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Page 20 Epson Research and Development
Vancouver Design Center
S1D13705 Hardware Functional Specification
X27A-A-001-10 Issue Date: 02/02/01
5.2.2 LCD Interface
RD# I 76 CS Input
This pin has multiple functions.
• For SH-3/SH-4 mode, this pin inputs the read signal (RD#).
• For MC68K #1, this pin must be tied to IO V
DD
.
• For MC68K #2, this pin inputs the bus size bit 1 (SIZ1).
• For Generic #1, this pin inputs the read command for the
lower data byte (RD0#).
• For Generic #2, this pin inputs the read command (RD#).
See Table 5-2: “Host Bus Interface Pin Mapping,” on page 22
for
summary.
WAIT# O 2 TS2 Hi-Z
This pin has multiple functions.
• For SH-3 mode, this pin outputs the wait request signal
(WAIT#).
• For SH-4 mode, this pin outputs the device ready signal
(RDY#).
• For MC68K #1, this pin outputs the data transfer
acknowledge signal (DTACK#).
• For MC68K #2, this pin outputs the data transfer and size
acknowledge bit 1 (DSACK1#).
• For Generic #1, this pin outputs the wait signal (WAIT#).
• For Generic #2, this pin outputs the wait signal (WAIT#).
See Table 5-2: “Host Bus Interface Pin Mapping,” on page 22
for
summary.
RESET# I 73 CS 0
Active low input to set all internal registers to the default state and
to force all signals to their inactive states.
Pin Name Type Pin # Cell
RESET#
State
Description
FPDAT[7:0] O
30, 31, 32,
33, 34, 35,
36, 37
CN3 0 Panel Data
FPDAT[10:8]
O,
IO
24, 25, 26 CN3 Input
These pins have multiple functions.
• Panel Data bits [10:8] for TFT/D-TFD panels.
• General Purpose Input/Output pins GPIO[3:1].
These pins should be connected to IO V
DD
when unused.
See Table 5-3: “LCD Interface Pin Mapping,” on page 23
for
summary.
FPDAT11
O,
IO
23 CN3 Input
This pin has multiple functions.
• Panel Data bit 11 for TFT/D-TFD panels.
• General Purpose Input/Output pin GPIO4.
• Inverse Video select pin.
This pin should be connected to IO V
DD
when unused. See
Table 5-3: “LCD Interface Pin Mapping,” on page 23
for
summary.
FPFRAME O 39 CN3 0 Frame Pulse
Pin NamesTypePin #Cell
RESET#
State
Description