Skip to content

Commit

Permalink
platforms/xcu1525: fix ddram 1/2/3 pinout.
Browse files Browse the repository at this point in the history 
DDR4 now validated successfully with LiteDRAM on the 4 channels.
  • Loading branch information
@enjoy-digital
enjoy-digital committed Dec 11, 2020
1 parent 519f944 commit ec4ccc9
Showing 1 changed file with 35 additions and 33 deletions.
68 changes: 35 additions & 33 deletions litex_boards/platforms/xcu1525.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -138,27 +138,27 @@
Subsignal("clk_n", Pins("AU25"), IOStandard("DIFF_SSTL12_DCI")),
Subsignal("clk_p", Pins("AT25"), IOStandard("DIFF_SSTL12_DCI")),
Subsignal("cs_n", Pins("AV23"), IOStandard("SSTL12_DCI")),
Subsignal("dm", Pins("BE8 AY13 BA10 AN14 BE15 BB14 AW16 AM17"),
Subsignal("dm", Pins("BE8 BE15 BE22 BA10 AY13 BB14 AN14 AW16"),
IOStandard("POD12_DCI")),
Subsignal("dq", Pins(
" BD9 BD7 BC7 BD8 BD10 BE10 BE7 BF7",
"AU13 AV13 AW13 AW14 AU14 AY11 AV14 BA11",
"BA12 BB12 BA13 BA14 BC9 BB9 BA7 BA8",
"AN13 AR13 AM13 AP13 AM14 AR15 AL14 AT15",
"BE13 BD14 BF12 BD13 BD15 BD16 BF14 BF13",
"AY17 BA17 AY18 BA18 BA15 BB15 BC11 BD11",
"AV16 AV17 AU16 AU17 BB17 BB16 AT18 AT17",
"AM15 AL15 AN17 AN16 AR18 AP18 AL17 AL16"),
" BC7 BD7 BD8 BD9 BF7 BE7 BD10 BE10",
"BF12 BE13 BD14 BD13 BF14 BF13 BD16 BD15",
"BF25 BE25 BF24 BD25 BC23 BD23 BF23 BE23",
"BA14 BA13 BA12 BB12 BC9 BB9 BA7 BA8",
"AU13 AW14 AW13 AV13 AU14 BA11 AY11 AV14",
"BA18 BA17 AY18 AY17 BD11 BC11 BA15 BB15",
"AR13 AP13 AN13 AM13 AT15 AR15 AM14 AL14",
"AV16 AV17 AU17 AU16 BB17 BB16 AT17 AT18"),
IOStandard("POD12_DCI"),
Misc("OUTPUT_IMPEDANCE=RDRV_40_40"),
Misc("PRE_EMPHASIS=RDRV_240"),
Misc("EQUALIZATION=EQ_LEVEL2")),
Subsignal("dqs_n", Pins("BF9 AY15 BB10 AT13 BE11 BC12 AW18 AR16"),
Subsignal("dqs_n", Pins("BF9 BE11 BD24 BB10 AY15 BC12 AT13 AW18"),
IOStandard("DIFF_POD12"),
Misc("OUTPUT_IMPEDANCE=RDRV_40_40"),
Misc("PRE_EMPHASIS=RDRV_240"),
Misc("EQUALIZATION=EQ_LEVEL2")),
Subsignal("dqs_p", Pins("BF10 AW15 BB11 AT14 BE12 BC13 AV18 AP16"),
Subsignal("dqs_p", Pins("BF10 BE12 BC24 BB11 AW15 BC13 AT14 AV18"),
IOStandard("DIFF_POD12"),
Misc("OUTPUT_IMPEDANCE=RDRV_40_40"),
Misc("PRE_EMPHASIS=RDRV_240"),
Expand All @@ -167,6 +167,7 @@
Subsignal("reset_n", Pins("AR17"), IOStandard("LVCMOS12")),
Misc("SLEW=FAST")
),

