LRI2K datasheet(23/89 Pages) STMICROELECTRONICS

Part #	LRI2K

Description	13.56 MHz, 2048-bit EEPROM tag IC with 64-bit UID and kill code, ISO 15693 and ISO 18000-3 Mode 1 compliant

PDF	89 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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23 / 89 page

LRI2K

LRI2K to VCD frames

23/89

LRI2K to VCD frames

Frames are delimited by an SOF and an EOF. They are implemented using code violation.

Unused options are reserved for future use. For the low data rate, the same subcarrier

frequency or frequencies is/are used. In this case the number of pulses is multiplied by 4.

For the Fast commands using one subcarrier, all pulse numbers and times are divided by 2.

6.1

SOF when using one subcarrier

6.1.1

High data rate

The SOF includes an unmodulated time of 56.64 µs followed by 24 pulses at 423.75 kHz

(fC/32), and a logic 1 that consists of an unmodulated time of 18.88 µs followed by 8 pulses

at 423.75 kHz. The SOF is shown in Figure 24.

Figure 24.

Start of frame, High data rate, one subcarrier

For the Fast commands, the SOF comprises an unmodulated time of 28.32 µs, followed by

12 pulses at 423.75 kHz (fC/32), and a logic 1 that consists of an unmodulated time of

9.44 µs followed by 4 pulses at 423.75 kHz as shown in Figure 25.

Figure 25.

Start of frame, High data rate, one subcarrier x2

113.28µs

ai12078

37.76µs

56.64µs

ai12079

18.88µs

LRI2K Datasheet(PDF) 23 Page - STMicroelectronics