Board Settings; Cnf[2:0] Configuration - Epson S5U13781R00C100 User Manual

3

Board Settings

3.1

CNF[2:0] Configuration

The S1D13781 has three configuration inputs, CNF[2:0], which are used to configure the S1D13781 host
interface type as described in Table 3-1, Signal Allocation for Host Interface.
The S5U13781R00C100 reference board defaults to the SPI interface (the default setting for CNF[2:0] =
111).
S1D13781 Direct 16bit
Pin name Mode 1
CNF[2:0] 000
CS# CS#
WR# WR#
RD# RD#
UB# UB#
LB# LB#
AB0 TE
AB1 AB1
AB[18:2] AB[18:2]
DB0 DB0
DB1 DB1
DB[7:2] DB[7:2]
DB8 DB8
DB[15:9] DB[15:9]
Notes:
"H" means direct connection to IOVDD
"L" means direct connection to GND
"Low" means internal pull-down for address bus active
TE is determined by REG[22h] Display Settings Register bits 6-5
X94A-G-004-01
Issue Date: 2012/03/26
Table 3-1 Signal Allocation for Host Interface
Direct 16bit Indirect 16bit
Mode 2 Mode 1
001 010
CS# CS#
RDU# WR#
RDL# RD#
WRU# UB#
WRL# LB#
TE TE
AB1 P/C#
AB[18:2] Low
DB0 DB0
DB1 DB1
DB[7:2] DB[7:2]
DB8 DB8
DB[15:9] DB[15:9]
Seiko Epson Corporation
Indirect 16bit Direct 8bit
Mode 2
011 100
CS# CS#
RDU# WR#
RDL# RD#
WRU# H
WRL# H
TE AB0
P/C# AB1
Low AB[18:2]
DB0 DB0
DB1 DB1
DB[7:2] DB[7:2]
DB8 TE
DB[15:9] L
S5U13781R00C100 Reference Board User Manual
Page 7
Indirect 8bit SPI
101 111
CS# SCS#
WR# SCK
RD# H
H H
H H
TE TE
P/C# Low
Low Low
DB0 SI
DB1 SO
DB[7:2] L
L L
L L
Revision 1.0