("ddram", 2,
Subsignal("a", Pins(
"L29 A33 C33 J29 H31 G31 C32 B32",
Expand All @@ -182,27 +183,27 @@
Subsignal("clk_n", Pins("B34"), IOStandard("DIFF_SSTL12_DCI")),
Subsignal("clk_p", Pins("C34"), IOStandard("DIFF_SSTL12_DCI")),
Subsignal("cs_n", Pins("B35"), IOStandard("SSTL12_DCI")),
Subsignal("dm", Pins("R28 M27 H26 C29 G37 T30 M34 H33"),
Subsignal("dm", Pins("T30 M27 R28 H26 C37 H33 G37 M34"),
IOStandard("POD12_DCI")),
Subsignal("dq", Pins(
"R25 P25 M25 L25 P26 R26 N27 N28",
"J28 H29 H28 G29 K25 L27 K26 K27",
"F27 E27 E28 D28 G27 G26 F28 F29",
"D26 C26 B27 B26 A29 A30 C27 C28",
"F35 E38 D38 E35 E36 E37 F38 G38",
"P30 R30 P29 N29 L32 M32 P31 N32",
"J35 K35 L33 K33 J34 J33 N34 P34",
"H36 G36 H37 J36 K37 K38 G35 G34"),
"P29 P30 R30 N29 N32 M32 P31 L32",
"H29 G29 J28 H28 K27 L27 K26 K25",
"P25 R25 L25 M25 P26 R26 N27 N28",
"F27 D28 E27 E28 G26 F29 G27 F28",
"A38 A37 B37 C36 B40 C39 A40 D39",
"G36 H36 H37 J36 G34 G35 K37 K38",
"E38 D38 E35 F35 E36 E37 F38 G38",
"K35 J35 K33 L33 J33 J34 N34 P34"),
IOStandard("POD12_DCI"),
Misc("OUTPUT_IMPEDANCE=RDRV_40_40"),
Misc("PRE_EMPHASIS=RDRV_240"),
Misc("EQUALIZATION=EQ_LEVEL2")),
Subsignal("dqs_n", Pins("M26 J26 D30 A28 E40 M31 L36 H38"),
Subsignal("dqs_n", Pins("M31 J26 M26 D30 A39 H38 E40 L36"),
IOStandard("DIFF_POD12"),
Misc("OUTPUT_IMPEDANCE=RDRV_40_40"),
Misc("PRE_EMPHASIS=RDRV_240"),
Misc("EQUALIZATION=EQ_LEVEL2")),
Subsignal("dqs_p", Pins("N26 J25 D29 A27 E39 N31 L35 J38"),
Subsignal("dqs_p", Pins("N31 J25 N26 D29 B39 J38 E39 L35"),
IOStandard("DIFF_POD12"),
Misc("OUTPUT_IMPEDANCE=RDRV_40_40"),
Misc("PRE_EMPHASIS=RDRV_240"),
Expand All @@ -211,6 +212,7 @@
Subsignal("reset_n", Pins("D36"), IOStandard("LVCMOS12")),
Misc("SLEW=FAST")
),

("ddram", 3,
Subsignal("a", Pins(
"K15 B15 F14 A15 C14 A14 B14 E13",
Expand All @@ -226,27 +228,27 @@
Subsignal("clk_n", Pins("L13"), IOStandard("DIFF_SSTL12_DCI")),
Subsignal("clk_p", Pins("L14"), IOStandard("DIFF_SSTL12_DCI")),
Subsignal("cs_n", Pins("B16"), IOStandard("SSTL12_DCI")),
Subsignal("dm", Pins("N22 M22 K18 N17 D24 B19 H19 H23"),
Subsignal("dm", Pins("T13 N17 D24 B19 H19 H23 M22 N22"),
IOStandard("POD12_DCI")),
Subsignal("dq", Pins(
"P24 N24 T24 R23 N23 P21 P23 R21",
"J24 J23 H24 G24 L24 L23 K22 K21",
"G20 H17 F19 G17 J20 L19 L18 J19",
"M19 M20 R18 R17 R20 T20 N18 N19",
"A23 A22 B24 B25 B22 C22 C24 C23",
"C19 C18 C21 B21 A18 A17 A20 B20",
"E17 F20 E18 E20 D19 D20 H18 J18",
"F22 E22 G22 G21 F24 E25 F25 G25"),
"M16 N16 N14 N13 R15 T15 P13 P14",
"R17 R18 M20 M19 N18 N19 R20 T20",
"B24 A23 A22 B25 C24 C23 C22 B22",
"C18 C19 C21 B21 A17 A18 B20 A20",
"E18 E17 E20 F20 D19 H18 D20 J18",
"G21 E22 G22 F22 G25 F24 E25 F25",
"J24 G24 J23 H24 L23 K21 L24 K22",
"P24 N24 R23 T24 N23 P21 P23 R21"),
IOStandard("POD12_DCI"),
Misc("OUTPUT_IMPEDANCE=RDRV_40_40"),
Misc("PRE_EMPHASIS=RDRV_240"),
Misc("EQUALIZATION=EQ_LEVEL2")),
Subsignal("dqs_n", Pins("R22 H21 K20 P18 A24 B17 F17 E23"),
Subsignal("dqs_n", Pins("P15 P18 A24 B17 F17 E23 H21 R22"),
IOStandard("DIFF_POD12"),
Misc("OUTPUT_IMPEDANCE=RDRV_40_40"),
Misc("PRE_EMPHASIS=RDRV_240"),
Misc("EQUALIZATION=EQ_LEVEL2")),
Subsignal("dqs_p", Pins("T22 J21 L20 P19 A25 C17 F18 F23"),
Subsignal("dqs_p", Pins("R16 P19 A25 C17 F18 F23 J21 T22"),
IOStandard("DIFF_POD12"),
Misc("OUTPUT_IMPEDANCE=RDRV_40_40"),
Misc("PRE_EMPHASIS=RDRV_240"),
Expand Down

0 comments on commit ec4ccc9

Please sign in to comment.