AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 41

• Manufacturer Part Number: AT83C51SND1C_03
• Description: Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
• Manufacturer: ATMEL [ATMEL Corporation]

4109E–8051–06/03
Table 52. IEN1 Register
IEN1 (S:B1h) – Interrupt Enable Register 1
Reset Value = 0000 0000b
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic Description
EUSB
EMMC
EUSB
EADC
ESPI
EI2C
EKB
Bit
6
-
-
Reserved
The value read from this bit is always 0. Do not set this bit.
USB Interface Interrupt Enable Bit
Set this bit to enable USB interrupts.
Clear this bit to disable USB interrupts.
Reserved
The value read from this bit is always 0. Do not set this bit.
Keyboard Interface Interrupt Enable Bit
Set to enable Keyboard interrupt.
Clear to disable Keyboard interrupt.
A to D Converter Interrupt Enable Bit
Set to enable ADC interrupt.
Clear to disable ADC interrupt.
SPI Controller Interrupt Enable Bit
Set to enable SPI interrupt.
Clear to disable SPI interrupt.
Two Wire Controller Interrupt Enable Bit
Set to enable Two Wire interrupt.
Clear to disable Two Wire interrupt.
MMC Interface Interrupt Enable Bit
Set to enable MMC interrupt.
Clear to disable MMC interrupt.
5
-
EKB
4
EADC
3
AT8xC51SND1C
ESPI
2
EI2C
1
EMMC
0
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