t6020m ATMEL Corporation, t6020m Datasheet - Page 48

• Manufacturer Part Number: t6020m
• Description: Low-current Microcontroller For Watchdog Function
• Manufacturer: ATMEL Corporation

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 signal (OMSK) of the SSI is used as stop signal
for the modulator. This is an example for a 12-bit Manchester telegram:
Combination mode 5: Biphase modulation 2
SSI mode 1:
Timer 2 mode 3:
Timer 2 output mode 4:
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 via the shift-clock. The control output signal (OMSK) of the SSI is used as stop signal
for the modulator. This is an example for a 13-bit Biphase telegram:
T6020M
48 (54)
Counter 2/1
Counter 2/1
Buffer full
Buffer full
Timer 2
Mode 3
Timer 2
Mode 3
OMSK
OMSK
MSM
MSM
SCLI
SCLI
SCL
T2O
SCL
T2O
SIR
SIR
SO
SC
SO
SC
0
0
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 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
0
0
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
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 Biphase code
0
0
0
0
0
0
Counter 2/1 = Compare Register 2/1 (= 4)
Figure 53. Manchester modulation 2
Figure 54. Biphase modulation
0
0
Counter 2/1 = Compare Register 2/1 (= 5)
0
0
0
0
0
0
1
1
2
2
3
3
4
4
0
5
0
1
2
1
3
2
Rev. A3, 02-Apr-01
13837
13838