Section 12 DDR-SDRAM Interface (DDRIF)
Rev.1.00 Dec. 13, 2005 Page 403 of 1286
REJ09B0158-0100
12.2 Input/Output
Pins
Table 12.1 shows the DDRIF pin configuration. For details on connection with the DDR-SDRAM,
see the DDR-SDRAM pin information.
Table 12.1 Pin Configuration
Pin Name
Function
I/O
Description
MCLK
DDR-SDRAM clock
Output
Clock output for DDR-SDRAM
MCLK
DDR-SDRAM clock
Output
Clock output for DDR-SDRAM
Inverse of the MCLK
CKE
Clock enable
Output
When this pin is set high, the clock
signal is active. When this pin is set
low, the clock signal is inactive.
MCS
Chip select
Output
Chip select output
MWE
Write enable
Output
Write enable output
MA13 to MA0
Address
Output
Row/column address
BA1, BA0
Bank address
Output
Bank address output
MD31 to MD0
Data
I/O
Data I/O
MDQS3 to MDQS0
I/O data strobe
I/O
I/O data strobe
MDQM3 to MDQM0 Data mask
Output
I/O data mask signal
MRAS
Row address strobe
Output
Row address strobe signal
MCAS
Column address strobe
Output
Column address strobe signal
BKPRST
Power back-up reset
Input
When this pin goes low, the CKE pin
also goes low
DDR-VREF
Reference voltage input
Input
Input reference voltage
Содержание SH7780 Series
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