Rainbow Electronics AT89C5131 - Manual (Page 95)

95
AT89C5131
4136A–USB–03/03
Table 68. IE1 Register
IE1 - Interrupt Enable Register (B1h)
Reset Value = XXXX X000b
Bit addressable
7 6 5 4 3 2 1 0
- EUSB - - - ESPI - EKB
Bit
Number
Bit
Mnemonic Description
7 - Reserved
6 EUSB USB Interrupt Enable bit
5 - Reserved
4 - Reserved
3 - Reserved
2 ESPI
SPI interrupt Enable bit
Cleared to disable SPI interrupt.
Set to enable SPI interrupt.
1 - Reserved
0 EKB
Keyboard interrupt Enable bit
Cleared to disable keyboard interrupt.
Set to enable keyboard interrupt.