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STA027 Scheda tecnica(PDF) 21 Page - STMicroelectronics

Il numero della parte STA027
Spiegazioni elettronici  SBC CODEC
PDF  44 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA027 Scheda tecnica(HTML) 21 Page - STMicroelectronics

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STA027
5 Register description
CD00066274
21/44
5.3.7
PLL_SYSTEM_PEH_42_5 :
Address : 0xE7 (231)
Type : RW - DEC
Software Reset : 223
Description :
This register must contain a PEH value that enables the system PLL to generate a frequency of
42.5 MHz for the SYSCK.See table 4.
Default value at soft reset assume :
–
external crystal provide a CRYCK running at 14.31818 MHz
5.3.8
PLL_SYSTEM_NDIV_42_5 :
Address : 0xE8 (232)
Type : RW - DEC
Software Reset : 0
Description :
This register must contain a NDIV value that enables the system PLL to generate a frequency
of 42.5 MHz for the SYSCK.See table 4.
Default value at soft reset assume :
–
external crystal provide a CRYCK running at 14.31818 MHz
5.3.9
PLL_SYSTEM_XDIV_42_5 :
Address : 0xE9 (233)
Type : RW - DEC
Software Reset : 1
Description :
This register must contain a XDIV value that enables the system PLL to generate a frequency
of 42.5 MHz for the SYSCK.See table 4.
Default value at soft reset assume :
–
external crystal provide a CRYCK running at 14.31818 MHz
b7
b6
b5
b4
b3
b2
b1
b0
b7
b6
b5
b4
b3
b2
b1
b0
b7
b6
b5
b4
b3
b2
b1
b0



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