Critical Link, LLC
www.criticallink.com
MitySOM
MitySOM-1810 Processor Card
5-MAR-2014
FEATURES
TI AM1810 ARM9 Application Processor
-
375 MHz ARM926EJ-S MPU
16 KB L1 Program Cache
16 KB L1 Data Cache
8 KB Internal RAM
64 KB boot ROM
JTAG Emulation/Debug
Up To 256 MB mDDR2 CPU RAM
Up To 512 MB Parallel NAND FLASH
8 MB SPI based NOR FLASH
Integrated Power Management
Standard SO-DIMM-200 Interface
-
10/100 EMAC MII / RMII / MDIO
-
2 UARTS
-
2 McBSPs, 2 SPI, 2HPI
-
2 USB Ports
-
Video, LCD Output
-
Camera/Video Input
-
MMC/SD
-
SATA
-
ePWM, eCAP
-
EMIFA
-
Single 3.3V Power Supply
PROFIBUS Interface
-
Certified by PI International
-
Real-Time Linux Drivers
-
Up to 6Mbaud operation
(actual size)
APPLICATIONS
Process Automation
Factory Automation
Industrial Automation
Industrial Instrumentation
Embedded Control Processing
Test and Measurement
BENEFITS
Rapid Development / Deployment
Multiple Connectivity and Interface Options
Rich User Interfaces
High System Integration
High Level OS Support
-
Real-Time Linux Kernel 2.6
-
QNX 6.4
-
Windows Embedded CE Ready
-
ThreadX Real Time OS
DESCRIPTION
The MitySOM-1810 is a highly configurable, very small form-factor processor card that
features a Texas Instruments AM1810 375MHz ARM Applications Processor for
PROFIBUS, FLASH (NAND, and NOR) and mDDR2 RAM memory subsystems. The
MitySOM-1810 provides a complete and flexible CPU infrastructure necessary for the
most demanding embedded applications development.
The AM1810 includes an ARM926EJ-S micro-processor unit (MPU) capable of running
the rich software applications programming interfaces (APIs) expected by modern system
designers. The ARM architecture supports several operating systems, including Linux,
QNX and Windows XP embedded.
Linux drivers are available for all interfaces,
including the PROFIBUS interface.
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Copyright © 2013, Critical Link LLC
Specifications Subject to Change
Critical Link, LLC
www.criticallink.com
MitySOM
MitySOM-1810 Processor Card
5-MAR-2014
1.2V
1.8V
2.5V
3.3V
Up To 256MB
mDDR Memory
16-bit wide
8MB NOR Flash
(SPI interface)
For uBoot
bootloader
System
Clocks
JTAG
Header
JTAG/Emulator
Power
Management
Texas Instruments
AM1810
375-MHz ARM926EJ-S ™ RISC MPU
(Many pins are multiplexed between peripherals)
EMAC MII/MDIO
Resets & RTC
EMAC RMII
UART 0,1,2
McBSP 0,1
MMCSD 0
MMCSD 1
eHRPWM
VPIF I/O
USB 0,1
McASP
SPI 0,1
I2C 0,1
Timers
eCAP
SATA
UHPI
LCD
uPP
Boot Config
EMIFA (16-bit)
Boot
Config
SO-DIMM-200 (DDR2 Connector)
Figure 1 MitySOM-1810 Block Diagram
Figure 1 provides a top level block diagram of the MitySOM-1810 processor card. As
shown in the figure, the primary interface to the MitySOM-1810 is through a standard
SO-DIMM-200 card edge interface. The interface provides power, synchronous serial
connectivity, and a rich set of interfaces available for application defined interfacing.
Details of the SO-DIMM-200 connector interface are included in the SO-DIMM-200
Interface Description, below.
PROFIBUS Interface
Texas Instruments Inc. (TI) has integrated PROFIBUS functionality into its AM1810
Sitara ARM microprocessor (MPU). The solution utilizes one of the onboard UARTS
and connects directly to the RS-485 transceiver and therefore eliminates the need of an
external PROFIBUS ASIC or FPGA. Customers using the MitySOM-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 MitySOM-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
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Copyright © 2013, Critical Link LLC
Specifications Subject to Change
3.3 V
GND
Up To 512MB
NAND Flash
8-bit wide
For root FFS
Critical Link, LLC
www.criticallink.com
MitySOM
MitySOM-1810 Processor Card
5-MAR-2014
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 can be completed with an RS-485 transceiver suitable for harsh
environments, such as TI’s ISO1176T or ISO1176 placed on the base board to the
MitySOM-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).
AM1810 mDDR2 Memory Interface
The AM1810 includes a dedicated DDR2 SDRAM memory interface. The MitySOM-
1810 includes up to 256 MB of mDDR2 RAM integrated with the AM1810 processor.
The bus interface is capable of burst transfer rates of 532 MB / second. Note that the
OSCIN frequency to the AM1810 processor on the module is 24MHz.
AM1810 SPI NOR FLASH Interface
The MitySOM-1810 includes 8 MB of SPI NOR FLASH. This FLASH memory is
intended to store a factory provided bootloader, and typically a compressed image of a
linux kernel for the ARM core processor.
