MK1491-06S IDT, Integrated Device Technology Inc, MK1491-06S Datasheet - Page 4

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

Specifications of MK1491-06S

• 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: Contains lead / RoHS non-compliant

Power Down Control Table
Power-on Default Conditions
IDT™ / ICS™ AMD GEODE™ CLOCK SOURCE
PCISTP# PWRDWN# SLOW#
Pin #
MK1491-06
AMD GEODE™ CLOCK SOURCE
10
12
13
15
16
21
22
28
5
8
X
0
1
Key: 1 = connected to VDD, 0 = connected to ground, X = any valid logic level, combination inputs/outputs should
be connected to VDD or ground through a 10 k resistor as shown below.
SEL AUDIO
PWRDWN#
Function
PCISTP#
SLOW#
SEL 24
EPCI#
PEN
LE#
TS
FS
0
1
1
Default
X
X
X
M
M
M
1
1
1
1
1
1
1
Power down
All outputs enabled.
Audio clock (pin 28) set to 24.576 MHz
PCI clocks set to 33.3 MHz. Refer to Power Down Control Table above.
PCI frequency = 33.3 MHz.
24M/14.3M (pin 19) set to 24 MHz.
All clocks running.
PCI clocks running.
Low EMI function OFF
Pin 22 set to normal PCI signal (not early).
PCI (pin 25) set to PCI clock (33.33 MHz). PCI (pin 24) set to PCIF clock
(33.33 MHz).
PCI STOP
MODE
ON
LOW
LOW
PCI
ON
4
PCIF
LOW
ON
ON
Condition
24/14.3 14.3
LOW
ON
ON
LOW
ON
ON
All outputs low. PLL’s
and oscillators off.
PCI clocks
synchronously enter
and leave low state.
All clocks on.
Description
MK1491-06
CLOCK SYNTHESIZER
REV L 051310