Rainbow-electronics AT83C26 Manual de usuario descargar pdf (Pagina 44)

7511B–SCR–10/05

AT83C26

Reset value = reset value depends on hardware configuration

Table 23. SC1_STATUS (Status Byte for SC1)

7 6 5 4 3 2 1 0

CC81 CC41 CARDIN1 VCARD_OK1 X VCARD_INT1 CRST1 CIO1

Bit Number Bit Mnemonic Description

7 CC81

Card CC8

This bit provides the actual level on the CC8 pin when read.

6 CC41

Card CC4

This bit provides the actual level on the CC4 pin when read.

5 CARDIN1

Card Presence Status

This bit is set when a card is detected.

It is cleared otherwise.

4 VCARD_OK1

SC1 Voltage Status

This bit is set by the DCDCA when the output voltage remains within the voltage range specified by

VCARD1[1:0] bits.

It is cleared otherwise.

3 X

2 VCARD_INT1

SC1 Smart Card voltage interrupt

This bit is set when VCARD_OK1 bit is set.

This bit is cleared when read by the micro controller.

1 CRST1

Card RST

This bit provides the actual level on the CRST pin when read.

0 CIO1

Card I/O

This bit provides the actual level on the CIO pin when read.

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 76 77

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Rainbow-electronics AT83C26 Manual de usuario Pagina 44