7
953008
Datasheet
1076—08/06/09
I
2
C Table: Frequency Select Register
Bit 7
FS Source
Frequency H/W IIC
Select
RW 0
Bit 6
SS_EN1 PLL1 Spread Enable RW 0
Bit 5
SS_EN2 PLL2 Spread Enable RW 1
Bit 4
FS4 Freq Select Bit 4 RW Latch
Bit 3
FS3 Freq Select Bit 3 RW Latch
Bit 2
FSL2 Freq Select Bit 2 RW Latch
Bit 1
FSL1 Freq Select Bit 1 RW Latch
Bit 0
FSL0 Freq Select Bit 0 RW Latch
I
2
C Table: General Device Behaviour Register
Bit 7
IREF Bit0
IREF Mulitiplier
Programming Bits
RW 0
Bit 6
SEL24_48MHz Output Select RW Latch
Bit 5
Mode 0 Output Select RW Latch
Bit 4
PCIEX PLL Cntrl PCIEX PLL Source RW 0
Bit 3
3V66/PCI PLL Cntrl
3V66/PCI PLL
Source
RW 0
Bit 2
ASYNC1
RW 0
Bit 1
ASYNC0
RW 0
Bit 0
Reserved Reserved RW 0
I
2
C Table: Output Control Register
Bit 7
REF0 Output Control RW 1
Bit 6
REF1 Output Control RW 1
Bit 5
PCICLK0 Output Control RW 1
Bit 4
PCICLK1 Output Control RW 1
Bit 3
PCICLK2 Output Control RW 1
Bit 2
PCICLK3 Output Control RW 1
Bit 1
PCICLK4 Output Control RW 1
Bit 0
PCICLK5 Output Control RW 1
I
2
C Table: Output Control Register
Bit 7
48MHz Output Control RW 1
Bit 6
24_48MHz Output Control RW 1
Bit 5
3V66_2 Output Control RW 1
Bit 4
3V66_1 Output Control RW 1
Bit 3
3V66_0 Output Control RW 1
Bit 2
PCICLK6 Output Control RW 1
Bit 1
PCICLK7 Output Control RW 1
Bit 0
PCICLK8 Output Control RW 1
Control Function Type
-
-
-
3V66/PCI Async
Freq Prog bits
-
PWD
-
Name Control Function Type 0
7 x Iref6 x Iref
48MHz
Disable
Disable
0
Name Type
PWD
1
01
Latch Inputs
OFF
Enable
-
-
PWD
PWD
-
Byte 1 Pin #
-
-
-
-
Byte 3
-
-
-
-
-
-
-
Name
-
-
-
-
-
Pin #
-
Name
-
-
-
Byte 2 Pin #
-
-
-
TypeByte 0 Pin #
-
Control Function
Control Function
OFF
IIC
ON
ON
See Table1:PLL1 Frequency Selection
Table
Sync
--
00 = PLL2 10 = 75.4/37.7
01 = 66.0/33.0
24MHz
11 = 88.0/44.0
Async
01
Enable
Disable
Disable
Disable Enable
Enable
Enable
Enable
EnableDisable
Disable
Enable
Disable Enable
Disable Enable
Disable
Disable
1
Disable
Enable
Disable
Disable Enable
PCIEXCLKT/C0 CPUCLKT/C2
Enable
Disable Enable
Disable Enable
Sync Async (PLL2)
Enable