Page 16

Epson Research and Development

 

Vancouver Design Center

 

 

The Generic MPU host interface control signals of the S1D13504 are asynchronous with respect to the S1D13504 bus clock. This gives the system designer full flexibility in choosing the appropriate source (or sources) for CLKI and BUSCLK. Deciding whether both clocks should be the same and whether to use DCLKOUT (divided) as the clock source, should be based on the desired:

pixel and frame rates.

power budget.

part count.

maximum S1D13504 clock frequencies.

The S1D13504 also has internal clock dividers providing additional flexibility.

5.2 Hardware Description—Using Two IT8368E’s

The following implementation uses a second IT8368E, not in VGA mode, in place of an address latch. The pins LHA23 and LHA[20:13] provide the latch function instead.

S1D13504

Interfacing to the Toshiba MIPS TX3912 Processor

X19A-G-012-04

Issue Date: 01/02/02

Page 496
Image 496
Epson S1D13504 manual Hardware Description-Using Two IT8368E’s