H5GQ2H24AFR-R0C datasheet(55/172 Pages) HYNIX

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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

4.6. MODE REGISTER 5 (MR5)

Mode Register 5 defines digital RAS, PLL band‐width and low power modes as shown in Figure 29.

The register is programmed via the MODE REGISTER SET (MRS) command with BA0=1, BA1=0, BA2=1

and BA3=0.

Figure 29. Mode Register 5 (MR5) Definition

LP2

0Off

1On

BA3 BA2 BA1 BA0

A12

A11

A10

010

RFU

PLL Bandwidth

LP3

LP2

RFU

‐3dB [MHz]

BW3dBLL

Peak [MHz]

BWPKLL

Peak [dB]

PKLL

＜ 2.14

＜1.58

＜1.87

＜ 2.14

LP3

0Off

1On

Note 1) PLL BW characteristics is measured at 5Gbps

Note 2) PLL BW is linearly proportional to the data rate

Note 3) -3dB frequency is approximately interpolated from simulation

& measurement

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