AT90SCR100 datasheet(190/433 Pages) ATMEL

190 / 433 page

190

TPR0327AY–SMS–30Jan09

AT90SCR100

Figure 15-13.

Character Reception Diagram

15.6.4

SCIB Reset

The SCICR register contains a reset bit. If set, this bit generates a reset of the SCIB and its reg-

isters. All default values will be set into the SCIB registers.

15.7

Smart Card Interface Block Registers

15.7.1

SCICR - Smart Card Interface Control Register

• Bit 7 – SCIRESET: Smart Card Interface Reset Bit

Set this bit to reset and deactivate the Smart Card interface. This bit acts as an active high soft-

ware reset.

Clear this bit to activate the Smart Card interface. The read back value becomes 0 only when

the card interface is completely activated and ready.

• Bit 6 – CARDDET: Card Presence Detector Sense

Clear this bit to indicate the card presence detector is open when no card is inserted (CPRES is

high and will go low when a card is inserted).

SCTBE

SCRC

SCPE

SCTBI

SCRI

Shift Register

SCISR Register

SCIIR Register

SCIBUF

SCPI

Received

Character

I/O Pin

SCIER.ESCRI

Bit

321

$0000FF

SCIRESET CARDDET

VCARD [1..0]

UART

WTEN

CREP

CONV

SCICR

Read/write

R/W

Initial value

0x00

When clearing this bit by software, it is required to wait till this bit is cleared before

using the interface.

Note

AT90SCR100 Datasheet(PDF) 190 Page - ATMEL Corporation

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