W971GG6JB-25 Winbond Electronics, W971GG6JB-25 Datasheet - Page 17

• Manufacturer Part Number: W971GG6JB-25
• Description: IC DDR2-800 SDRAM 1GB 84-WBGA
• Manufacturer: Winbond Electronics

Specifications of W971GG6JB-25

• Format - Memory: RAM
• Memory Type: DDR2 SDRAM
• Memory Size: 1G (64M x 16)
• Speed: 2.5ns
• Interface: Parallel
• Voltage - Supply: 1.7 V ~ 1.9 V
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 84-WBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q5804012

For proper operation of adjust mode, WL = RL - 1 = AL + CL - 1 clocks and t
shown in Figure 7. For input data pattern for adjustment, D
by burst type (i.e., sequential or interleave).
7.2.3.3
Drive mode, both Drive (1) and Drive (0), is used for controllers to measure DDR2 SDRAM Driver
impedance. In this mode, all outputs are driven out t
output drivers are turned-off t
DM
CLK
CLK
DQS_in
DQ_in
CLK
CLK
CMD
CMD
DQ
DQS
DQS
EMRS
Drive Mode
EMRS
t
OIT
Enter Drive mode
OCD adjust mode
DQS high & DQS low for Drive (1), DQS low & DQS high for Drive (0)
WL
NOP
NOP
tDS tDH
OIT
DT0
NOP
NOP
after “OCD calibration mode exit” command as shown in Figure 8.
DQs high for Drive (1)
DQs low for Drive (0)
DT1
Figure 7 – OCD Adjust Mode
Figure 8 – OCD Drive Mode
DQS
DT2
NOP
NOP
DT3
- 17 -
NOP
NOP
OIT
after “enter drive mode” command and all
T0
OCD calibration mode exit
EMRS
NOP
- D
OCD calibration mode exit
t
OIT
T3
Publication Release Date: Mar. 28, 2011
WR
is a fixed order and is not affected
HI-Z
NOP
NOP
DS
W971GG6JB
/t
DH
EMRS
NOP
should be met as
Revision A07
NOP
NOP