tc59lm836dkb TOSHIBA Semiconductor CORPORATION, tc59lm836dkb Datasheet - Page 57

• Manufacturer Part Number: tc59lm836dkb
• Description: 288mbits Network Fcram2 ? 2,097,152-words ? 4 Banks ? 36-bits
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Extended Mode Register fields
(E-2) Output Driver Impedance Control field (A1 to A4)
(E-1) DLL Switch field (A0)
(E-3) Strobe Select (A6 / A5)
(E-4) Reserved field (A7 to A13)
for normal operation.
QS and DQ Driver Strength can be chosen separately. A2-A1 specified the DQ Driver Strength. A4-A3
specified the QS Driver Strength.
(1) Unidirectional DS/QS mode
(2) Unidirectional DS/Free running QS mode
Two types of data strobe are supported. This field is used to choose the type of data strobe.
These bits are reserved for future operations and must be set to “0” for normal operation.
This bit is used to enable DLL. When the A0 bit is set “0”, DLL is enabled. This bit must be set to “0”
This field is used to choose Output Driver Strength. Three types of Driver Strength are supported.
operation.
DS is used to sample write data at write operation. QS is aligned with read data and always
clocking.
Data strobe is separated DS for write strobe and QS for read strobe.
DS is used to sample write data at write operation. QS is aligned with read data at Read
Data strobe is separated DS for write strobe and QS for read strobe.
A4
0
0
1
1
QS
A6
A3
0
0
1
1
0
1
0
1
A2
A5
0
0
1
1
0
1
0
1
DQ
Reserved
Reserved
Unidirectional DS/QS mode
Unidirectional DS/Free running QS mode
A1
0
1
0
1
OUTPUT DRIVER IMPEDANCE CONTROL
STROBE SELECT
Normal Output Driver
Strong Output Driver
Weak Output Driver
Reserved
TC59LM836DKB-33,-40
2005-11-08 57/65
Rev 1.4