SED1374 Datasheet, PDF (413/420 Pages) Epson Company – SED1374 Embedded Memory Color LCD Controller

Epson Research and Development
Vancouver Design Center
Page 9
3 SED1374 Bus Interface
This section is a summary of the host bus interface modes available on the SED1374 and
offers some detail on the Generic #2 Host Bus Interface used to implement the interface to
an 8-bit processor.
The SED1374 provides a 16-bit interface to the host microprocessor which may operate in
one of several modes compatible with most of the popular embedded microprocessor
families. The bus interface mode used in this example is:
• Generic #2 (this bus interface is ISA-like and can easily be modified to support an 8-bit
CPU).
3.1 Host Bus Pin Connection
The following table shows the functions of each host bus interface signal.
Table 3-1: Host Bus Interface Pin Mapping
SED1374
Pin Names
Generic #2
Description
AB[15:1]
A[15:1]
Address [15:1]
AB0
A0
Address A0
DB[15:0]
D[15:0]
Data
WE1#
BHE#
Byte High Enable
CS#
External Decode Chip Select
BCLK
BCLK
Bus Clock
BS#
RD/WR#
RD#
n/c
n/c
RD#
Must be tied to IO V_DD
Must be tied to IO V_DD
Read
WE0#
WE#
Write
WAIT#
WAIT#
RESET#
RESET#
For details on configuration, refer to the SED1374 Hardware Functional Specification,
document number X26A-A-001-xx.
Interfacing to an 8-bit Processor
Issue Date: 99/05/04
SED1374
X26A-G-013-01