H5GQ2H24AFR-R0C datasheet(13/172 Pages) HYNIX

13 / 172 page

This document is a general product description and is subject to change without notice. Hynix Semiconductor does not assume any

responsability for use of circuits described. No patent licenses are implied.

Rev. 1.2 /Nov. 2011

H5GQ2H24AFR

1.2. VENDOR ID

GDDR5 SGRAMs are required to include a Vendor ID feature that allows the controller to receive informa‐

tion from the GDDR5 SGRAM to differentiate between different vendors and different devices using a

software algorithm.

When the Vendor ID function is enabled the GDDR5 SGRAM will provide its Manufacturers Vendor Code

on bits [3:0] as shown in Table 2; Revision Identification on bits [7:4]; Density on bits [9:8] ; FIFO Depth on

bits [11:10] as shown in Table 3 & Table4. Bits [15:12] are RFU.

Vendor ID is part of the INFO field of Mode Register 3 (MR3) and is selected by issuing a MODE REGIS‐

TER SET command with MR3 bit A6 set to 1, and bit A7 set to 0. MR3 bits A0‐A5 and A8‐A11 are set to the

desired values.

The Vendor ID will be driven onto the DQ bus after the MRS command that sets bits A6 to 1 and A7 to 0.

The DQ bus will be continuously driven until an MRS command sets MR3 A6 and A7 back to 0 to disable

the INFO field or to another valid state for the INFO field if the INFO field includes support for additional

vendor specific information. The DQ bus will be in ODT state after tWRIDOFF (max). The code can be sam‐

pled by the controller after waiting tWRIDON (max) and before tWRIDOFF (min). DBI is not enabled or

ignored during all Vendor ID operations. Table 4 shows the mapping of the Vendor ID info to the physical

DQs. The 16 bits of Vendor ID are sent on Byte 0 and 2 when MF=0. When MF=1 the 16 bits are sent on

Byte 1 and 3. Optionally the vendor may replicate the data on the other 2 bytes when in x32 mode. Byte 0

would be replicated on Byte 1 and Byte 2 would be replicated on Byte 3 when MF=0. When MF=1, Byte 1

would be replicated on Byte 0 and Byte 3 would be replicated on Byte 2.

TABLE 2. Manufacturers Vendor Code

Manufacturers ID

Bit 3

Bit 2

Bit 1

Bit 0

Name of Company

0000

Reserved

0001

Samsung

0010

Qimonda

0011

Elpida

0100

Etron

0101

Nanya

0110

Hynix

0111

ProMOS

1000

Winbond

1001

ESMT

1010

Reserved

1011

Reserved

1100

Reserved

1101

Reserved

1110

Reserved

1111

Micron

H5GQ2H24AFR-R0C 数据表(PDF) 13 Page - Hynix Semiconductor

H5GQ2H24AFR-R0C 数据表(HTML) 13 Page - Hynix Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

H5GQ2H24AFR-R0C 数据表(PDF) 13 Page - Hynix Semiconductor

H5GQ2H24AFR-R0C 数据表(HTML) 13 Page - Hynix Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载