MK1491-06SLF IDT, Integrated Device Technology Inc, MK1491-06SLF Datasheet - Page 2

• Manufacturer Part Number: MK1491-06SLF
• Description: IC CLK SOURCE AMD GEODE 28-SOIC
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock/Frequency Synthesizerr

Specifications of MK1491-06SLF

• Input: Crystal
• Output: LVCMOS
• Frequency - Max: 49MHz
• Voltage - Supply: 3.15 V ~ 3.45 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC
• Frequency-max: 49MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin Assignment
Early PCI Control Table
EMI Control
Spread direction is DOWN.
Pin Descriptions
IDT™ / ICS™ AMD GEODE™ CLOCK SOURCE
Number
MK1491-06
AMD GEODE™ CLOCK SOURCE
4, 7, 11,
EPCI#
1, 9, 14
17, 23
LE#
Pin
0
1
0
1
2
3
5
6
14.3M (SEL AUDIO)
1 ns early
Normal
ON
OFF
14.3M (TS)
SLOW#
SEL24
14.3M
GND
GND
GND
VDD
VDD
VDD
XO
FS
PCI Low EMI
14.3M (TS)
PCI (Pin 22)
XI
Name
14.3M
GND
VDD
Pin
XO
XI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Type
TI/O
Pin
O
O
P
P
I
AC97 AUDIO (PEN)
PCI
VDD
PCI
PCI
GND
PCI (EPCI#)
48M (LE#)
VDD
24M/14.3M
VDD
GND
PCISTP#
PWRDWN#
Connect to +3.3 V. Must be same voltage on all pins.
Crystal connection. Connect to a 14.31818 MHz crystal or input clock.
Crystal connection. Connect to a 14.31818 MHz crystal, or leave
unconnected for clock.
Connect to Ground.
14.318 MHz output. Input control for all clocks per table above.
14.318 MHz buffered reference clock output.
2
PCI Frequency Select Table
24M/14.3M Frequency Select Table
PCIF Enable Control
PCIF continues to run in PCI STOP mode. See table on page 4.
AC97 Audio Frequency Select
SEL AUDIO
SEL24
TS
PEN
M
M
0
0
1
1
M
0
1
0
1
M
Pin Description
0
1
14.31818 MHz
24.0 MHz
PCI
PCI
PCIF
FS
0
1
0
1
0
1
16.9344 MHz
24.576 MHz
49.152 MHz
Pin 25
24M/14.3M
Tristate all clocks
AC97 AUDIO
Reserved
33.3 MHz
37.5 MHz
30 MHz
25 MHz
PCI
PCI
PCIF
PCIF
Pin 24
MK1491-06
CLOCK SYNTHESIZER
REV L 051310