S1D13503 Epson Electronics America, Inc., S1D13503 Datasheet - Page 254

• Manufacturer Part Number: S1D13503
• Description: S1d13503 Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 6
2 MC68340 MPU INTERFACE
2.1 MC68340 Setup
S1D13503
X18A-G-004-04
The following sections provide the necessary settings and equations to complete the interface between the S1D13503 and
the MC68340 microcontroller.
For the purpose of this example, the following conditions apply:
The internal chip select signal CS3 of the MC68340, along with external DSACK1 response, is employed to access the
S1D13503. Direct mapping of the I/O with starting address at 00000000h, and 128Kbytes of display memory with starting
address 00020000h are also used.
1.
2.
3.
4.
Settings for the Address Mask register and Base Address register for the above conditions are:
CS3 with 256kbyte block size - starting address at 00000000h and ending address at 0003FFFFh
External DSACK1 response - 16-bit port
Don’t care Function Codes and with CPU space access
Both read and write accesses are allowed
058h - 05Bh
05Ch - 05Fh
MC68340
DSACK1
A0-A19
D0-D15
RESET
SIZ0
CS3
R/W
AS
= 0003FFFFh
= 000000F5h
Figure 1: MC68340 MPU Interface Block Diagram
A0
A10-A17
Address Mask register
Base Address register
V
PAL
CC
4.7k
V
CC
Epson Research and Development
MC68340 Interface Considerations
MEMCS#
IOCS#
BHE#
AB0-AB19
DB0-DB15
MEMR#
MEMW#
READY
IOR#
IOW#
RESET
S1D13503
Vancouver Design Center
VD0-VD3
VD13
Issue Date: 01/01/30
V
CC
10k