SRIX4KA3T1GE STMicroelectronics, SRIX4KA3T1GE Datasheet - Page 12

• Manufacturer Part Number: SRIX4KA3T1GE
• Manufacturer: STMicroelectronics

Specifications of SRIX4KA3T1GE

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

Data transfer
3.2.3
3.3
Figure 10. Example of a complete transmission frame
12/50
Sent by the
Sent by the
SRIX4K
Reader
Answer end of frame
The EOF shown in
Figure 9.
Transmission frame
Between the Request data transfer and the Answer data transfer, all ASK and BPSK
modulations are suspended for a minimum time of t
to switch from Transmission to Reception mode. It is repeated after each frame. After t
13.56 MHz carrier frequency is modulated by the SRIX4K at 847 kHz for a period of
t
by the SRIX4K forms the start bit (‘0’) of the Answer SOF. After the falling edge of the
Answer EOF, the reader waits a minimum time, t
the SRIX4K.
1
= 128/ƒ
SOF
at 106kb/s
12 bits
–
–
ETU
followed by 10 ETUs at logic-0,
followed by 2 ETUs at logic-1.
S
Cmd
Input data transfer using ASK
10 bits
to allow the reader to synchronize. After t
0
Answer end of frame
b0
Data
10 bits
t
DR
0
b1
Figure 9
CRC
10 bits
0
b2
CRC
10 bits
is composed of:
0
b3
EOF
10 bits
b4
0
128/fs
t
0
0
b5
f s =847.5kHz
Sync
128/fs
2
t
1
, before sending a new Request Frame to
0
b6
Output data transfer using BPSK
0
1
= 128/ƒ
SOF
, the first phase transition generated
12 bits
0
b7
Data CRC CRC
10 bits
S
. This delay allows the reader
0
b8
10 bits
0
b9
10 bits
EOF
t
12 bits
1
b10
2
AI05731
ai07665
1
b11
SOF
SRIX4K
0
, the