mirror of https://github.com/openXC7/prjxray.git
44 lines
1.3 KiB
Python
44 lines
1.3 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2017-2020 The Project X-Ray Authors.
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#
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# Use of this source code is governed by a ISC-style
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# license that can be found in the LICENSE file or at
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# https://opensource.org/licenses/ISC
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#
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# SPDX-License-Identifier: ISC
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dfii_control_sel = 0x01
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dfii_control_cke = 0x02
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dfii_control_odt = 0x04
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dfii_control_reset_n = 0x08
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dfii_command_cs = 0x01
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dfii_command_we = 0x02
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dfii_command_cas = 0x04
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dfii_command_ras = 0x08
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dfii_command_wrdata = 0x10
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dfii_command_rddata = 0x20
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ddrx_mr1 = 0x6
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init_sequence = [
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("Release reset", 0, 0, dfii_control_odt | dfii_control_reset_n, 50000),
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(
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"Bring CKE high", 0, 0,
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dfii_control_cke | dfii_control_odt | dfii_control_reset_n, 10000),
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(
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"Load Mode Register 2, CWL=5", 512, 2, dfii_command_ras
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| dfii_command_cas | dfii_command_we | dfii_command_cs, 0),
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(
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"Load Mode Register 3", 0, 3, dfii_command_ras | dfii_command_cas
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| dfii_command_we | dfii_command_cs, 0),
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(
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"Load Mode Register 1", 6, 1, dfii_command_ras | dfii_command_cas
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| dfii_command_we | dfii_command_cs, 0),
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(
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"Load Mode Register 0, CL=6, BL=8", 2336, 0, dfii_command_ras
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| dfii_command_cas | dfii_command_we | dfii_command_cs, 200),
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("ZQ Calibration", 1024, 0, dfii_command_we | dfii_command_cs, 200),
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]
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