atam894 ATMEL Corporation, atam894 Datasheet - Page 74
atam894
Manufacturer Part Number
atam894
Description
Atam894 8k-flash Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.ATAM894.pdf
(97 pages)
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ATAM894
Combination Mode 5: Bi-phase 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 a stop signal for the modulator. This is an example for a 13-bit Bi-
phase telegram.
Figure 6-53. Bi-phase Modulation
Counter 2/1
Buffer full
Timer 2
Mode 3
OMSK
MSM
SCLI
SCL
T2O
SIR
SO
SC
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
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 Bi-phase code
0
0
Counter 2/1 = Compare Register 2/1 (= 5)
0
0
0
1
2
3
4
5
0
1
4679D–4BMCU–05/05
2
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