MT40A512M16JY-075EAIT Datasheet, PDF(166/358 Page) Micron Technology – 8Gb: x4, x8, x16 DDR4 SDRAM

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MT40A512M16JY-075EAIT Datasheet, PDF (166/358 Pages) Micron Technology – 8Gb: x4, x8, x16 DDR4 SDRAM

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8Gb: x8, x16 Automotive DDR4 SDRAM

CRC Write Data Feature

Table 59: CRC Data Mapping for x16 Devices, BC4 (Continued)

Transfer

Function

0

1

2

3

4

5

6

7

8

9

LDM_n/LDBI_n D68

D69

D70

D71

1

1

1

1

1

1

DQ8

D76

D77

D78

D79

1

1

1

1

CRC8

1

DQ9

D84

D85

D86

D87

1

1

1

1

CRC9

1

DQ10

D92

D93

D94

D95

1

1

1

1

CRC10

1

DQ11

D100 D101 D102 D103

1

1

1

1

CRC11

1

DQ12

D108 D109 D110 D111

1

1

1

1

CRC12

1

DQ13

D116 D117 D118 D119

1

1

1

1

CRC13

1

DQ14

D124 D125 D126 D127

1

1

1

1

CRC14

1

DQ15

D132 D133 D134 D135

1

1

1

1

CRC15

1

UDM_n/UDBI_n D140 D141 D142 D143

1

1

1

1

1

1

CRC Equations for x8 Device in BC4 Mode with A2 = 0 and A2 = 1

The following example is of a CRC tree when x8 is used in BC4 mode (x4 and x16 CRC

trees have similar differences).

CCMTD-1406124318-10419

8gb_auto_ddr4_dram.pdf - Rev. C 3/17 EN

166

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