at85c51snd3b ATMEL Corporation, at85c51snd3b Datasheet - Page 36

• Manufacturer Part Number: at85c51snd3b
• Description: Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
• Manufacturer: ATMEL Corporation

36
AT85C51SND3B
Table 33. CKSEL Register
CKSEL (0.BAh) – Clock Selection Register
Reset Value = 0000 0000b
Table 34. PLLCLK Register
PLLCLK (0.BCh) – PLL Clock Control Register
Reset Value = 0000 0000b
Table 35. MMCCLK Register
MMCCLK (0.BDh) – MMC Clock Control Register
Reset Value = 0000 0000b
MMCCKS2
DNFCKS2
Number
Number
Number
PLLR3
7-5
4-3
1-0
7-4
3-0
7-5
4-0
Bit
Bit
Bit
7
2
7
7
MMCCKS2:0
DNFCKS2:0
SYSCKS1:0
MMCDIV4:0
PLLCKS1:0
MMCCKS1
Mnemonic Description
Mnemonic Description
Mnemonic Description
DNFCKS1
PLLR3:0
PLLN3:0
SIOCKS
PLLR2
Bit
Bit
Bit
6
6
6
DFC/NFC Clock Select Bits
Refer to Table 27 for information on selected clock value.
PLL Reverse Clock Select Bits
Refer to Table 24 for information on selected clock value.
SIO Clock Select Bit
Refer to Table 30 for information on divided clock value.
System Clock Select Bits
Refer to Table 26 for information on divided clock value.
PLL R Divider Bits
4-bit R divider, R from 1 (PLLR3:0 = 0000) to 16 (PLLR3:0 = 1111).
PLL N Divider Bits
4-bit N divider, N from 1 (PLLN3:0 = 0000) to 16 (PLLN3:0 = 1111).
MMC Clock Select Bits
Refer to Table 28 for information on selected clock value.
MMC Clock Divider Bits
Refer to Table 29 for information on divided clock value.
MMCCKS0
DFCCKS0
PLLR1
5
5
5
MMCDIV4
PLLCKS1
PLLR0
4
4
4
MMCDIV3
PLLCKS0
PLLN3
3
3
3
MMCDIV2
SIOCKS
PLLN2
2
2
2
SYSCKS1
MMCDIV1
PLLN1
1
1
1
7632C–MP3–11/06
SYSCKS0
MMCDIV0
PLLN0
0
0
0