IDT72T6480L10BB IDT, Integrated Device Technology Inc, IDT72T6480L10BB Datasheet - Page 13

• Manufacturer Part Number: IDT72T6480L10BB
• Description: IC FLOW-CTRL 48BIT 10NS 324-BGA
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT72T6480L10BB

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 72T6480L10BB

CONNECTING THE DDR SDRAM
sequential flow-control device (see Figure 2a-2g). The external memory
interface is designed to seamlessly connect one or more DDR SDRAMs. The
output signal names should be connected directly to its corresponding input
signal on the DDR SDRAM. There are three signals on the DDR SDRAM that
must be tied to a static state. CKE, CS, and DM. Table 4 outlines how to connect
the many interface pins to the DDR SDRAM(s). Figure 3 and 4 are some
examples of the memory interface connections for various density configura-
tions. For information on DDR SDRAM layout recommendations, please see
IDT application note AN-423.
NOTES:
1. • 12-bit address bus for 8Mb x16
2. Refer to Total Available Memory Usage section for details.
IDT72T6480 2.5V, SEQUENTIAL FLOW-CONTROL DEVICE
x12, x24, x48 BIT WIDE CONFIGURATION
• 13-bit address bus for 16Mb x16
Below are the various chipset solution configurations available to the
DDR SDRAM: 128Mb [4Mb x 32] or 256Mb [8Mb x 32]
Total Memory Density: 128Mb or 256Mb
Useable Memory
DDR SDRAM: 256Mb [16Mb x 16]
Total Memory Density: 256Mb
Useable Memory
DDR SDRAM: 128Mb [4Mb x 32] or 256Mb [8Mb x 32]
Total Memory Density: 256Mb or 512Mb
Useable Memory
Figure 2b
Figure 2c. Configuration 3 - Three Chip Solution
SFC
Figure 2a. Configuration 1 - Two Chip Solution
IDT
SFC
IDT
SFC
IDT
(1)
. Configuration 2 - Two Chip Solution
Data Bus
Address Bus
(2)
(2)
(2)
Address Bus
Address Bus
: 108Mb or 252Mb
: 216Mb
: 216Mb or 504Mb
Data Bus
Data Bus
64
32
12
16
13
12
32
32
12
128Mb or
128Mb or
SDRAM
SDRAM
256Mb
256Mb
SDRAM
DDR
DDR
256Mb
DDR
6358 drw04
6358 drw05
6358 drw06
13
DDR SDRAM: 128Mb [4Mb x 32] or 256Mb [8Mb x 32]
Total Memory Density: 256Mb or 512Mb
Useable Memory
DDR SDRAM: 256Mb [16Mb x 16]
Total Memory Density: 512Mb
Useable Memory
DDR SDRAM: 256Mb [16Mb x 16]
Total Memory Density: 1Gb
Useable Memory
Figure 2e
DDR SDRAM: 256Mb [16Mb x 16]
Total Memory Density: 768Mb
Useable Memory
Figure 2d. Configuration 4 - Three Chip Solution
Figure 2g
Figure 2f
SFC
IDT
SFC
SFC
IDT
SFC
IDT
IDT
(1)
(1)
(1)
. Configuration 5 - Three Chip Solution
. Configuration 6 - Four Chip Solution
. Configuration 7 - Five Chip Solution
Data Bus
Address Bus
Data Bus
Data Bus
Data Bus
Address Bus
Address Bus
Address Bus
64
(2)
(2)
(2)
(2)
: 108Mb or 252Mb
: 504Mb
36
: 1008Mb
: 567Mb
36
32
13
13
12
13
COMMERCIAL AND INDUSTRIAL
16
16
32
16
16
4
4
16
16
13
12
13
13
13
TEMPERATURE RANGES
SDRAM
256Mb
FEBRUARY 10, 2009
DDR
SDRAM
128Mb or
256Mb
SDRAM
SDRAM
256Mb
DDR
256Mb
DDR
DDR
6358 drw10
6358 drw09
6358 drw07
6358 drw08