at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 71

• Manufacturer Part Number: at85c51snd3
• Description: At85c51snd3 Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
• Manufacturer: ATMEL Corporation

Registers
7632D–MP3–01/07
Table 81. TCON Register
TCON (0.88h) – Timer/Counter Control Register
Reset Value = 0000 0000b
Number
TF1
Bit
7
7
6
5
4
3
2
1
0
Mnemonic Description
TR1
TR1
TR0
TF1
TF0
IE1
IT1
IE0
IT0
Bit
6
Timer 1 Overflow Flag
Cleared by hardware when processor vectors to interrupt routine.
Set by hardware on Timer/Counter overflow, when Timer 1 register overflows.
Timer 1 Run Control Bit
Clear to turn off Timer/Counter 1.
Set to turn on Timer/Counter 1.
Timer 0 Overflow Flag
Cleared by hardware when processor vectors to interrupt routine.
Set by hardware on Timer/Counter overflow, when Timer 0 register overflows.
Timer 0 Run Control Bit
Clear to turn off Timer/Counter 0.
Set to turn on Timer/Counter 0.
Interrupt 1 Edge Flag
Cleared by hardware when interrupt is processed if edge-triggered (see IT1).
Set by hardware when external interrupt is detected on INT1 pin.
Interrupt 1 Type Control Bit
Clear to select low level active (level triggered) for external interrupt 1 (INT1).
Set to select falling edge active (edge triggered) for external interrupt 1.
Interrupt 0 Edge Flag
Cleared by hardware when interrupt is processed if edge-triggered (see IT0).
Set by hardware when external interrupt is detected on INT0 pin.
Interrupt 0 Type Control Bit
Clear to select low level active (level triggered) for external interrupt 0 (INT0).
Set to select falling edge active (edge triggered) for external interrupt 0.
TF0
5
TR0
4
IE1
3
IT1
2
IE0
1
IT0
0
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