ATA559001-DDT Atmel, ATA559001-DDT Datasheet - Page 73
ATA559001-DDT
Manufacturer Part Number
ATA559001-DDT
Description
RF Wireless Misc UHF (1kbit r/w anti-collision)
Manufacturer
Atmel
Datasheet
1.ATA559001-6DSY.pdf
(107 pages)
- Current page: 73 of 107
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10.3.2
4817C–RFID–03/07
Read128 and Read128c
The read128 command can read the full page of the memory. Read128c addresses a page in
the control memory. Short, long, and symbolic addressing modes are supported. After receiving
the header, the command, the parameters, and, optionally, the address field, the tag expects the
CRC stream (inverted CRC), and then the two EOF symbols.
After getting the two EOF symbols the tag expects the return header. Then the tag transfers the
status2 register and the 128-bit + 16-bit CRC data back.
After transmitting the last bit, the tag expects the two EOF symbols. If it does not receive them, it
assumes that the reader is transmitting a new header. The tag enters the loop status.
The command byte is
Table 10-4.
Table 10-5.
When using long addressing modes, the page address is stored at address(2:0). The other bits
of the address field shall be set to “0”.
The start address of the block is stored at parameter(4:3). Parameter(5) shall be set to “0”.
Short Read
User Memory
Short Read
Control Memory
Long Read
User Memory
Long Read
Control Memory
• 30h (read128)
• 98h (read128c), and includes the 2-bit command CRC
Index
7:6
5:3
2:1
0
Construction of the Forward Link for prog4byte Commands
Parameter Field of the Read Commands
Function
Addressing mode
- Short address (short addressing modes)
- (4:3) start block (long addressing mode); index(5) shall be set to “0”
Return link modulation
Select
Header
Header
Header
Header
Command
Command
Command
Command
Parameter
Parameter
Parameter
Parameter
CRC
CRC
Address
Address
EOT
EOT
CRC
CRC
ATA5590
EOT
EOT
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