atam894 ATMEL Corporation, atam894 Datasheet - Page 55

• Manufacturer Part Number: atam894
• Description: Atam894 8k-flash Microcontroller
• Manufacturer: ATMEL Corporation

6.3.3.5
6.3.3.6
6.3.3.7
4679D–4BMCU–05/05
Timer 3 Demodulator for Bi-phase, Manchester and Pulse-width-modulated Signals
Timer 3 Registers
Timer 3 Mode Register (T3M)
The demodulator stage of Timer 3 can be used to decode Bi-phase, Manchester and
puls-width-coded signals
Figure 6-37. Timer 3 Demodulator 3
Table 6-13.
T3M3
T3M2
T3M1
T3M0
Mode
T3M3
1
2
3
4
5
6
7
8
9
Bit 3
T3M3
1
1
1
1
1
1
1
1
0
Timer 3 Mode Select Bits
Timer 3 Mode select bit 3
Timer 3 Mode select bit 2
Timer 3 Mode select bit 1
Timer 3 Mode select bit 0
T3M2
Bit 2
T3M2
1
1
1
1
0
0
0
0
1
T3M1
Bit 1
T3I
T3M1
1
1
0
0
1
1
0
0
1
T3M0
T3M0
1
0
1
0
1
0
1
0
1
Bit 0
T3EX
Timer 3 Modes
Timer/counter with a read access
Timer/counter, external capture and external trigger
restart mode (T3I)
Timer/counter, internal capture and internal trigger
restart mode (TOG2)
Timer/counter mode 1 without output (T2O -> T3O)
Timer/counter mode 2 without output (T2O -> T3O)
Burst modulation with Timer 2 (M2)
Burst modulation with shift register (SO)
FSK modulation with shift register (SO)
Pulse-width modulation with shift register (SO) and
Timer 2 (TOG2), internal trigger restart (SCO) ->
counter reset
CM31
Demodulator 3
Counter 3
Control
T3M
Address: 'B'hex — Subaddress: '0'hex
Counter 3
Reset
Res
SCI
SI
Reset value: 1111b
ATAM894
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