AS3911 datasheet(90/149 Pages) AMSCO

90 / 149 page

AS3911 – 90

ams Datasheet, Confidential: 2013-Oct [2-03]

A p pl i c at io n I n f o r m at i o n

Collision Display Register

Figure 76:

Collision Display Register

Note:

At power-up and after direct commands Set Default and Clear, content of this register is set to 0.

Number of Transmitted Bytes Register 1

Figure 77:

Number of Transmitted Bytes Register 1

Note:

Default setting is set at power-up and after Set Default command.

Address 1Ch: Collision Display Register (for ISO14443A and

NFCIP-1bit rate fc/128 Rx)

Type: R

Bit

Name

Default

Function

Comments

7c_byte3

Number of full bytes before the

bit collision happened.

The Collision Display

ISO14443A anticollision

command. In case collision (or

framing error which is

interpreted as collision)

happens in a longer message,

the Collision Display

6c_byte2

5c_byte1

4c_byte0

3c_bit2

Number of bits before the

collision in the byte where the

collision happened

2c_bit1

1c_bit0

c_pb

Collision in parity bit

This is an error, reported in

case it is the first collision

detected

Address 1Dh: Number of Transmitted Bytes Register 1

Type: RW

Bit

Name

Default

Function

Comments

7ntx12

Number of full bytes to be

transmitted in one command,

MSB bits

Maximum supported number

of bytes is 8191

6ntx11

5ntx10

4ntx9

3ntx8

2ntx7

1ntx6

0ntx5

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