STA027 ST Microelectronics, STA027 Datasheet - Page 21

• Manufacturer Part Number: STA027
• Description: SBC Codec
• Manufacturer: ST Microelectronics

STA027
5.3.7
5.3.8
5.3.9
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 :
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 :
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 :
b7
–
b7
–
b7
–
external crystal provide a CRYCK running at 14.31818 MHz
external crystal provide a CRYCK running at 14.31818 MHz
external crystal provide a CRYCK running at 14.31818 MHz
b6
b6
b6
b5
b5
b5
CD00066274
b4
b4
b4
b3
b3
b3
b2
b2
b2
5 Register description
b1
b1
b1
b0
b0
b0
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