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CY2545 Datasheet(PDF) 3 Page - Cypress Semiconductor

Part No. CY2545
Description  Quad PLL Programmable Spread Spectrum Clock Generator with Serial I2C Interface
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Maker  CYPRESS [Cypress Semiconductor]
Homepage  http://www.cypress.com
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CY2545 Datasheet(HTML) 3 Page - Cypress Semiconductor

 
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PRELIMINARY
CY2545
CY2547
Document #: 001-13196 Rev. **
Page 3 of 17
Figure 2. Pin Diagram - CY2547 24 LD QFN
Table 2. Pin Definition - CY2547 24 LD QFN (VDD_CORE = 1.8V Supply)
22
VDD
Power
2.5V/3.0V/3.3V Power supply for input and regulator
23
XOUT
Output
Crystal output
24
XIN/EXCLKIN
Input
Crystal input or 1.8V external clock input
Pin Number
Name
IO
Description
1
GND
Power
Power supply ground
2
CLK1
Output
Programmable output clock
3
VDD_CLK_B1
Power
1.8V Power supply for bank1 (CLK1, CLK2) output
4
PD#/OE
Input
Power down or output enable
5
VDD_CORE
Power
1.8V Power supply for core
6
CLK2
Output
Programmable output clock
7
GND
Power
Power supply ground
8
SCL
Input
Serial data clock
9
SDA
Input/Output
Serial data input
10
CLK3/FS
Output/Input
Multifunction programmable pin, CLK3 Output or Frequency
select input pin, FS
11
CLK4
Output
Programmable output clock
12
GND
Power
Power supply ground
13
CLK5
Output
Programmable output clock
14
VDD_CLK_B2
Power
1.8V Power supply for bank2 (CLK3, CLK4, CLK5) output
15
CLK6/SSON
Output/Input
Multifunction programmable pin, CLK6 Output or spread spectrum
control input pin, SSON
16
VDD_CLK_B3
Power
1.8V Power Supply for bank3 (CLK6, CLK7, CLK8) output
17
CLK7
Output
Programmable output clock
18
GND
Power
Power supply ground
Pin Number
Name
IO
Description
2
3
CLK1
PD#OE
CY2547
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
GND
VDD_CLK_B1
VDD_CORE
CLK2
CLK5
VDD_CLK_B
CLK6/SSON
VDD_CLK_B
CLK7
GND
24LD QFN
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