sed1355 ETC-unknow, sed1355 Datasheet - Page 198

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

Page 42
10 Identifying the SED1355
SED1355
X23A-G-003-05
The SED1355 can only be identified once the host interface has been enabled. The steps to identify
the SED1355 are:
1.
2.
3.
4.
If using an ISA evaluation board in a PC follow steps a. and b.
Enable the host interface by writing 00h to REG[1Bh].
Read REG[00h].
The production version of the SED1355 will return a value of 0Ch.
a.
b.
If a reset has occurred, confirm that 16-bit mode is enabled by writing to
address F80000h.
If hardware suspend is enabled then disable the suspend by writing to
address F00000h.
Epson Research and Development
Programming Notes and Examples
Vancouver Design Center
Issue Date: 99/04/27