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# PCEngines 2Gb 1333
# SPD contents for APU 2GB DDR3 NO ECC (1333MHz PC1333) soldered down
# 0 Number of SPD Bytes used / Total SPD Size / CRC Coverage
# bits[3:0]: 1 = 128 SPD Bytes Used
# bits[6:4]: 1 = 256 SPD Bytes Total
# bit7 : 0 = CRC covers bytes 0 ~ 128
01
# 1 SPD Revision
# 0x13 = Revision 1.3
13
# 2 Key Byte / DRAM Device Type
# bits[7:0]: 0x0b = DDR3 SDRAM
0B
# 3 Key Byte / Module Type
# bits[3:0]: 3 = SO-DIMM
# bits[3:0]: 8 = 72b-SO-DIMM
# bits[7:4]: reserved
03
# 4 SDRAM CHIP Density and Banks
# bits[3:0]: 3 = 2 Gigabits Total SDRAM capacity per chip
# bits[3:0]: 4 = 4 Gigabits Total SDRAM capacity per chip
# bits[6:4]: 0 = 3 (8 banks)
# bit7 : reserved
03
# 5 SDRAM Addressing
# bits[2:0]: 1 = 10 Column Address Bits
# bits[5:3]: 4 = 16 Row Address Bits
# bits[5:3]: 3 = 15 Row Address Bits
# bits[5:3]: 2 = 14 Row Address Bits
# bits[7:6]: reserved
19
# 6 Module Nominal Voltage, VDD
# bit0 : 0 = 1.5 V operable
# bit1 : 0 = NOT 1.35 V operable
# bit2 : 0 = NOT 1.25 V operable
# bits[7:3]: reserved
00
# 7 Module Organization
# bits[2:0]: 1 = 8 bits
# bits[2:0]: 2 = 16 bits
# bits[5:3]: 0 = 1 Rank
# bits[7:6]: reserved
01
# 8 Module Memory Bus Width
# bits[2:0]: 3 = Primary bus width is 64 bits
# bits[4:3]: 0 = 0 bits (no bus width extension)
# bits[4:3]: 1 = 8 bits (for ECC)
# bits[7:5]: reserved
03
# 9 Fine Timebase (FTB) Dividend / Divisor
# bits[3:0]: 0x02 divisor
# bits[7:4]: 0x05 dividend
# 5 / 2 = 2.5ps
52
# 10 Medium Timebase (MTB) Dividend
# 11 Medium Timebase (MTB) Divisor
# 1 / 8 = .125 ns
01 08
# 12 SDRAM Minimum Cycle Time (tCKmin)
# 0x0a = tCKmin of 1.25 ns = DDR3-1600 (800 MHz clock)
# 0x0c = tCKmin of 1.5 ns = DDR3-1333 (667 MHz clock)
# 0x0c = tCKmin of 1.5 ns = in multiples of MTB
0C
# 13 Reserved
00
# 14 CAS Latencies Supported, Least Significant Byte
# 15 CAS Latencies Supported, Most Significant Byte
# Cas Latencies of 11 - 5 are supported
7E 00
# 16 Minimum CAS Latency Time (tAAmin)
# 0x6C = 13.5ns - DDR3-1333
# 0x69 = 13.125 ns - DDR3-1333
69
# 17 Minimum Write Recovery Time (tWRmin)
# 0x78 = tWR of 15ns - All DDR3 speed grades
78
# 18 Minimum RAS# to CAS# Delay Time (tRCDmin)
# 0x6E = 13.5ns - DDR3-1333
# 0x69 = 13.125 ns - DDR3-1333
69
# 19 Minimum Row Active to Row Active Delay Time (tRRDmin)
# 0x30 = 6.0ns
# 0x38 = 7.0ns
# 0x3C = 7.5ns
30
# 20 Minimum Row Precharge Delay Time (tRPmin)
# 0x6C = 13.5ns -
# 0x69 = 13.125 ns - DDR3-1333
69
# 21 Upper Nibbles for tRAS and tRC
# bits[3:0]: tRAS most significant nibble = 1 (see byte 22)
# bits[7:4]: tRC most significant nibble = 1 (see byte 23)
11
# 22 Minimum Active to Precharge Delay Time (tRASmin), LSB
# 0x120 = 36ns - DDR3-1333 (see byte 21)
# 0x120 = 36ns - DDR3
20
# 23 Minimum Active to Active/Refresh Delay Time (tRCmin), LSB
# 0x289 = 49.125ns - DDR3-1333
89
