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Epson Research and Development Page 15
Vancouver Design Center
Interfacing to the Philips MIPS PR31500/PR31700 Processor S1D13705
Issue Date: 01/02/13 X27A-G-012-02
5 Using the ITE IT8368E PC Card Buffer
If the system designer uses the ITE IT8368E PC Card and multiple-function I/O buffer, the
S1D13705 can be interfaced so that it “shares” a PC Card slot. The S1D13705 is mapped
to a rarely-used 16M byte portion of the PC Card slot buffered by the IT8368E. This makes
the S1D13705 virtually transparent to PC Card devices that use the same slot.
5.1 Hardware Description
The ITE8368E has been specially designed to support EPSON LCD controllers. The ITE
IT8368E provides eleven Multi-Function IO pins (MFIO). Configuration registers may be
used to allow these MFIO pins to provide the control signals required to implement the
S1D13705 CPU interface.
The PR31500/PR31700 processor only provides addresses A[12:0]; therefore devices
requiring 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.