SED1374 Datasheet, PDF (266/420 Pages) Epson Company – SED1374 Embedded Memory Color LCD Controller

Page 10
EPSON Research and Development
Vancouver Design Center
3 System Design Using the ITE IT8368E PC Card Buffer
If the system designer uses the ITE IT8368E PC Card and multiple-function I/O buffer, the
SED1374 can be interfaced so that it ’shares’ a PC Card slot. The SED1374 is mapped to a rarely-
used 16M byte portion of the PC Card slot buffered by the IT8368E. This makes the SED1374
virtually transparent to PC Card devices that use the same slot.
3.1 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 SED1374 CPU interface.
The TX3912 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.
TX3912
HA[12:0]
ENDIAN
HD[31:24]
HD[23:16]
CARDxWAIT*
DCLKOUT
IT8368E
LHA[23]/MFIO[10]
LHA[22]/MFIO[9]
LHA[21]/MFIO[8]
LHA[20]/MFIO[7]
LHA[19]/MFIO[6]
LHA[15:13]/
MFIO[2:0]
V_{DD pull-up}
Clock divider
+3.3V
SED1374
IO V_DD, CORE V_DD
AB[12:0]
AB[15:13]
DB[7:0]
DB[15:8]
...or...
System RESET
RESET#
Oscillator
WAIT#
See text
CLKI
BCLK
WE1#
WE0#
RD1#
RD0#
CS#
BS#
Figure 3-1: SED1374 to TX3912 Connection Using an IT8368E
SED1374
X26A-G-004-01
Interfacing to the Toshiba MIPS TX3912 Processor
Issue Date: 98/11/09