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39 lines
1.5 KiB
Python
39 lines
1.5 KiB
Python
##
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## This file is part of the libsigrokdecode project.
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##
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## Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 2 of the License, or
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## (at your option) any later version.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program; if not, see <http://www.gnu.org/licenses/>.
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##
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'''
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This PD decodes the XFP I²C management interface structures/protocol.
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XFP modules include an I²C interface, used to monitor and control various
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aspects of the module. The specification defines an I²C slave at address
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0x50 (0xa0) which returns 128 bytes of a standard structure ("lower memory"),
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and, after setting a table number in lower memory, a set of 256 "higher
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memory" tables, which can be mapped to different subdevices on the XFP.
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Only one table is defined in the specification: table 0x01, the default on
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module startup. Other table are either reserved for future expansion, or
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available for vendor-specific extensions. This decoder supports both lower
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memory and table 0x01.
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Details:
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ftp://ftp.seagate.com/sff/INF-8077.PDF (XFP specification)
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'''
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from .pd import Decoder
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