CRX14_10 Datasheet, PDF (33/47 Pages) STMicroelectronics – ISO14443 type-B contactless coupler chip with anti-collision, CRC management and anti-clone function

CRX14
Tag access using the CRX14 coupler
Figure 31. Anti-collision ST short range memory sequence (1)
S
T
A
R
T
Device
Select
Code
Slot
Marker
Register
Address
S
T
O
P
CRX14
SOF
I²C
03h
PCALL 16 TAG CRC
Command
CRC CRX14
EOF
TAG
TAG TAG TAG TAG
SOF Chip_ID CRC CRC EOF
RF
Slot 0
I²C
RF...
Slot 1
I²C
RF...
Slot 2
I²C
RF...
Slot 3
I²C
RF...
Slot 4
I²C
RF...
Slot 5
I²C
RF...
Slot 6
I²C
RF...
Slot 7
I²C
RF...
Slot 8
I²C
RF...
Slot 9
SOF
06h
04h CRC
CRX14 Slot Marker CRC
SOF Command
CRC
CRC
EOF t0 t1 SOF
<--> <-->
CRX14
TAG
EOF
SOF
Chip_ID CRC CRC EOF
TAG TAG TAG TAG
Chip_ID CRC CRC EOF
SOF
16h
CRC CRC EOF t0 t1 SOF
Chip_ID CRC CRC EOF
<--> <-->
SOF
26h
CRC CRC EOF t0 t1 SOF
Chip_ID CRC CRC EOF
<--> <-->
SOF
36h
CRC CRC EOF t0 t1 SOF
Chip_ID CRC CRC EOF
<--> <-->
SOF
46h
CRC CRC EOF t0 t1 SOF
Chip_ID CRC CRC EOF
<--> <-->
SOF
56h
CRC CRC EOF t0 t1 SOF
Chip_ID CRC CRC EOF
<--> <-->
SOF
66h
CRC CRC EOF t0 t1 SOF
Chip_ID CRC CRC EOF
<--> <-->
SOF
76h
CRC CRC EOF t0 t1 SOF
Chip_ID CRC CRC EOF
<--> <-->
SOF
86h
CRC CRC EOF t0 t1 SOF
Chip_ID CRC CRC EOF
<--> <-->
SOF
96h
CRC CRC EOF t0 t1 SOF
Chip_ID CRC CRC EOF
<--> <-->
ai09263
Doc ID 8880 Rev 4
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