AS3909 datasheet(37/77 Pages) AMSCO

37 / 77 page

ams Datasheet, Confidential: 2013-Oct [3-02]

AS3909/AS3910 – 37

Appl icatio n I n f o rm a t i o n

Figure 25:

Configuration Register 3

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

Address # 03: Configuration Register 3

(ISO-14443A and NFC)

Type: RW

Bit

Name

Def.

Function

Comments

7crc_rx

→ receive without CRC

For ISO-14443A

anticollision.

Valid only for ISO14443A

mode, receive without

CRC is not supported in

ISO14443B mode.

6no_par

→ no byte parity checking

When set to 1 parity bits

are still detected and

removed before received

data is put in FIFO, but

there is no check for their

correctness.

5p_len3

p_len3

p_len2

p_len1

p_len0

reduction

Modulation pulse

reduction,

Defined in number of

13.56 MHz clock periods.

p_len2

3p_len1

74ns

2p_len0

1106ns

Not used

AS3909 数据表(PDF) 37 Page - ams AG

AS3909 数据表(HTML) 37 Page - ams AG

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