sed1355 ETC-unknow, sed1355 Datasheet - Page 447

• Manufacturer Part Number: sed1355
• Description: Sed1355 Embedded Ramdac Lcd/crt Controller
• Manufacturer: ETC-unknow

Epson Research and Development
Vancouver Design Center
4 MPC821 to SED1355 Interface
4.1 Hardware Description
Interfacing to the Motorola MPC821 Microprocessor
Issue Date: 99/05/05
Note:
Figure 4-1: Typical Implementation of MPC821 to SED1355 Interface
When connecting the SED1355 RESET# pin, the system designer should be aware of all
conditions that may reset the SED1355 (e.g. CPU reset can be asserted during wake-up
from power-down modes, or during debug states).
The SED1355 provides native Power PC bus support making it very simple to interface the
two devices. This application note describes both the environment necessary to connect the
SED1355 to the MPC821 native system bus and the connection between the SDU1355BOB
Evaluation Board and the Motorola MPC821 Application Development System (ADS).
Additionally, by implementing a dedicated display buffer, the SED1355 can reduce system
power consumption, improve image quality, and increase system performance as compared
to the MPC821’s on-chip LCD controller.
The SED1355, through the use of the MPC821 chip selects, can share the system bus with
all other MPC821 peripherals. The following figure demonstrates a typical implementation
of the SED1355 to MPC821 interface.
MPC821
SYSCLK
A[11:31]
RD/WR
D[0:15]
TSIZ0
TSIZ1
CS4
A10
TS
TA
BI
System
RESET
M/R#
AB[20:0]
DB[15:0]
CS#
BS#
WAIT#
RD/WR#
RD#
WE0#
WE1#
BUSCLK
RESET#
SED1355
X23A-G-008-03
SED1355
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