tc59lm814 TOSHIBA Semiconductor CORPORATION, tc59lm814 Datasheet - Page 35

• Manufacturer Part Number: tc59lm814
• Description: 256mbits Network Fcram1
• Manufacturer: TOSHIBA Semiconductor CORPORATION

• Addressing sequence of Sequential mode (A3)
• Addressing sequence of Interleave mode
address input to the device. The address is varied by the Burst Length as the following.
bits in the sequence shown as the following.
(R-3) CAS Latency field (A6 to A4)
(R-4) Test Mode field (A7)
(R-5) Reserved field in the Regular Mode Register
CAS Latency = 3
Command
A column access is started from the inputted lower address and is performed by incrementing the lower
A column access is started from the inputted lower address and is performed by interleaving the address
DQS
CLK
RDA command to the first data read. The minimum values of CAS Latency depends on the frequency
of CLK. In a write mode, the place of clock which should input write data is CAS Latency cycles − 1.
• Reserved bits (A8 to A14)
CLK
DQ
This field specifies the number of clock cycles from the assertion of the LAL command following the
This bit is used to enter Test Mode for supplier only and must be set to “0” for normal operation.
These bits are reserved for future operations. They must be set to “0” for normal operation.
Data 0
Data 1
Data 2
Data 3
DATA
Data 0
Data 1
Data 2
Data 3
DATA
RDA
A6
ּּּA8 A7 A6 A5 A4 A3 A2 A1 A0
ּּּA8 A7 A6 A5 A4 A3 A2 A1 A0
ּּּA8 A7 A6 A5 A4 A3 A2 A1 A0
ּּּA8 A7 A6 A5 A4 A3 A2 A1 A0
0
0
0
0
1
1
1
1
ACCESS ADDRESS
Addressing sequence for Sequential mode
Addressing sequence for Interleave mode
LAL
n + 1
n + 2
n + 3
A5
n
0
0
1
1
0
0
1
1
ACCESS ADDRESS
A4
0
1
0
1
0
1
0
1
2 words (address bits is LA0)
not carried from LA0~LA1
4 words (address bits is LA1, LA0)
not carried from LA1~LA2
BURST LENGTH
CAS LATENCY
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
3
4
TC59LM814/06CTG-50,-60
Data
0
BURST LENGTH
2 words
4 words
Data
1
Data
2
2005-06-21 35/39
Data
3
Rev 1.2