tc59lm906amg TOSHIBA Semiconductor CORPORATION, tc59lm906amg Datasheet - Page 54

• Manufacturer Part Number: tc59lm906amg
• Description: Mos Digital Integrated Circuit Silicon Monolithic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Extended Mode Register fields
(E-1) DLL Switch field (A0), (DS)
(E-2) Output Driver Impedance Control field (A1, A6) (DIC)
(E-3) Off-Chip Driver (OCD) Impedance Adjustment for full strength output driver (A7 to A9) (OCD)
Output Driver Strength can be set by field in EMRS with OCD calibration default (A7~A9=1 at EMRS).
OCD calibration is available. The driver strength set by DIC field is the initial driver level at OCD
Impedance Adjustment. When OCD calibration is performed, A1 and A6 inputs at EMRS must be “1” for
Full Strength Output Driver.
sequence. Every calibration mode command should be followed by “OCD calibration mode exit” before
any other command being issued. MRS should be set before entering OCD impedance adjustment.
normal operation.
This bit is used to enable DLL. When the A0 bit is set “0”, DLL is enabled. This bit must set to “0” for
This field is used to choose Output Driver Strength. Four types of Driver Strength are supported.
Output Driver Strength can be set by DIC field (E-2). In case of choosing Full strength Output Driver,
The Network FCRAM
EMRS: OCD calibration mode exit
EMRS: OCD calibration mode exit
DQ &DQS High; DQS Low
BL=4 code Input to all DQs
Enter Adjust Mode
Inc, Dec, or NOP
EMRS: Drive(1)
A6
EMRS:
0
0
1
1
Start
Test
TM
Need Calibration
supports driver calibration feature and the flow chart below is an example of
A1
0
1
0
1
MRS should be set before entering OCD impedance adjustment.
ALL OK
EMRS: OCD calibration mode exit
OUTPUT DRIVER IMPEDANCE CONTROL
EMRS: OCD calibration mode exit
Full Strength Output Driver
Normal Output Driver
Strong Output Driver
Weak Output Driver
End
TC59LM914/06AMG-37,-50
ALL OK
EMRS: OCD calibration mode exit
EMRS: OCD calibration mode exit
DQ &DQS Low; DQS High
BL=4 code Input to all DQs
Enter Adjust Mode
Inc, Dec, or NOP
EMRS: Drive(0)
EMRS:
2004-08-20 54/59
Test
Need Calibration
Rev 1.0