AS3911 datasheet(84/159 Pages) AMSCO

номер детали	AS3911

подробное описание детали	NFC Initiator / HF Reader IC

PDF	159 Pages

Scroll/Zoom	100%

производитель	AMSCO [ams AG]

домашняя страница	http://www.ams.com

Logo

84 / 159 page

Page 84

ams Datasheet

Document Feedback

[v2-11] 2016-Jun-13

AS3911 − Application Information

Mask Receive Timer Register

Figure 64:

Mask Receive Timer Register

Note(s):

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

2. In NFCIP-1 bit rate detection mode, the clock of the Mask Receive timer is additionally divided by eight (one count is 512/fc) to

cover range up to ~9.6 ms.

Address 0Eh: Mask Receive Timer Register

Type: RW

Bit

Name

Default

Function

Comments

7mrt7

Defined in steps of 64/fc (4.72 μs).

Range from 256/fc (~18.88 μs) to

16320/fc (~1.2 ms)

Timeout = mrt<7:0> * 64/fc

Timeout (0 ≤ mrt<7:0> ≤ 4) = 4 *

64/fc (18.88 μs)

In NFCIP-1 bit rate detection mode

one step is 512/fc (37.78 μs)

Defines time after end of Tx during

which receiver output is masked

(ignored).

For the case of ISO14443A 106 kbit/s

the Mask Receive Timer is defined

according to PCD to PICC frame delay

time definition, where mrt<7:0>

define number of n/2 steps.

Minimum mask receive time of 18.88

μs covers the transients in receiver

after end of transmission.

6mrt6

5mrt5

4mrt4

3mrt3

2mrt2

1mrt1

0mrt0

AS3911 датащи(PDF) 84 Page - ams AG

AS3911 датащи(HTML) 84 Page - ams AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL