14.11.2012 Views

2Gb: x4, x8, x16 DDR3 SDRAM - Micron

2Gb: x4, x8, x16 DDR3 SDRAM - Micron

2Gb: x4, x8, x16 DDR3 SDRAM - Micron

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Figure 18: Definition of Differential AC-Swing and t DVAC<br />

V IH,diff(AC)min<br />

V IH,diff,min<br />

0.0<br />

V IL,diff,max<br />

V IL,diff(AC)max<br />

t DVAC<br />

CK - CK#<br />

DQS - DQS#<br />

Half cycle tDVAC<br />

Table 29: Allowed Time Before Ringback ( t DVAC) for CK - CK# and DQS -<br />

DQS#<br />

tDVAC (ps) at |VIH,diff(AC) to VIL,diff(AC)| Slew Rate (V/ns)<br />

350mV 300mV<br />

>4.0 75 175<br />

4.0 57 170<br />

3.0 50 167<br />

2.0 38 163<br />

1.9 34 162<br />

1.6 29 161<br />

1.4 22 159<br />

1.2 13 155<br />

1.0 0 150<br />

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!