ics9248-99 Integrated Device Technology, ics9248-99 Datasheet - Page 4

• Manufacturer Part Number: ics9248-99
• Description: Frequency Generator & Integrated Buffers For Celeron & Pii/iii
• Manufacturer: Integrated Device Technology

Serial Configuration Command Bitmap
Byte4: Functionality and Frequency Select Register (default = 0)
I
0314C—09/18/03
Note 1: Default at power-up will be for latched logic inputs to define frequency, as displayed by
2
ICS9248-99
B
C is a trademark of Philips Corporation
B
B
B
B
t i
B
t i
t i
t i
t i
t i
7
, 2
3
0
1
4 :
Bit 3.
1) The IOAPIC Frequency change from IOAPIC=PCICLK/2 to IOAPIC=PCICLK is controlled by
2) The I
1
1
- 1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
-
-
IOAPC_Freq control in I
-
-
-
T
F
S
F
N
R
s i r
e r
p
e r
n u
r o
e r
2
a t
u q
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
u q
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
C readback of the power up default indicate the revision ID in bits 2, 7:4
m
i B
i n
d a
e t
n e
n e
l a
g n
( t
l l a
S
y c
y c
, 2
0
0
0
0
0
0
0
0
e p
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
o
s i
: 7
s i
t c
t u
) 4
u r
e s
e s
u p
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
m
e l
e l
s t
t c
t c
E
d e
d e
a n
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
l b
C Byte 3 Bit 1
y b
y b
d e
C
B
a h
P
(
±
M
t i
U
2 1
2 1
5 1
5 1
1 1
4 1
4 1
0 1
3 1
4 1
0 1
3 1
5 1
6 1
4 1
2 1
2 1
2 1
1 1
1 1
0 2
8 1
6 1
1 1
0 1
d r
3 1
. 0
H
6
8
7
9
2
7
6
C
w
. 5
. 9
. 0
. 0
. 2
. 5
. 3
. 8
. 5
. 8
. 0
. 0
. 3
. 6
. 0
. 6
. 7
. 7
. 1
. 7
. 4
. 0
. 8
. 0
. 0
. 6
. 0
. 7
. 0
7 ,
. 5
. 6
. 3
5 2
L
) z
a
0 0
0 0
9 2
0 0
0 0
0 0
4 6
0 3
0 0
0 0
0 0
0 0
0 6
4 9
0 0
0 3
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
3 3
7 6
3 3
K
e r
4 :
%
D
e s
C
s e
e l
e
S
(
t n
D
r c
, t c
M
r e
1 1
2 1
2 1
1 1
5 1
1 1
4 1
0 1
0 1
0 1
3 1
0 1
0 1
0 1
3 1
0 1
1 1
2 1
1 1
2 1
2 1
1 1
1 1
2 1
1 1
0 2
8 1
6 1
1 1
0 1
R
p i
H
9
9
A
L
. 3
. 5
. 9
. 3
. 0
. 2
. 5
. 8
. 2
. 5
. 8
. 5
. 0
. 0
. 3
. 0
. 8
. 0
. 0
. 7
. 1
. 7
. 4
. 0
. 7
. 0
. 0
. 6
. 0
. 7
. 0
i t
. 5
S
) z
t a
M
p
n o
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 5
0 0
0 0
0 0
0 0
0 0
0 6
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
5 2
h c
e r
d a
d e
(
3
n I
M
0 1
2 1
1 1
3 1
V
7
8
8
7
7
9
7
6
7
9
7
6
6
8
6
7
8
7
6
8
8
7
7
8
7
6
7
7
u p
4
H
. 5
. 3
. 6
. 5
. 0
. 4
. 6
. 2
. 8
. 0
. 2
. 0
. 6
. 6
. 9
. 6
. 8
. 0
. 3
. 3
. 4
. 0
. 8
. 6
. 0
. 8
. 3
. 0
. 0
. 3
. 1
. 0
6 6
) z
3 3
3 3
0 0
3 3
0 0
7 6
7 6
0 0
3 3
0 0
0 0
0 0
7 6
7 6
7 0
7 6
7 6
0 0
3 3
0 5
7 6
7 6
0 0
0 0
0 0
0 0
3 3
0 0
7 6
3 3
3 3
0 0
s t
P
C
(
M
C I
4
5
3
3
4
3
4
3
3
4
3
6
3
3
4
3
3
4
3
3
3
4
3
3
3
3
4
4
6
5
3
3
H
. 3
. 0
. 6
. 5
. 6
. 5
. 0
. 9
. 8
. 0
. 9
. 0
. 0
. 7
. 1
. 7
. 7
. 8
. 4
. 3
. 3
. 4
. 3
. 9
. 6
. 1
. 2
. 0
. 6
. 5
. 6
. 5
L
z
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
7 6
7 6
7 6
3 3
3 3
7 1
3 3
3 3
3 5
3 3
3 3
7 6
5 7
3 3
3 3
7 6
3 3
7 6
7 6
K
=
P
2
2
1
1
2
1
2
1
1
2
1
3
1
1
2
1
1
2
1
1
1
2
1
1
1
1
2
2
3
2
1
1
I C
. 1
. 5
. 8
. 7
. 3
. 7
. 0
. 9
. 9
. 0
. 9
. 0
. 5
. 8
. 0
. 8
. 8
. 4
. 7
. 6
. 6
. 2
. 6
. 9
. 8
. 5
. 1
. 0
. 3
. 7
. 8
. 7
I
O
(
0 5
0 0
0 0
0 5
0 0
0 5
0 0
0 5
0 0
0 0
0 5
0 0
0 0
3 8
3 8
3 8
7 6
7 1
8 0
7 6
7 6
7 2
7 6
7 6
3 3
8 8
7 1
7 1
3 3
7 6
3 3
3 8
M
2 /
A
H
P
) z
C I
4
5
3
3
4
3
4
3
3
4
3
6
3
3
4
3
3
4
3
3
3
4
3
3
3
3
4
4
6
5
3
3
=
. 3
. 0
. 6
. 5
. 6
. 5
. 0
. 9
. 8
. 0
. 9
. 0
. 0
. 7
. 1
. 7
. 7
. 8
. 4
. 3
. 3
. 4
. 3
. 9
. 6
. 1
. 2
. 0
. 6
. 5
. 6
. 5
P
I C
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
7 6
7 6
7 6
3 3
3 3
7 1
3 3
3 3
3 5
3 3
3 3
7 6
5 7
3 3
3 3
7 6
3 3
7 6
7 6
0
N
P
0 0
W
t o
0
0
1
1 1
1 e
D