12. DDR2-SDRAM Interface (DBSC2)
Rev.1.00 Jan. 10, 2008 Page 460 of 1658
REJ09B0261-0100
12.2
Input/Output Pins
Table 12.1 shows the pin configuration of the DBSC2.
Table 12.1 Pin Configuration of the DBSC2
Pin Name
Function
I/O
Description
MCK0
DDR2-SDRAM clock 0
Output
Clock output for the DDR2-SDRAM
MCK0
DDR2-SDRAM clock 0
Output
Clock output for the DDR2-SDRAM or
MCK0 inverted clock output
MCK1
DDR2-SDRAM clock 1
Output
Clock output for the DDR2-SDRAM
MCK1
DDR2-SDRAM clock 1
Output
Clock output for the DDR2-SDRAM or
MCK1 inverted clock output
MCKE
Clock enable
Output
CKE output signal
MCS
Chip select
Output
Chip select output signal
MWE
Write enable
Output
Write enable output signal
MRAS
Row address strobe
Output
Row address strobe output signal
MCAS
Column address strobe
Output
Column address strobe output signal
MA14 to MA0
Addresses
Output
Address output signals
MBA2, MBA1,
MBA0
Bank active
Output
Bank address output signal
MDQ31 to
MDQ0
Data
I/O
Data I/O signals
MDQS3 to
MDQS0
I/O data strobe
I/O
Data strobe I/O signals
MDQS3
to
MDQS0
I/O data strobe
I/O
Data strobe I/O signals or MDQS3 to
MDQS0 inverted signals
MDM3 to
MDM0
Data mask
Output
Data mask output signals
MODT
ODT enable
Output
ODT enable output signal to the SDRAM
MBKPRST
Power backup reset
Input
Used in power backup mode.
When this pin is brought low level, the
MCKE pin is also pulled low.
MVREF
Reference voltage input
Input
Input reference voltage
Содержание SH7781
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