ATA6020N ATMEL Corporation, ATA6020N Datasheet - Page 54

• Manufacturer Part Number: ATA6020N
• Description: Low-current Microcontroller For Watchdog Function
• Manufacturer: ATMEL Corporation

54
ATA6020N
Combination Mode 3: Manchester Modulation 1
SSI mode 1:
Timer 2 mode 1, 2, 3 or 4:
Timer 2 output mode 5:
Figure 5-35. Manchester Modulation 1
Combination Mode 4: Manchester Modulation 2
SSI mode 1:
Timer 2 mode 3:
Timer 2 output mode 5:
The 4-bit stage can be used as prescaler for the SSI to generate the stop signal for modulator 2.
The SSI has a special mode to supply the prescaler with the shift-clock. The control output sig-
nal (OMSK) of the SSI is used as stop signal for the modulator.
12-bit Manchester telegram.
Figure 5-36. Manchester Modulation 2
Counter 2/1
Buffer full
Timer 2
Mode 3
OMSK
MSM
TOG2
SCLI
SCL
T2O
SIR
T2O
SO
SC
SO
SC
0
Data: 00110101
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Bit 7
Bit 7
0
0
0
0
0
0
0
0
Counter 2/1 = Compare Register 2/1 (= 4)
1
0
1
8-bit shift register internal data output (SO) to Timer 2
modulator stage
8-bit compare counter with 4-bit programmable prescaler
The Modulator 2 of Timer 2 modulates the SSI internal
data out put to Manchester code
8-bit shift register internal data output (SO) to the Timer 2
modulator stage
8-bit compare counter and 4-bit prescaler
The Modulator 2 of Timer 2 modulates the SSI data
output to Manchester code
0
1
0
1
8-bit SR-data
0
0
1
0
2
1
1
3
0
4
Figure 5-36
0
0
1
1
Bit 0
Bit 0
1
2
is an example for a
3
4708D–4BMCU–09/05