W7100A WIZnet, W7100A Datasheet - Page 110

• Manufacturer Part Number: W7100A
• Description: 8-bit Microcontrollers - MCU 8051 CORE+HARDWIRED TCP/IP+MAC+PHY
• Manufacturer: WIZnet

Specifications of W7100A

• Rohs: yes
• Core: 8051
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 25 MHz
• Program Memory Size: 255 B
• Data Ram Size: 64 KB
• On-chip Adc: No
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 80 C
• Package / Case: LQFP-100
• Mounting Style: SMD/SMT
• Interface Type: UART
• Program Memory Type: Flash

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4) If user uses TCPIP Core interrupt, the INTLEVEL register must be set to the value more than
0x2B00
① Calculation formula of timer1
② Calculation formula of timer2
 STEP 2 : Setting Network Information
1. Basic network information setting for communication:
Ex) Set the INTLEVEL register to 0x2B00
IINCHIP_WRITE (INTLEVEL0, 0x2B);
IINCHIP_WRITE (INTLEVEL0 + 1,
ET1= 0;
TMOD = 0x20;
PCON |= 0x80;
TH1 = 0xFC;
TR1 = 1;
SCON = 0x50;
ES = 0;
RI = 0;
TI = 0;
timer of W7100A refers to the section 6.6 ‘Examples of Baud Rate Setting’.
The calculation of baud rate for the timer is as below
Ex) Using timer mode2, SMOD = 1, Clock speed = 88.4736MHz, Baud rate = 115200.
It must be set the basic network information.
① SHAR(Source Hardware Address Register)
② GAR(Gateway Address Register)
③ SUBR(Subnet Mask Register)
④ SIPR(Source IP Address Register)
because of internal TCPIP Core interrupt routine.
It is prescribed that the source hardware addresses, which is set by SHAR, use
unique hardware addresses (Ethernet MAC address) in the Ethernet MAC layer. The
IEEE manages the MAC address allocation. The manufacturer which produces the
network device allocates the MAC address to product.
Details on MAC address allocation refer to the website as below.
U
http://www.ieee.org/
TH1 = 256 – ((K * 88.4736MHz) / (384 * baud rate))
(RCAP2H, RCAP2L) = 65536 – (88.4736MHz / (32 * baud rate))
K = ‘1’ at SMOD = ‘0’, K = ‘2’ at SMOD = ‘1’
// Receive interrupt disable
// Transmit interrupt disable
// Serial MODE1, REN = 1, TI = 0, RI = 0
// SMOD = 1
// Serial interrupt disable
// TIMER MODE2
// Start the TIMER1
// Timer1 INT disable
// x2 115200(SMOD = 1) at 88.4736MHz
U
,
U
http://standards.ieee.org/regauth/oui/index.shtml
0x00);//write low byte of INTLEVEL TCPIPCore register
//write high byte of INTLEVEL TCPIPCore register
Ver. 1.12
U
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