mc9s08rd60fj Freescale Semiconductor, Inc, mc9s08rd60fj Datasheet - Page 109

• Manufacturer Part Number: mc9s08rd60fj
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MCGEN — Modulator and Carrier Generator Enable
7.6.4 CMT Modulator Data Registers (CMTCMD1, CMTCMD2, CMTCMD3, and
CMTCMD4)
The modulator data registers control the mark and space periods of the modulator for all modes. The
contents of these registers are transferred to the modulator down counter and space period register upon
the completion of a modulation period.
Freescale Semiconductor
Setting MCGEN will initialize the carrier generator and modulator and enable all clocks. After it is
enabled, the carrier generator and modulator will function continuously. When MCGEN is cleared, the
current modulator cycle will be allowed to expire before all carrier and modulator clocks are disabled
(to save power) and the modulator output is forced low. To prevent spurious operation, the user should
initialize all data and control registers before enabling the system.
1 = Modulator and carrier generator enabled
0 = Modulator and carrier generator disabled
CMTCMD1
CMTCMD2
CMTCMD3
CMTCMD4
Reset:
Reset:
Reset:
Reset:
(CMTCMD1, CMTCMD2, CMTCMD3, and CMTCMD4)
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Figure 7-11 CMT Modulator Data Registers
MB15
SB15
MB7
Bit 7
Bit 7
Bit 7
Bit 7
SB7
MB14
SB14
MB6
SB6
6
6
6
6
MC9S08RC/RD/RE/RG
MB13
SB13
MB5
SB5
5
5
5
5
Unaffected by Reset
Unaffected by Reset
Unaffected by Reset
Unaffected by Reset
MB12
SB12
MB4
SB4
4
4
4
4
MB11
SB11
MB3
SoC Guide — MC9S08RG60/D Rev 1.10
SB3
3
3
3
3
MB10
SB10
MB2
SB2
2
2
2
2
MB9
MB1
SB9
SB1
1
1
1
1
MB8
MB0
Bit 0
Bit 0
Bit 0
SB8
Bit 0
SB0
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