Epson technical manual S1D13705 S1D13705 aliased 128 times 0900 0000h

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5.2 IT8368E Configuration

The IT8368E provides eleven multi-function IO pins (MFIO). The IT8368E must have both “Fix Attribute/IO” and “VGA” modes on. When both these modes are enabled, the MFIO pins provide control signals needed by the S1D13705 host bus interface, and a 16M byte portion of the system PC Card attribute and IO space is allocated to address the S1D13705. When accessing the S1D13705 the associated card-side signals are disabled in order to avoid any conflicts.

For mapping details, refer to section 3.3: “Memory Mapping and Aliasing.” For connection

details see Figure 5-1:“S1D13705 to PR31500/PR31700 Connection Using an IT8368E,” on page 16. For further information on the IT8368E, refer to the IT8368E PC Card/GPIO Buffer Chip Specification.

Note

When a second IT8368E is used, that circuit should not be set in VGA mode.

5.3 Memory Mapping and Aliasing

When the PR31500/PR31700 accesses the PC Card slots without the ITE IT8368E, its system memory is mapped as in Table 5-1:PR31500/PR31700 to PC Card Slots Address Mapping With and Without the IT8368E.

Note

Bit CARD1IOEN or CARD2IOEN, depending on which card slot is used, must to be set to 0 in the PR31500/PR31700 Memory Configuration Register 3.

When the PR31500/PR31700 accesses the PC Card slots buffered through the ITE IT8368E, bits CARD1IOEN and CARD2IOEN are ignored and the attribute/IO space of the PR31500/PR31700 is divided into Attribute, I/O and S1D13705 access. Table 5-1:

PR31500/PR31700 to PC Card Slots Address Mapping With and Without the IT8368E

provides all details of the Attribute/IO address reallocation by the IT8368E.

Table 5-1: PR31500/PR31700 to PC Card Slots Address Mapping With and Without the IT8368E

PC Card	TX3912	Size	Using the ITE IT8368E	Direct Connection,	Direct Connection,
Slot #	Address			CARDnIOEN=0	CARDnIOEN=1
	0800 0000h	16M byte	Card 1 IO	S1D13705
			S1D13705 (aliased 128 times
1	0900 0000h	16M byte		(aliased 512 times	Card 1 IO
			at 128K byte intervals)	at 128K byte intervals)
	0A00 0000h	32M byte	Card 1 Attribute
	6400 0000h	64M byte	Card 1 Memory	S1D13705 (aliased 512 times at 128K byte intervals)
	0C00 0000h	16M byte	Card 2 IO	S1D13705
			S1D13705 (aliased 128 times
2	0D00 0000h	16M byte		(aliased 512 times	Card 2 IO
			at 128K byte intervals)	at 128K byte intervals)
	0E00 0000h	32M byte	Card 2 Attribute
	6800 0000h	64M byte	Card 2 Memory	S1D13705 (aliased 512 times at 128K byte intervals)

Interfacing to the Philips MIPS PR31500/PR31700 Processor	S1D13705
Issue Date: 01/02/13	X27A-G-012-02