Epson S1D13505F00A Technical Manual page 105

General IO Pins Configuration Register 0
REG[1Eh]
n/a n/a
Pins MA9, MA10, MA11 are multi-functional – they can be DRAM address outputs or
general purpose IO dependent on the DRAM type. MD[7:6] are used to identify the
DRAM type and configure these pins as follows:
MD[7:6] at Rising
Edge of RESET#
00
01
10
11
These bits are used to control the direction of these pins when they are used as general
purpose IO. These bits have no effect when the pins are used as DRAM address outputs.
bit 3 GPIO3 Pin IO Configuration
When this bit = 1, the GPIO3 pin is configured as an output pin.
When this bit = 0 (default), the GPIO3 pin is configured as an input pin.
bit 2 GPIO2 Pin IO Configuration
When this bit = 1, the GPIO2 pin is configured as an output pin.
When this bit = 0 (default), the GPIO2 pin is configured as an input pin.
bit 1 GPIO1 Pin IO Configuration
When this bit = 1, the GPIO1 pin is configured as an output pin.
When this bit = 0 (default), the GPIO1 pin is configured as an input pin.
General IO Pins Configuration Register 1
REG[1Fh]
n/a n/a
This register position is reserved for future use.
General IO Pins Control Register 0
REG[20h]
n/a n/a
bit 3 GPIO3 Pin IO Status
When GPIO3 is configured as an output (see REG[1Eh]), a "1" in this bit drives GPIO3
high and a "0" in this bit drives GPIO3 low.
When GPIO3 is configured as an input, a read from this bit returns the status of GPIO3.
bit 2 GPIO2 Pin IO Status
When GPIO2 is configured as an output (see REG[1Eh]), a "1" in this bit drives GPIO2
high and a "0" in this bit drives GPIO2 low.
When GPIO2 is configured as an input, a read from this bit returns the status of GPIO2.
bit 1 GPIO1 Pin IO Status
When GPIO1 is configured as an output (see REG[1Eh]), a "1" in this bit drives GPIO1
high and a "0" in this bit drives GPIO1 low.
When GPIO1 is configured as an input, a read from this bit returns the status of GPIO1.
S1D13505F00A HARDWARE FUNCTIONAL
SPECIFICATION (X23A-A-001-12)
Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from Downloaded from
n/a n/a GPIO3 Pin GPIO2 Pin
IO Config. IO Config.
Table 8-11 MA/GPIO Pin Functionality
Pin Function
MA9 MA10
GPIO3 GPIO1
MA9 GPIO1
MA9 GPIO1
MA9 MA10
n/a n/a n/a
GPIO3 Pin GPIO2 Pin
n/a n/a
IO Status IO Status
EPSON
8: REGISTERS
RO
GPIO1 Pin n/a
IO Config.
MA11
GPIO2
GPIO2
GPIO2
MA11
RW
n/a n/a n/a
RW
GPIO1 Pin
n/a
IO Status
1-93