參數(shù)資料
型號: SL28506BZIT
廠商: SILICON LABORATORIES
元件分類: 時鐘產(chǎn)生/分配
英文描述: 400 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO64
封裝: 6 X 17 MM, HALOGEN FREE AND ROHS COMPLIANT, MO-153EF, TSSOP-64
文件頁數(shù): 25/28頁
文件大?。?/td> 261K
代理商: SL28506BZIT
SL28506
.........................DOC #: SP-AP-0021 (Rev AA) Page 6 of 28
Control Registers
Byte 0: Control Register 0
Bit
@Pup
Name
Description
7
HW
FS_C
CPU Frequency Select Bit, set by HW
6
HW
FS_B
CPU Frequency Select Bit, set by HW
5
HW
FS_A
CPU Frequency Select Bit, set by HW
4
0
iAMT_EN
Set via SMBus or by combination of PWRDWN, CPU_STP, and PCI_STP
0 = Legacy Mode, 1 = iAMT Enabled, Sticky 1
3
0
RESERVED
2
0
SRC_MAIN_SEL
Select source for SRC clock,
0 = SRC_MAIN = PLL1, PLL3_CFB Table applies
1 = SRC_MAIN = PLL3, PLL3_CFB Table does not apply
1
0
SATA_SEL
Select source of SATA clock
0 = SATA SRC_MAIN, 1= SATA PLL2
0
1
PD_Restore
Save Config. In powerdown
0 = Config. Cleared, 1 = Config. Saved
Byte 1: Control Register 1
Bit
@Pup
Name
Description
7
0
SRC0_SEL
Select for SRC0 or DOT96, 0 = SRC0, 1 = DOT96
6
0
PLL1_SS_DC
Select for down or center SS,
0 = Down spread, 1 = Center spread
5
0
PLL3_SS_DC
Select for down or center SS,
0 = Down spread, 1 = Center spread
4
0
PLL3_CFB3
Bit 4:1 only apply when SRC_SEL=0
0000 = PLL3 Disable Default
PLL3 OFF, SRC1 = SRC_MAIN
0001 = 100 MHz 0.5% SSC Stby
PLL3 ON, SRC1 = SRC_MAIN
0010 = 100 MHz 0.5% SSC
Only SRC1 sourced from PLL3
0011 = 100 MHz 1.0% SSC
Only SRC1 sourced from PLL3
0100 = 100 MHz 1.5% SSC
Only SRC1 sourced from PLL3
0101 = 100 MHz 2.0% SSC
Only SRC1 sourced from PLL3
0110 = RESERVED
Note: SE clocks required to be
0111 = RESERVED
enabled through Byte 8 Bit[1:0]
1000 = 1394A(24.576M) on SE1 and SE2
1001 = 1394A(24.576M) on SE1 and 1394B (98.304M) on SE2
1010 = 1394B on SE1 and SE2
1011 = 27MHz_NSS on SE1 and SE2
1100 = 25MHz on SE1 and SE2
1101 = 25MHz on SE1 and SE2 Disabled (set whenPCI3/CFB0 is set high to
config to HW mode 3)
1110 = RESERVED
1111 = RESERVED
3
0
PLL3_CFB2
2
0
PLL3_CFB1
1
PLL3_CFB0
0
1
PCI_SEL
Select PCI Clock source from PLL1 or SRC_MAIN
0 = PLL1, 1 = SRC_MAIN
Byte 2: Control Register 2
Bit
@Pup
Name
Description
7
1
REF_OE
Output enable for REF
0 = Output Disabled, 1 = Output Enabled
6
1
USB_OE
Output enable for USB
0 = Output Disabled, 1 = Output Enabled
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