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CY2545 Datasheet(PDF) 2 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) 2 Page - Cypress Semiconductor

 
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PRELIMINARY
CY2545
CY2547
Document #: 001-13196 Rev. **
Page 2 of 17
Pinouts
Figure 1. Pin Diagram - CY2545 24 LD QFN
Table 1. Pin Definition - CY2545 24 LD QFN (VDD = 2.5V, 3.0V or 3.3V Supply)
Pin Number
Name
IO
Description
1
GND
Power
Power supply ground
2
CLK1
Output
Programmable output clock, output voltage depends on bank1 voltage
3
VDD_CLK_B1
Power
2.5V/3.0V/3.3V power supply for bank1 (CLK1, CLK2) output
4
PD#/OE
Input
Power down or output enable
5
DNU
DNU
Do not use this pin
6
CLK2
Output
Programmable output clock, output voltage depends on bank1 voltage
7
GND
Power
Power supply ground
8
SCL
Input
Serial data clock
9
SDA
Input/Output
Serial data input/output
10
CLK3/FS
Output/Input
Multifunction programmable pin, CLK3 output or frequency select input
pin, FS. Output voltage depends on bank2 voltage
11
CLK4
Output
Programmable output clock, output voltage depends on bank2 voltage
12
GND
Power
Power supply ground
13
CLK5
Output
Programmable output clock, output voltage depends on bank2 voltage
14
VDD_CLK_B2
Power
2.5V/3.0V/3.3V 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. Output voltage depends on bank3 voltage
16
VDD_CLK_B3
Power
2.5V/3.0V/3.3V Power supply for bank1 (CLK6, CLK7, CLK8) output
17
CLK7
Output
Programmable output clock. output voltage depends on bank3 voltage
18
GND
Power
Power supply ground
19
GND
Power
Power supply ground
20
CLK8
Output
Programmable output clock. output voltage depends on bank3 voltage
21
CLKIN/RST
Input/Input
Multifunction programmable pin. High true reset input or 2.5V/3.0V/3.3V
reference clock input. The signal level of CLKIN input must follow VDD
power supply on pin 22.
2
3
CLK1
PD#OE
CY2545
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
DNU
CLK2
CLK5
VDD_CLK_B
CLK6/SSON
VDD_CLK_B
CLK7
GND
24LD QFN
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