AS3911 datasheet(70/149 Pages) AMSCO

70 / 149 page

AS3911 – 70

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

ISO14443B Settings Register 1

Figure 50:

ISO14443B Settings Register

Note(s) and/or Footnote(s):

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

2. Start/stop bit omission for Tx can be implemented by using Stream mode.

Address 06h: ISO14443B Settings Register 1

Type: RW

Bit

Name

Default

Function

Comments

7egt2

egt2

egt1

egt0

Number

of EGT

EGT time defined in number of

etu

6egt1

5egt0

sof_0

→ 10 etu, 1 → 11 etu

SOF, number of etu with logic 0

(10 or 11)

sof_1

→ 2 etu, 1 → 3 etu

SOF, number of etu with logic 1

(2 or 3)

2eof

→ 10 etu, 1 → 11 etu

EOF, number of etu with logic 0

(10 or 11)

1half

1: SOF 10.5, 2.5, EOF: 10.5

Sets SOF and EOF settings in

middle of specification

rx_st_om

1: Start/stop bit omission for Rx

SOF= fixed to 10 low - 2 high,

EOF not defined, put in FIFO

last full byte (2)

AS3911 Datasheet(PDF) 70 Page - ams AG

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