EMIFA / NAND FLASH Interface
The Asynchronous External Memory Interface (EMIFA) interface available on the
AM1810 is available on the SO-DIMM-200 connector. The EMIFA interface includes 3
chip select spaces. The EMIF interface supports multiple data width transfers and bus
wait state configurations based on chip select space. 8, and 16 bit data word sizes may be
used.
Up to 512 MB of on-board NAND FLASH memory is connected to the AM1810 using
the EMIFA bus. The FLASH memory is 8 bits wide and is connected to the third chip
select line of the EMIFA (CE1). The FLASH memory is typically used to store the
following types of data:
-
ARM Linux / Windows Embedded CE / QNX embedded root file-system
-
runtime ARM software
-
runtime application data (non-volatile storage)
3
Copyright © 2013, Critical Link LLC
Specifications Subject to Change
Critical Link, LLC
www.criticallink.com
MitySOM
MitySOM-1810 Processor Card
5-MAR-2014
AM1810 Camera and Video Interfaces
The AM1810 includes an optional video port I/O interface commonly used to drive LCD
screens as well as a camera input interface. These interfaces have been routed directly to
the SO-DIMM-200 connector.
Debug Interface
The JTAG signals for the AM1810 processor have been brought out to a Hirose header
that is intended for use with an available Critical Link breakout adapter. This header can
be removed for production units; please contact your Critical Link representative for
details.
This adapter is not included with individual modules but is included with each Critical
Link Development Kit that is ordered. If an adapter, Critical Link (CL) part number
80-000286, is needed please contact your Critical Link representative.
Software and Application Development Support
Users of the MitySOM-1810 are encouraged to develop applications using the MitySOM-
1810 software development kit provided by Critical Link LLC. The development kit
includes an implementation of an OpenEmbedded board support package providing an
Angstrom based Linux distribution and compatible gcc compiler tool-chain with
debugger.
Growth Options
The MitySOM-1810 has been designed to support several upgrade options. These options
include various speed grades, memory configurations, and operating temperature
specifications including commercial and industrial temperature ranges. The available
options are listed in the section below containing ordering information. For additional
ordering information and details regarding these options, or to inquire about a particular
configuration not listed below, please contact a Critical Link sales representative.
4
Copyright © 2013, Critical Link LLC
Specifications Subject to Change
Critical Link, LLC
www.criticallink.com
MitySOM
MitySOM-1810 Processor Card
5-MAR-2014
ABSOLUTE MAXIMUM RATINGS
If Military/Aerospace specified cards are
required, please contact the Critical Link Sales
Office or unit Distributors for availability and
specifications.
Maximum Supply Voltage, Vcc
3.5 V
OPERATING CONDITIONS
Ambient Temperature
Range Commercial
Ambient Temperature
Range Industrial
Humidity
MIL-STD-810F
0
o
C to 70
o
C
-40
o
C to 85
o
C
0 to 95%
Non-condensing
Contact Critical
Link for Details
Storage Temperature Range
Shock, Z-Axis
Shock, X/Y-Axis
-65 to 80C
±10 g
±10 g
SO-DIMM-200 Interface Description
The primary interface connector for the MitySOM-1810 is the SO-DIMM card edge
interface which contains 4 classes of signals:
Power (PWR)
Dedicated signals mapped to the AM-1810 device (D)
Dedicated signals when NAND memory is populated on the module (D*)
Multi-function signals mapped to the AM1810 device (M)
Table 1 contains a summary of the MitySOM-1810 pin mapping.
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
Ball
-
-
-
-
-
K14
J1
J2
L1
L2
P16
P18
P19
N19
M18
M19
K18
-
-
-
Type
PWR
PWR
PWR
PWR
PWR
D
D
D
D
D
D
D
D
D
D
D
D
D
PWR
PWR
I/O
-
-
-
-
-
I
O
O
I
I
I
I/O
I/O
O
I/O
I/O
O
-
-
-
Table 1 SO-DIMM Pin-Out
Signal
Pin Ball
+3.3 V in
2
-
+3.3 V in
4
-
+3.3 V in
6
-
GND
8
-
GND
10
-
RESET_IN#
12
-
SATA_TX_P
14
A4
SATA_TX_N
16
A3
SATA_RX_P
18
A2
SATA_RX_N
20
A1
USB0_ID
22
B4
USB1_D_N
24
B1
USB1_D_P
26
B2
USB0_VBUS
28
B3
USB0_D_N
30
C2
USB0_D_P
32
C3
USB0_DRVVBUS
34
C4
3V RTC Battery
36
C5
+3.3 V in
38
-
+3.3 V in
40
-
Type
PWR
PWR
PWR
PWR
PWR
D
M
M
M
M
M
M
M
M
M
M
M
M
PWR
PWR
I/O
-
-
-
-
-
I
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
-
-
Signal
+3.3 V in
+3.3 V in
+3.3 V in
GND
GND
EXT_BOOT#
GP0_7
GP0_10
GP0_11
GP0_15
GP0_6
GP0_14
GP0_12
GP0_5
GP0_13
GP0_1
GP0_4
GP0_3
+3.3 V in
+3.3 V in
5
Copyright © 2013, Critical Link LLC
Specifications Subject to Change
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