not have to be taken into account. |
| J2 |
 |
When used as +5V output: to supply modules which are not connected to a Jxx port which already provides a 5V output. Note that the 7805 gets very hot when it delivers currents above 500 mA. Maximum current drain is 1A!
When used as +5V input: for supplying the core from an external stabilized Power Supply Unit (PSU). The voltage regulator (IC3) doesn't need to be connected, also the rest of the voltage stabilization circuit between J1 and J2 (X1, C8, C9) can be left out. If the core module (and all connected modules to this branch) drains more than 100 mA, it's recommended to mount C8 directly to J2 (a small cable between the outer soldering pads of the left-out 7805 will do this).
|
| J3 |
 |
Standard JTAG 20 pin interface, see this page for details. |
| J4 |
 |
IIC port. Interface to BankSticks or to MBHP_IIC_* modules like MBHP_IIC_MIDI. |
J5A
J5B
J5C
|
 |
Analog sources (like pots) can be connected to this port (12 pots maximum). If multiplexed via AIN module, up to 96 pots can be scanned. There are also some application which use this pin as digital in- or output (mostly described in README.txt file).
|
J8/J9 |
 |
J8 is the interface to the DOUT module chain, whereas J9 is the interface to the DIN module chain.
|
J11 |
 |
This port provides two MIDI IOs at TTL level, interface to the LED/Thru/COM module. Can also be used to cascade multiple core modules in a MIDI chain (see MIDIbox Link). Note: It's possible to distribute the Tx (MIDI Out) signal to multiple cores, but it isn't allowed to connect more than one Tx output to a Rx input. Instead, a MIDImerger is necessary to combine multiple MIDI IN sources.
|
J12/J20 |
 |
MIDI OUT ports 1 and 2. See the schematic to connect a MIDI socket to this port.
|
J13/J21 |
 |
MIDI IN ports 1 and 2. See the schematic to connect a MIDI socket to this port.
|
J15A
J15B |
 |
Interface to one or two LCD module(s).
Please note that the pinout is different compared to the MBHP_CORE module!
|
J16 |
 |
SPI Interface to SD Card and SPI based Ethernet Interface.
Such modules can be easily connected with a single 10-wire ribbon cable and 3 IDC connectors as shown in this picture.
|
J17 |
 |
This jumper enables power supply via USB. Before closing the jumper, ensure that any other supply sources (e.g. at J1 or J2) are removed to avoid shorts or backcurrents to your PC!
|
J18 |
 |
CAN interface at TTL level as used by MBNet.
Please note, that STM32 doesn't allow the use of CAN and USB at the same time, since these peripherals share the same memory.
|
J19 |
 |
Interface to application specific module extensions like the SID module and/or AOUT module. Prepared for serial interfaces (although not driven by an integrated SPI), two chip select lines are available, additional select lines can be taken from free pins.
|
J22 |
 |
The core module power can be supplied via USB.
In addition, this port gives you a "MIDI USB" and/or "Virtual COM" interface. Also protocols like "Mass Storage Device" to access a SD Card directly from a computer are possible, but unfortunately Windows XP and Vista don't allow to use the appr. drivers in parallel, Windows could even crash when the USB cable is connected, therefore only one protocol is activated by default.
However, parallel usage of multiple protocols works fine under Mac OS and Linux when explicitely enabled in the MIOS32 configuration.
Applications can be updated via USB port, it's the fastest option.
|
J23 |
 |
Boot mode jumpers. See schematic for the 4 available options.
The application is started when these jumpers are NOT connected!
|
J24 |
 |
5V/3.3V supply options for serial ports.
|
J25 |
 |
5V/3.3V supply options for serial ports.
|
J26 |
 |
5V/3.3V supply options for serial ports.
|
J27 |
 |
Boot mode jumpers. See schematic for the 4 available options.
The application is started when these jumpers are NOT connected!
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