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參數(shù)資料
| 型號： | ATA555814M01-PP |
| 廠商： | Atmel Corp. |
| 英文描述： | 1 kbit R/W IDIC with Deterministic Anticollision |
| 中文描述： | 1千比特讀/寫的確定性防撞投資業(yè)務 |
| 文件頁數(shù)： | 3/42頁 |
| 文件大?。?/td> | 557K |
| 代理商： | ATA555814M01-PP |
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3
4681C–RFID–09/05
ATA5558 [Preliminary]
2.2
Power-On Reset (POR) and Initialization
The Power-On-Reset circuit (POR) maintains the circuit in a reset state until an adequate inter-
nal operating voltage threshold level has been reached, whereupon a default start-up delay
sequence is started. During this period of 200 field clock cycles, the configuration and security
setup is initialized from the System Configuration and Page Security blocks.
2.3
Control Logic
The control logic is responsible for the following functions:
Initialization and reloading of the configuration from EEPROM
Control of read and write memory access operations
Data transmission and command decoding
CRC check, error detection and error handling
2.4
Modulator
The modulator output circuitry controls the switching of a resistive load between the Coil 1 and
Coil 2 pads to transmit data from the tag to the interrogator (uplink). The ASK load modulator is
driven from the Manchester, Bi-phase encoder or directly from the EEPROM memory data
stream (NRZ) according to the uplink encoding configuration.
Table 2-1.
Uplink Mode
Figure 2-1.
Manchester Timing Diagram
Types of Modulation
Manchester Encoding
0
= falling edge on mid bit
1
= rising edge on mid bit
1. Since Bi-phase encoding is data dependent the following definitions apply to the ATA5558
implementation.
- The tag modulates the first (half) bit period after SOF.
- If the last bit of a data stream is a logical
1
it is possible that this bit period is non-modu-
lated and therefore is not detectable directly by the reader.
Bi-phase Encoding
(1)
0
= rising or falling edge
1
= no edge on mid bit
NRZ – Direct Data
1
= modulation off
0
= modulation on
ASK-coded
modulation
Note:
1
Data rate = F
RF
/16
0
0
1
NRZ data stream
Manchester coded
RF field
Manchester
coded Modulator
signal
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| ATA555814-PAE | 1 kbit R/W IDIC with Deterministic Anticollision |
| ATA555814-PP | 1 kbit R/W IDIC with Deterministic Anticollision |
| ATA555815-DDT | 1 kbit R/W IDIC with Deterministic Anticollision |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ATA555814-PAE | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:1 kbit R/W IDIC with Deterministic Anticollision |
| ATA555814-PP | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:1 kbit R/W IDIC with Deterministic Anticollision |
| ATA555815C-PP | 功能描述:外圍驅動器與原件 - PCI ATA555815C-PP Transponder RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| ATA555815-DDT | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:1 kbit R/W IDIC with Deterministic Anticollision |
| ATA555815-DDW | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:1 kbit R/W IDIC with Deterministic Anticollision |
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