S1D13704 Epson Electronics America, Inc., S1D13704 Datasheet - Page 383

• Manufacturer Part Number: S1D13704
• Description: LCD Controller
• Manufacturer: Epson Electronics America, Inc.

Epson Research and Development
Vancouver Design Center
4.3 NEC VR4102 Configuration
Interfacing to the NEC VR4102™ Microprocessor
Issue Date: 01/02/12
The NEC V
LCD controller. Physical address 0A000000h to 0AFFFFFFh (16M bytes) is reserved for
an external LCD controller.
The S1D13704 supports up to 40K bytes of display buffer memory and 32 bytes for internal
registers. Therefore, the S1D13704 will be shadowed over the entire 16M byte memory
range at 64K byte segments. The starting address of the display buffer is 0A000000h and
register 0 of the S1D13704 (REG[00h]) resides at 0A00FFE0h.
The NEC V
0B000002h. It must be set to the value of 0001h to indicate that LCD controller accesses
use a non-inverting data bus.
The 16-bit internal register named BCUCNTREG1, located at address 0B000000h, must
have bit D[13] (ISA/LCD bit) set to 0 to reserve the 16M bytes space, 0A000000h to
0AFFFFFFh, for LCD use and not as ISA bus memory space.
R
R
4102 provides the internal address decoding necessary to map to an external
4102 has a 16-bit internal register named BCUCNTREG2 located at address
X26A-G-008-05
S1D13704
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