SED1374 Datasheet, PDF (290/420 Pages) Epson Company – SED1374 Embedded Memory Color LCD Controller

Page 12
4 MC68328 To SED1374 Interface
Epson Research and Development
Vancouver Design Center
4.1 Hardware Description
The interface between the MC68328 and the SED1374 can be implemented using either the
MC68K #1 or Generic #1 host bus interface of the SED1374.
4.1.1 Using The MC68K #1 Host Bus Interface
The MC68328 multiplexes dual functions on some of its bus control pins (specifically
UDS, LDS, and DTACK). In implementations where all of these pins are available for use
as bus control pins, then the SED1374 interface is a straightforward implementation of the
“MC68K #1” host bus interface. For further information on this host bus interface, refer to
the SED1374 Hardware Functional Specification, document number
X26A-A-001-xx.
The following diagram shows a typical implementation of the MC68328 to SED1374 using
the MC68K #1 host bus interface.
MC68328
A[15:0]
D[15:0]
CSB3
DTACK
AS
UDS
LDS
R/W
CLK0
RESET
Vcc
470
Vcc
SED1374
AB[15:1]
DB[15:0]
CS#
WAIT#
BS#
WE1#
AB0
RD/WR#
RD#
BUSCLK
RESET#
Figure 4-1: Typical Implementation of MC68328 to SED1374 Interface - MC68K #1
SED1374
X26A-G-007-02
Interfacing to the Motorola MC68328 ‘Dragonball’ Microprocessor
Issue Date: 99/01/05