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

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

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

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Functional Block Diagrams<br />

<strong>DDR3</strong> <strong>SDRAM</strong> is a high-speed, CMOS dynamic random access memory. It is internally<br />

configured as an 8-bank DRAM.<br />

Figure 3: 512 Meg x 4 Functional Block Diagram<br />

ODT<br />

ZQ<br />

RZQ RESET#<br />

CKE<br />

VSSQ A12<br />

CK, CK#<br />

CS#<br />

RAS#<br />

CAS#<br />

WE#<br />

A[14:0]<br />

BA[2:0]<br />

18<br />

Command<br />

decode<br />

Address<br />

register<br />

Control<br />

logic<br />

Mode registers<br />

18<br />

15<br />

ZQCL, ZQCS<br />

Refresh<br />

counter<br />

11<br />

3<br />

BC4 (burst chop)<br />

OTF<br />

15<br />

Rowaddress<br />

MUX<br />

3<br />

15<br />

Bank<br />

control<br />

logic<br />

Columnaddress<br />

counter/<br />

latch<br />

ZQ CAL<br />

Bank 7<br />

Bank 6<br />

Bank 5<br />

Bank 4<br />

Bank 3<br />

Bank 2<br />

Bank 1<br />

Bank 0<br />

rowaddress<br />

32,768<br />

latch<br />

and<br />

decoder<br />

8<br />

3<br />

To pullup/pulldown<br />

networks<br />

Bank 7<br />

Bank 6<br />

Bank 5<br />

Bank 4<br />

Bank 3<br />

Bank 2<br />

Bank 1<br />

Bank 0<br />

memory<br />

array<br />

(32,768 x 256 x 32)<br />

Sense amplifiers<br />

8,192<br />

I/O gating<br />

DM mask logic<br />

256<br />

(x32)<br />

Column<br />

decoder<br />

Columns 0, 1, and 2<br />

32<br />

BC4<br />

OTF<br />

DM<br />

32<br />

32<br />

Columns 0, 1, and 2<br />

READ<br />

FIFO<br />

and<br />

data<br />

MUX<br />

<strong>2Gb</strong>: <strong>x4</strong>, <strong>x8</strong>, <strong>x16</strong> <strong>DDR3</strong> <strong>SDRAM</strong><br />

Functional Block Diagrams<br />

CK,CK#<br />

4<br />

4<br />

Data<br />

ODT<br />

control<br />

CK,CK#<br />

DLL<br />

READ<br />

drivers<br />

BC4<br />

Column 2<br />

(select upper or<br />

lower nibble for BC4)<br />

PDF: 09005aef826aaadc<br />

<strong>2Gb</strong>_<strong>DDR3</strong>_<strong>SDRAM</strong>.pdf – Rev. P 2/12 EN 14 <strong>Micron</strong> Technology, Inc. reserves the right to change products or specifications without notice.<br />

� 2006 <strong>Micron</strong> Technology, Inc. All rights reserved.<br />

Data<br />

interface<br />

WRITE<br />

drivers<br />

and<br />

input<br />

logic<br />

SW1<br />

DQ[3:0]<br />

DQS, DQS#<br />

SW1<br />

SW1<br />

V DDQ /2<br />

R TT,nom<br />

V DDQ /2<br />

R TT,nom<br />

V DDQ /2<br />

R TT,nom<br />

R TT(WR)<br />

SW2<br />

R TT(WR)<br />

SW2<br />

R TT(WR)<br />

SW2<br />

(1 . . . 4)<br />

(1, 2)<br />

DQ[3:0]<br />

DQS, DQS#<br />

DM

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