sed1355 ETC-unknow, sed1355 Datasheet - Page 450

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

Page 18
4.3 SED1355 Hardware Configuration
4.4 Register/Memory Mapping
SED1355
X23A-G-008-03
Pin Name
SED1355
MD[3:1]
MD11
MD0
MD4
MD5
MD9
8-bit host bus interface
110 = PowerPC host bus interface selected
Little Endian
Wait# signal is active high
Reserved
Alternate Host Bus Interface Selected
= required settings for MPC821 support.
The SED1355 latches MD15 through MD0 to allow selection of the bus mode and other
configuration data on the rising edge of RESET#. For details on configuration, refer to the
SED1355 Hardware Functional Specification, document number X23A-A-001-xx.
The following table shows those configuration settings important to the MPC821 host bus
interface.
The DRAM on the MPC821 ADS board extends from address 0 through 3F FFFFh, so the
SED1355 is addressed starting at 40 0000h. A total of 4M bytes of address space is used,
where the lower 2M bytes is reserved for the SED1355 on-chip registers and the upper 2M
bytes is used to access the SED1355 display buffer.
value on this pin at rising edge of RESET# is used to configure: (1/0)
Table 4-2: Summary of Power-On/Reset Options
1
16-bit host bus interface
Big Endian
Wait# signal is active low
Configure SUSPEND# pin as Hardware
Suspend Enable
Primary Host Bus Interface Selected
Interfacing to the Motorola MPC821 Microprocessor
0
Epson Research and Development
Vancouver Design Center
Issue Date: 99/05/05