S1D13705 Epson Electronics America, Inc., S1D13705 Datasheet - Page 286

• Manufacturer Part Number: S1D13705
• Description: S1d13705 Embedded Memory Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 16
6.4 Decoding Logic
6.5 Clock Input Support
S1D13705
X27A-G-005-03
!CS
!MEMCS16 = (Address1 >= ^h0C0000) & (Address1 <= ^h0DFFFF) & !ADDR & !CS
!WE0
!RD
= (Address >= ^hC0000) & (Address <= ^hDFFFF) & !ADDR & REFRESH & ENAB
# (Address1 >= ^hF00000) & (Address1 <= ^hF1FFFF) & ADDR & REFRESH & ENAB;
# (Address1 >= ^hF00000) & (Address1 <= ^hF1FFFF) & ADDR & !CS;
= (!CS & !ADDR & !SMEMW) # (!CS & ADDR & !MEMW);
= (!CS & !ADDR & !SMEMR) # (!CS & ADDR & !MEMR);
Note
Note
When using the header strips to provide the bus interface observe the following:
• All signals on the ISA bus card edge must be isolated from the ISA bus (do not plug the
• U7, a PLD of type 22V10-15, is used to provide the S1D13705 CS# (pin 74) and other
All the required decode logic is provided through a PLD of type 22V10-15 (U7, socketed).
This PAL contains the following equations.
The input clock (CLKI) frequency can be up to 50MHz for the S1D13705 if the internal
clock divide-by-2 mode is set. If the clock divider is not used, the maximum CLKI
frequency is 25MHz. There is no minimum input clock frequency.
A 25.0MHz oscillator (U2, socketed) is provided as the input clock source. However,
depending on the LCD resolution , desired frame rate, and power consumtion budget, a
lower frequency clock may be required.
card into a computer). Power must be provided through the headers.
decoding logic signals for ISA bus mode. For non-ISA applications, this functionality
must be provided externally. Remove the PAL from its socket to eliminate conflicts
driving S1D13705 control signals. Refer to Table 5-1: “Host Bus Interface Pin
Mapping” for connection details.
When using a 3.3V host bus interface, IO V
(JP1) to the 2-3 position. Refer to Table 2-3: “Jumper Settings,” on page 9.
ADDR = Switch S1-5 (see Table 2-1:, “Configuration DIP Switch Settings,” on page 8).
S5U13705B00C Rev. 1.0 ISA Bus Evaluation Board User Manual
DD
must be set to 3.3V by setting jumper
Epson Research and Development
Vancouver Design Center
Issue Date: 01/02/13