Page 28 Epson Research and Development
Vancouver Design Center
S1D13504 Hardware Functional Specification
X19A-A-002-18 Issue Date: 01/01/30
5.4.5 CRT and External RAMDAC Interface
Table 5-5: CRT and RAMDAC Interface Pin Descriptions
Pin Name Type
Pin #
Driver Reset = 0
Value Description
F00A
F01A F02A
DACRD# IO 84 94 C/TS1 Hi-Z /
Output 11
This pin has multiple functions.
Read signal for external RAMDAC support.
General Purpose IO (GPIO4).
See Table 5-11: “LCD, CRT, RAMDAC Interfac e Pin
Mapping,” on page 33.
DACWR# IO 99 113 C/TS1 Hi-Z /
Output 11
This pin has multiple functions.
Writ e signal for external RAMDAC support.
General Purpose IO (GPIO7).
See Table 5-11: “LCD, CRT, RAMDAC Interfac e Pin
Mapping,” on page 33.
DACRS1 IO 101 115 C/TS1 Hi-Z /
Output 01
This pin has multiple functions.
Register Select bit 1 for external RAMDAC support.
General Purpose IO (GPIO9).
See Table 5-11: “LCD, CRT, RAMDAC Interfac e Pin
Mapping,” on page 33.
DACRS0 IO 100 114 C/TS1 Hi-Z /
Output 01
This pin has multiple functions.
Register Select bit 0 for external RAMDAC support.
General Purpose IO (GPIO8).
See Table 5-11: “LCD, CRT, RAMDAC Interfac e Pin
Mapping,” on page 33.
DACP0 IO 98 112 C/CN3 Hi-Z /
Output 01
This pin has multiple functions.
Pixel Data bi t 0 for external RAMDAC support.
General Purpose IO (GPIO6).
See Table 5-11: “LCD, CRT, RAMDAC Interfac e Pin
Mapping,” on page 33.