mk1493-05 Integrated Device Technology, mk1493-05 Datasheet - Page 2

• Manufacturer Part Number: mk1493-05
• Description: Differential Spread Spectrum Clock Driver
• Manufacturer: Integrated Device Technology

Pin Assignment
Spread Spectrum Selection Table
The spread enable and spread select[3:0] SMBus register bits control spread modulation and enable/disable. The CLKIN
clock input and REF clock output will not have or be spread. At device power-up the spread-spectrum is enabled and
hardware control is enabled. The S0 configuration bit is hard-coded to zero when hardware control mode is selected.
IDT™ DIFFERENTIAL SPREAD SPECTRUM CLOCK DRIVER
MK1493-05
DIFFERENTIAL SPREAD SPECTRUM CLOCK DRIVER
S3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
PWRDWN
REF/SEL
S2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
SDATA
CLKIN
SCLK
S3
S2
S1
16 Pin 173 Mil (0.65mm) TSSOP
S1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
2
3
4
5
6
7
8
S0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Spread%
16
15
14
13
12
11
10
9
+1.25
1.25
1.75
+0.3
+0.4
+0.5
+0.6
+0.8
+1.0
+1.5
0.8
1.0
1.5
2.0
2.5
3.0
VSSIREF
VDDA
VSSA
IREF
CLKOUT
CLKOUT
VSS
VDD
Spread Type
Center
Center
Center
Center
Center
Center
Center
Center
Down
Down
Down
Down
Down
Down
Down
Down
2
MK1493-05
CLOCK SYNTHESIZER
REV G 011608