EVB-B1+ WIZnet, EVB-B1+ Datasheet - Page 109

• 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

4.2.4.
PAL is used to make enable signal of various chip or module that are used for EVB B/D. The PAL element
that is used in the product is ATF16V8B-15PL from ATMEL co. It uses 10 input pins and 8 I/O Pins.
It makes Chip Select or Enable Signal about SRAM(/CS_RAM), LCD(LCD_E), and W3150A
The output, PAL_OUT_0~PAL_OUT_4, are set aside for expansion through Expanded Interface.
4.2.5.
SRAM, with the size of 32Kbytes, is used as external data memory of Atmega128.
4.2.6.
It’s a interface for Dual Serial USARTs that is supported by Atmega128.
EVB B/D uses 9Pin DSUB male Type(P1,P2) connector.
4.2.7.
Expanded board interface is designed to be developed easily using EVB B/D. Most of the port pin of
Atmega128, output sinal of PAL (PAL_OUT_0~PAL_OUT_4), power and many reserved pin are connected to
Expanded Board Interface.
The Signals of Atmega128 that are not connected to Expanded Board Interface are 7 RXD1(PD2),
TXD1(PD3), RXD0(PE0), TXD0(PE1), LED0(PG3), LED1(PG4), /I2CHIP_IRQ(PE4).
Bus Interface
66,34,67,35,
68,36,69,37,
70,38,71,39,
73,40,74,41
77,45,78,46
79,47,80,48
53
86
25
~
29
18
Pin #
PAL
SRAM
RS232 Port
Expanded Board Interface
A0, A1, A2, A3,
A4, A5, A6, A7,
A8, A9, A10,A11
A12,A13,A14,A15
D0, D1, D2, D3,
D4, D5, D6, D7
/RD
/WR
PAL_OUT_0
~
PAL_OUT_4
SDA/PD0
<Table 4-4: Expanded Board Interface Pin Description>
© Copyright 2006 WIZnet Co., Inc. All rights reserved.
Pin Name
O
I/O
O
O
I/O
Dir.
Parallel Address Bus[0:15]
Parallel Data Bus[0:7]
Parallel Bus Read Strobe
Parallel Bus Write Strobe
Reserved Parallel Bus Chip Select / Enable
I2C Bus Data Line/ Port D0
Description
+
(/CS_IINCHIP).
99