EVB-B1+ WIZnet, EVB-B1+ Datasheet - Page 114

• Manufacturer Part Number: EVB-B1+
• Description: Development Boards & Kits - ARM W3150A+EVAL BOARD BASED ON AVR
• Manufacturer: WIZnet

Specifications of EVB-B1+

• Rohs: yes
• Product: Evaluation Boards
• Interface Type: RS-232, SPI
• Operating Supply Voltage: 3.3 V, 5 V
• Data Bus Width: 8 bit
• Dimensions: 50 mm x 40 mm
• Processor Series: ATmega128

4.4.2.
External SRAM area is ranged from 0x0000 to 0x7fff.
The following is a VHDL Source Code that makes SRAM CS.
The following is a CUPL Source Code that makes SRAM CS.
4.4.3.
LCD is ranged 0x9000 ~ 0x9400.
WR and RD Signal are used together to control the timing.
/* *************** INPUT PINS *********************/
PIN
PIN
PIN
/* *************** OUTPUT PINS *********************/
PIN
PIN
PIN
/* < 0x8000 */
!nCS_RAM = !A15;
--nRAMCS (0x0000 - 0x7fff) :
process(Addr)
begin
end process;
if (Addr < "100000") then
nRAMCS <= '0';
nRAMCS <= '1';
[1..6] = [A10..15]; /* address upper 6bits
7 = nRD;
8 = nWR;
12 = nCS_RAM; /* External SRAM CS
13 = LCD_E;
14 = nCS_IINCHIP;
else
end if;
External SRAM Area
LCD Area
© Copyright 2006 WIZnet Co., Inc. All rights reserved.
/* read signal
/* write signal
/* LCD CS
/* iinChip CS
*/
*/
*/
*/
*/
*/
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