Table 73. IEN1 Register
IEN1 (0.B1h) – Interrupt Enable Register 1
7
6
5
4
3
2
1
0
-
-
EMMC
ENFC
ESPI
EPSI
EKB
EUSB
Bit
Bit
Number
Mnemonic Description
Reserved
7-6
5
-
The value read from these bits is always 0. Do not set these bits.
MMC/SD Interrupt Enable Bit
EMMC
ENFC
ESPI
Set to enable MMC/SD interrupt.
Clear to disable MMC/SD interrupt.
NFC Interrupt Enable Bit
4
3
2
1
0
Set to enable IDE interrupt.
Clear to disable IDE interrupt.
SPI Interrupt Enable Bit
Set to enable SPI interrupt.
Clear to disable SPI interrupt.
PSI Interrupt Enable Bit
EPSI
Set to enable PSI interrupt.
Clear to disable PSI interrupt.
KBD Interrupt Enable Bit
EKB
Set to enable Keyboard interrupt.
Clear to disable Keyboard interrupt.
USB Interrupt Enable Bit
EUSB
Set this bit to enable USB interrupt.
Clear this bit to disable USB interrupt.
Reset Value = 0000 0000b
60
AT85C51SND3Bx
7632A–MP3–03/06
ATMEL [ ATMEL ]