# 24 Minimum Refresh Recovery Delay Time (tRFCmin), LSB
# 25 Minimum Refresh Recovery Delay Time (tRFCmin), MSB
# 0x500 = 160ns - for 2 Gigabit chips
# 0x820 = 260ns - for 4 Gigabit chips
00 05
# 26 Minimum Internal Write to Read Command Delay Time (tWTRmin)
# 0x3c = 7.5 ns - All DDR3 SDRAM speed bins
3C
# 27 Minimum Internal Read to Precharge Command Delay Time (tRTPmin)
# 0x3c = 7.5ns - All DDR3 SDRAM speed bins
3C
# 28 Upper Nibble for tFAWmin
# 29 Minimum Four Activate Window Delay Time (tFAWmin)
# 0x00F0 = 30ns - DDR3-1333, 1 KB page size
00 F0
# 30 SDRAM Optional Feature
# bit0 : 1= RZQ/6 supported
# bit1 : 1 = RZQ/7 supported
# bits[6:2]: reserved
# bit7 : 1 = DLL Off mode supported
83
# 31 SDRAM Thermal and Refresh Options
# bit0 : 1 = Temp up to 95c supported
# bit1 : 0 = 85-95c uses 2x refresh rate
# bit2 : 1 = Auto Self Refresh supported
# bit3 : 0 = no on die thermal sensor
# bits[6:4]: reserved
# bit7 : 0 = partial self refresh supported
01
# 32 Module Thermal Sensor
# 0 = Thermal sensor not incorporated onto this assembly
00
# 33 SDRAM Device Type
# bits[1:0]: 0 = Signal Loading not specified
# bits[3:2]: reserved
# bits[6:4]: 0 = Die count not specified
# bit7 : 0 = Standard Monolithic DRAM Device
00
# 34 Fine Offset for SDRAM Minimum Cycle Time (tCKmin)
00
# 35 Fine Offset for Minimum CAS Latency Time (tAAmin)
00
# 36 Fine Offset for Minimum RAS# to CAS# Delay Time (tRCDmin)
00
# 37 Fine Offset for Minimum Row Precharge Delay Time (tRPmin)
00
# 38 Fine Offset for Minimum Active to Active/Refresh Delay (tRCmin)
00
# 39 40 (reserved)
00 00
# 41 tMAW, MAC
# 8K*tREFI / 200k
86
# 42 - 47 (reserved)
00 00 00 00 00 00
# 48 - 55 (reserved)
00 00 00 00 00 00 00 00
# 56 - 59 (reserved)
00 00 00 00
# 60 Raw Card Extension, Module Nominal Height
# bits[4:0]: 0 = <= 15mm tall
# bits[7:5]: 0 = raw card revision 0-3
00
# 61 Module Maximum Thickness
# bits[3:0]: 0 = thickness front <= 1mm
# bits[7:4]: 0 = thinkness back <= 1mm
00
# 62 Reference Raw Card Used
# bits[4:0]: 0 = Reference Raw card A used
# bits[6:5]: 0 = revision 0
# bit7 : 0 = Reference raw cards A through AL
# revision B4
61
# 63 Address Mapping from Edge Connector to DRAM
# bit0 : 0 = standard mapping (not mirrored)
# bits[7:1]: reserved
00
# 64 - 71 (reserved)
00 00 00 00 00 00 00 00
# 72 - 79 (reserved)
00 00 00 00 00 00 00 00
# 80 - 87 (reserved)
00 00 00 00 00 00 00 00
# 88 - 95 (reserved)
00 00 00 00 00 00 00 00
# 96 - 103 (reserved)
00 00 00 00 00 00 00 00
# 104 - 111 (reserved)
00 00 00 00 00 00 00 00
# 112 - 116 (reserved)
00 00 00 00 00
# 117 - 118 Module ID: Module Manufacturers JEDEC ID Code
# 0x0001 = AMD
00 01
# 119 Module ID: Module Manufacturing Location - OEM specified
00
# 120 Module ID: Module Manufacture Year in BCD
# 0x15 = 2015
15
# 121 Module ID: Module Manufacture week
# 0x44 = 44th week
44
# 122 - 125: Module Serial Number
00 00 00 00
# 126 - 127: Cyclical Redundancy Code
b6 73
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