Rainbow-electronics AT89C5122 Manual do Utilizador descarregar pdf (Página 163)

163

AT8xC5122/23

4202E–SCR–06/06

Reset Value = X0XX 00X0b (Bit addressable)

Table 99. Interrupt Enable Register 1 - IEN1 (B1h) for AT8xC5122

76543210

- EUSB - - ESCI ESPI - EKB

Bit

Number

Bit

Mnemonic Description

Reserved

The value read from this bit is indeterminate. Do not change this bit.

6EUSB

USB Interrupt Enable bit

Cleared to disable USB interrupt .

Set to enable USB interrupt.

5 - 4 -

Reserved

The value read from this bit is indeterminate. Do not change these bits.

3 ESCI

SCI interrupt Enable bit

Cleared to disable SCIinterrupt .

Set to enable SCI interrupt.

2 ESPI

SPI interrupt Enable bit

Cleared to disable SPI interrupt .

Set to enable SPI interrupt.

Reserved

The value read from this bit is indeterminate. Do not change this bit.

0 EKB

Keyboard interrupt Enable bit

Cleared to disable keyboard interrupt .

Set to enable keyboard interrupt.

1 2 ... 158 159 160 161 162 163 164 165 166 167 168 ... 212 213

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