Chapter 19 Simple Sound Generator (SSGV1)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
661
19.3.2.3
SSG Clock Prescaler Register (SSGPS)
SSGPS is a 11 bit prescaler register. For the 32MHz input bus clock source, the frequency range of
encoding amplitude waveform is from 15.625KHz to 125KHz, so the divided clock frequency is as
.
Read: Anytime
Write: Anytime
Module Base + 0x0002
7
6
5
4
3
2
1
0
R
0
0
0
0
0
PS10
PS9
PS8
W
Reset
0
0
0
0
0
0
0
0
Figure 19-5. SSG Clock Prescaler Register (SSGPSH)
Module Base + 0x0003
7
6
5
4
3
2
1
0
R
PS7
PS6
PS5
PS4
PS3
PS2
PS1
PS0
W
Reset
0
0
0
0
0
0
0
0
Figure 19-6. SSG Clock Prescaler Register (SSGPSL)
Table 19-4. SSGPS Field Descriptions
Field
Description
10–0
PS[10:0]
SSG Clock Prescaler Register Bits —
The input clock will be divided by SSGPS+1. This divided signal will be used as tone counter clock. Also it will
decide the amplitude of the PWM cycle period.
Table 19-5. Prescaler Clock Divider
Divided Clock Frequency From
32MHz Clock Source
Divide Ratio
SSGPS[10:0]
125KHz
256
0xFF
124.514KHz
257
0x100
124.031KHz
258
0x101
123.552KHz~15.633KHz
259~2047
0x102~0x7FE
15.625KHz
2048
0x7FF
Содержание MC9S12ZVHL32
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Страница 686: ...Chapter 20 ECC Generation module SRAM_ECCV1 S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 686 Freescale Semiconductor...
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Страница 788: ...Appendix A MCU Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 788 Freescale Semiconductor...
Страница 794: ...Appendix B ADC Electricals S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 794 Freescale Semiconductor...
Страница 798: ...Appendix D IRC Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 798 Freescale Semiconductor...
Страница 802: ...Appendix F MSCAN Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 802 Freescale Semiconductor...
Страница 806: ...Appendix G NVM Electrical Parameters S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 806 Freescale Semiconductor...
Страница 810: ...Appendix H BATS Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 810 Freescale Semiconductor...
Страница 816: ...Appendix K OSC32K Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 816 Freescale Semiconductor...
Страница 822: ...Appendix L SPI Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 822 Freescale Semiconductor...
Страница 826: ...Appendix M LINPHY Electrical Specifications S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 826 Freescale Semiconductor...
Страница 829: ...Appendix O Package Information S12ZVHY S12ZVHL Family Reference Manual Rev 1 05 830 Freescale Semiconductor O 1 144 LQFP...
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