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Epson Research and Development

 

Vancouver Design Center

 

 

5 System Design Using the IT8368E PC Card Buffer

If the system designer uses an ITE IT8368E PC Card and multiple-function IO buffer, the S1D13504 can be interfaced with the PR31500/PR31700 without using a PC Card slot. Instead, the S1D13504 is mapped to a rarely-used 16M byte portion of the PC Card slot buffered by the IT8368E. This makes the S1D13504 virtually transparent to PC Card devices that use the same slot.

5.1 Hardware Description—Using One IT8368E

The ITE IT8368E has been specifically designed to support EPSON LCD/CRT controllers. The IT8368E provides eleven Multi-Function IO pins (MFIO). Configuration registers can be used to allow these MFIO pins to provide the control signals required to implement the S1D13504 CPU interface.

The Philips PR31500/PR31700 processor only provides addresses A[12:0], therefore devices that occupy more address space must use an external device to latch A[25:13]. The IT8368E’s MFIO pins can be configured to provide this latched address. However, when using the S1D13504, five MFIO pins are utilized for S1D13504 control signals and cannot provide latched addresses. In this case, an external latch must be used to provide the high- order address bits. For a solution that does not require a latch, refer to Section 5.2, ‘Hardware Description—Using Two IT8368E’s”.

S1D13504

Interfacing to the Philips MIPS PR31500/PR31700 Processor

X19A-G-005-08

Issue Date: 01/02/02

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Epson S1D13504 manual System Design Using the IT8368E PC Card Buffer, Hardware Description-Using One IT8368E