Page 52 Epson Research and Development
Vancouver Design Center
S1D13505 Programming Notes and Examples
X23A-G-003-07 Issue Date: 01/02/05
10 Identifying the S1D13505
The S1D13505 can only be identified once the host interface has been enabled. The steps
to identify the S1D13505 are:
1. If using an ISA evaluation board in a PC follow steps a. and b.
a. If a reset has occurred, confirm that 16-bit mode is enabled by writing
to address F8 0000h.
b. If hardware suspend is enabled then disable the suspend by writing to
address F0 0000h.
2. Enable the host interface by writing 00h to REG[1Bh].
3. Read REG[00h].
4. The production version of the S1D13505 will return a value of 0Ch.