CR14_10 STMICROELECTRONICS [STMicroelectronics], CR14_10 Datasheet - Page 25
![no-image](/images/no-image-200.jpg)
CR14_10
Manufacturer Part Number
CR14_10
Description
ISO14443 type-B contactless coupler chip with anti-collision and CRC management
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.CR14_10.pdf
(47 pages)
- Current page: 25 of 47
- Download datasheet (407Kb)
CR14
Figure 18. CR14-to-host transfer: I²C current address read from slot marker register
5.4
Addresses above location 06h
In I²C Write mode, when the CR14 receives the 8-bit register address, and the address is
above location 06h, the device does not acknowledge (NoACK) and deselects itself from the
bus. The Serial Data line, SDA, stays at logic ‘1’ (pull-up resistor), and the I²C Host receives
a NoACK during the 9th bit time. The SDA line stays High until the STOP condition is issued.
In the I²C Current and Random Address Read modes, when the CR14 receives the 8-bit
register address, and the address is above location 06h, the device does not acknowledge
the Device Select Code after the START condition, and deselects itself from the bus.
CR14 Read
Bus Master
Bus Slave
S
T
A
R
T
1 0 1 0 X X X
Device Select
Code
Doc ID 11922 Rev 2
R/W
ACK
Applying the I²C protocol to the CR14 registers
FFh
NoACK
S
T
O
P
ai12047
25/47
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