Datasheet

205
4341H–MP3–10/07
AT8xC51SND2C/MP3B
23.2 Registers
Table 23-1. AUXCON Register
AUXCON (S:90h) – Auxiliary Control Register
Reset Value = 1111 1111b
Table 23-2. KBCON Register
KBCON (S:A3h) – Keyboard Control Register
Reset Value = 0000 1111b
7 6 5 4 3 2 1 0
SDA SCL - AUDCDOUT AUDCDIN AUDCCLK AUDCCS KIN0
Bit
Number Bit Mnemonic Description
7:6
TWI Lines
Refer to TWI section.
5:1
Audio DAC Control
Refer to Audio DAC section.
0 KIN0 Keyboard Input Interrupt .
7 6 5 4 3 2 1 0
- - - KINL0 - - - KINM0
Bit Number
Bit
Mnemonic Description
7 - 5 -
Reserved
Do not set these bits.
4 KINL0
Keyboard Input Level Bit
Set to enable a high level detection on the respective KIN0 input.
Clear to enable a low level detection on the respective KIN0 input.
3 - 1 -
Reserved
Do not reset these bits.
0 KINM0
Keyboard Input Mask Bit
Set to prevent the KINF0 flag from generating a keyboard interrupt.
Clear to allow the KINF0 flag to generate a keyboard interrupt.