Phytec phyCORE-i.MX35, Руководство по оборудованию

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Pin Description
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PHYTEC Messtechnik GmbH 2010 L-734e_1
7
2 Pin Description
Please note that all module connections are not to exceed their expressed maximum voltage or
current. Maximum signal input values are indicated in the corresponding controller manuals/data
sheets. As damage from improper connections varies according to use and application, it is the user's
responsibility to take appropriate safety measures to ensure that the module connections are
protected from overloading through connected peripherals.
As
Figure 4 indicates, all controller signals extend to surface mount technology (SMT) connectors
(0.635 mm) lining two sides of the module (referred to as phyCORE-connector). This allows the
phyCORE-i.MX35 to be plugged into any target application like a "big chip".
A new numbering scheme for the pins on the phyCORE-connector has been introduced with the
phyCORE specifications. This enables quick and easy identification of desired pins and minimizes
errors when matching pins on the phyCORE-module with the phyCORE-connector on the appropriate
PHYTEC Development Board or in user target circuitry.
The numbering scheme for the phyCORE-connector is based on a two dimensional matrix in which
column positions are identified by a letter and row position by a number. Pin 1A, for example, is
always located in the upper left hand corner of the matrix. The pin numbering values increase moving
down on the board. Lettering of the pin connector rows progresses alphabetically from left to right
(
refer to Figure 4 ).
The numbered matrix can be aligned with the phyCORE-i.MX35 (viewed from above;
phyCORE-connector pointing down) or with the socket of the corresponding phyCORE Development
Board/user target circuitry. The upper left-hand corner of the numbered matrix (pin 1A) is thus
covered with the corner of the phyCORE-i.MX35 marked with a triangle. The numbering scheme is
always in relation to the PCB as viewed from above, even if all connector contacts extend to the
bottom of the module.
The numbering scheme is thus consistent for both the module’s phyCORE-connector as well as
mating connectors on the phyCORE Development Board or target hardware, thereby considerably
reducing the risk of pin identification errors.
Since the pins are exactly defined according to the numbered matrix previously described, the
phyCORE-connector is usually assigned a single designator for its position (X1 for example). In this
manner the phyCORE-connector comprises a single, logical unit regardless of the fact that it could
consist of more than one physical socketed connector.
The location of row 1 on the board is marked by a triangle on the PCB to allow easy identification.
The following figure (
Figure 4 ) illustrates the numbered matrix system. It shows a phyCORE-i.MX35
with SMT phyCORE-connectors on its underside (defined as dotted lines) mounted on a Development
Board. In order to facilitate understanding of the pin assignment scheme, the diagram presents a
cross-view of the phyCORE-module showing these phyCORE-connectors mounted on the underside
of the module’s PCB.