22 lines
975 B
Python
22 lines
975 B
Python
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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init_sequence = [
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("Bring CKE high", 0, 0, dfii_control_cke|dfii_control_odt|dfii_control_reset_n, 20000),
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("Precharge All", 1024, 0, dfii_command_ras|dfii_command_we|dfii_command_cs, 0),
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("Load Mode Register / Reset DLL, CL=2, BL=1", 288, 0, dfii_command_ras|dfii_command_cas|dfii_command_we|dfii_command_cs, 200),
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("Precharge All", 1024, 0, dfii_command_ras|dfii_command_we|dfii_command_cs, 0),
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("Auto Refresh", 0, 0, dfii_command_ras|dfii_command_cas|dfii_command_cs, 4),
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("Auto Refresh", 0, 0, dfii_command_ras|dfii_command_cas|dfii_command_cs, 4),
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("Load Mode Register / CL=2, BL=1", 32, 0, dfii_command_ras|dfii_command_cas|dfii_command_we|dfii_command_cs, 200),
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]
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