Artesyn Embedded Technology ATCA-7540, Инструкция по установке и эксплуатации, Страница: 93 / 324

Functional Description
ATCA-7540 Installation and Use (6806871A01A) 93
4.13 Control Logic
The blade uses a Lattice FPGA to provide control logic for specific functions, which includes:

Payload power supervision and sequencing

Payload resets
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Multiple hardware interfaces between payload and IPMC

Support for sensors as required
Any control circuitry based on programmable logic, whether intended for payload supervision
or as part of the payload, is remotely upgradeable. Crisis recovery circuitry is provided to
prevent blade lock-ups as the result of a failed remote upgrade of the board control logic.
4.14 Front Blade Faceplate
The blade's faceplate (reference Figure 3-1. on page 67 ) provides the following interfaces and
control elements:

One SFP+ socket

One USB 3.0 port
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One RJ-45 connector for RS-232 serial console

One 1 GbE RJ-45 connector

Recessed reset button

Out of Service, In Service, Attention, User Controlled and Hot Swap LEDs
The blade design provides the possibility to cover unused faceplate elements like LEDs or push
button behind a custom overlay foil.
4.15 Faceplate Serial Interfaces
The ATCA-7540 has two serial interfaces. They are fully compliant to industry standard 16550
asynchronous communication controllers. The two serial line interfaces #1 and #2 are
integrated in the FPGA, which distributes them to either faceplate, RTM, or IPMC for SOL. The
serial line interfaces support baud rates up to 115200 kbps through a programmable baud rate
generator.