ICS950813 Datasheet, PDF (8/22 Pages) Integrated Circuit Systems – Frequency Generator with 200MHz Differential CPU Clocks

ICS950813
Advance Information
BYTE
7
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin #
X
X
X
X
X
X
X
X
Affected Pin
Name
(Reserved)
AEN
AFS1
AFS0
(Reserved)
(Reserved)
(Reserved)
(Reserved)
Control Function
(Reserved)
3V66/PCI Freq Source Select
Async Freq select bit 1
Async Freq select bit 0
(Reserved)
(Reserved)
(Reserved)
(Reserved)
Type
RW
RW
RW
RW
RW
RW
RW
RW
Bit Control
0
1
-
-
Fix_PLL CPU_PLL
Async Sync
See Async Freq
Selection Table
-
-
-
-
-
-
-
-
PWD
1
1
0
0
1
1
1
1
BYTE
8
Bit 7
Pin #
X
Affected Pin
Name
-
Control Function
(Reserved)
Type
X
Bit Control
0
1
-
-
PWD
0
Bit 6
X
-
Bit 5
X
-
Bit 4
X
-
Bit 3
X
-
Bit 2
X
-
Bit 1
X
-
(Reserved)
(Reserved)
(Reserved)
Readback Byte Count
X
-
X
-
X
-
R
-
R
-
R
-
-
0
-
0
-
0
-
1
-
1
-
1
Bit 0
X
-
R
-
-
1
Note: Byte 8 is for ICS test only. Do not write as system damage may occur. Bit(2:0) contain the readback Byte count.
BYTE
9
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin #
35
Affected Pin
Name
VCHCLK Slew Control
7, 6, 5
13, 12,
11, 10
18, 17, 16
PCICLK_F (2:0) Slew Contol
PCICLK (3:0) Slew Contol
PCICLK (6:4) Slew Contol
Control Function
00 = High(default), 01 = Low,
11,10 = Medium
00 (default), 11 = Medium
01 = Low, 10 =High
00 (default), 11 = Medium
10 = Low, 01 =High
00 (default), 11 = Medium
10 = Low, 01 =High
Type
RW
RW
RW
RW
RW
RW
RW
RW
Bit Control
0
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PWD
0
0
0
0
0
0
0
0
BYTE
10
Bit 7
Pin #
X
Affected Pin
Name
-
Control Function
M/N Enable (Enable access to
Byte 11 - 14)
Bit 6
X
-
Unused
Bit 5
X
Bit 4
X
3V66 (5:2) Skew
Approx 250ps per bit (Ref to PCI)
Bit 3
X
-
Unused
Bit 2
X
-
Unused
Bit 1
X
-
Unused
Bit 0
X
-
Unused
Note: See table 8 for Byte 11-14 default information
Type
RW
-
RW
RW
-
-
-
-
Bit Control
0
HW/B0
-
1
Byte
(11-14)
-
-
-
-
-
-
-
-
-
-
-
-
-
PWD
0
0
0
0
1
0
1
0
0708—10/10/02
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