H5GQ1H24AFR-R0C datasheet(53/173 Pages) HYNIX

53 / 173 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. 1.0 /Nov. 2009

H5GQ1H24AFR

The EDC hold pattern will not be transmitted when the device is in address training mode, in WCK2CK

training mode, in RDQS mode, in self refresh mode, in reset state, in power‐down state with the LP2 bit

set, or in scan mode.

With register bit A11 set High, EDC1 and EDC3 will transmit the inverted EDC hold pattern, resulting in

a pseudo‐differential pattern. Please note that this function is not available in x16 configuration. Bit A11 is

ignored for READ, WRITE and RDTR CRC bursts and the clock phase information in WCK2CK training

mode.

CRC Write Latency (CRCWL)

The value of the CRC write latency is loaded into register bits A4‐A6. If the DRAM vendor does not

support the Mode Register definition of CRCWL, the Mode Register settings will be ignored. In that case

the valid fixed latency is given with the DRAM vendor’s specification. The user must set the CRCWL

Mode Register bits.

Speed

Allowable Operating Frequency (Gbps)

CRCWL14

CRCWL13

CRCWL12

CRCWL11

CRCWL10

CRCWL9

CRCWL8

6.0Gbps

5.5Gbps

5.0Gbps

4.5Gbps

4.0Gbps

CRC Read Latency (CRCRL)

The value of the CRC read latency is loaded into register bits A7‐A8. If the DRAM vendor does not support

the Mode Register definition of CRCRL, the Mode Register settings will be ignored. In that case the valid

fixed latency is given with the DRAM vendor’s specification. The user must set the CRCRL Mode Register

bits.

Speed

RDBI

ON/OFF

Allowable Operating Frequency (Gbps)

CRCRL3

CRCRL2

CRCRL1

CRCRL0

6.0Gbps

OFF

5.5Gbps

OFF

5.0Gbps

OFF

4.5Gbps

OFF

4.0Gbps

OFF

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