80-000348 Critical Link LLC, 80-000348 Datasheet - Page 3

• Manufacturer Part Number: 80-000348
• Description: MCU, MPU & DSP Development Tools DEV KIT MITYDSP 1810/AM1810 PROFIBUS
• Manufacturer: Critical Link LLC
• Series: -r

Specifications of 80-000348

• Processor To Be Evaluated: AM1810
• Maximum Operating Temperature: + 85 C
• Operating Supply Voltage: 3.3 V
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Critical Link, LLC
www.criticallink.com
MityARM-1810 PROFIBUS Dev Kit
www.mitydsp.com
22 November 2010
UARTS and connects directly to the RS-485 transceiver on the PROFIBUS
DEVELOPMENT KIT base board and therefore eliminates the need of an external ASIC
or FPGA to support the PROFIBUS interface. Customers using the MityARM-1810 in
their industrial application can save cost and reduce design complexity as well as PCB
space. Furthermore, the industrial application benefits from the low-power architecture of
the Sitara ARM MPU and the MityARM-1810 platform from TI and Critical Link.
The AM1810 Sitara ARM MPU PROFIBUS Slave solution has been certified by
PROFIBUS International (PI).
The PROFIBUS real-time frame handler (Fieldbus Data Link or FDL) is encapsulated in
the Programmable Real-Time Unit Subsystem (PRUSS), which is part of the AM1810
Sitara ARM MPU on-chip peripherals. The PRUSS uses one Universal Asynchronous
Receiver/Transmitter (UART) and a timer to generate PROFIBUS-compliant frames. The
industrial application and the PROFIBUS DP-Protocol (Layer 7) are operated on the
ARM. The solution is completed with an RS-485 transceiver suitable for harsh
environments, such as TI’s ISO1176 which is found on the PROFIBUS
DEVELOPMENT KIT base board to the MityARM-1810.
The PROFIBUS subsystem uses the PRUs that implement real-time frame handling;
PROFIBUS message transmission, frame validation and communication with the ARM
processor. The PROFIBUS subsystem interfaces with one of the UARTs in the AM1810
Sitara ARM MPU, which is designated for PROFIBUS communication at up to 6Mbaud
data rate. The PRU uses interrupts to interact with the ARM where the PROFIBUS stack
(Layer 7, DP Protocol) and the industrial application is run. All process data handling like
cyclic, acyclic and service access point (SAP) between the PROFIBUS stack on ARM
and the PRU is through the internal memory.
Additional details about the AM1810 Sitara ARM MPU, available peripherals and their
features are provided in the data sheet at the TI website (www.ti.com/am1810).
RS-232 Interface Description
The on-board RS-232 level driver provides standard serial interface at data rates up to
115,200 baud. The serial interface is routed to the primary MityARM / MityDSP serial
bootloading port in order to allow remote code download and FLASH upgrades on an
attached MityARM / MityDSP from this connector.
USB Interface Description
The on-board USB interface utilizes dedicated HOST and OTG controllers inside OMAP
processor. Linux and drivers are available.
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