CY2213(2012) View Datasheet(PDF) - Cypress Semiconductor
Part Name
Description
Manufacturer
CY2213 Datasheet PDF : 16 Pages
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CY2213
1 bit
7 bits
S Slave Address
Figure 4. CY2213 Transfer Format
1 bit 1 bit
R/W Ack
8 bits
1 bit
8 bits
1 bit 8 bits
Dummy Byte 0 Ack Dummy Byte 1 Ack Data 0
1 bit
Ack
Data 1
8 bits
Ack P
1 bit
Table 1. Serial Interface Address for the CY2213
A6
A5
A4
A3
A2
A1
A0
R/W
1
1
0
0
1
0
1
0
Table 2. Serial Interface Programming for the CY2213
Data0
Data1
Data2
b7
QCNTBYP
P<7>
Reserved
b6
SELPQ
P<6>
Reserved
b5
Q<5>
P<5>
Reserved
b4
Q<4>
P<4>
Reserved
b3
Q<3>
P<3>
Reserved
b2
Q<2>
P<2>
Reserved
b1
Q<1>
P<1>
Reserved
b0
Q<0>
P<0>
Reserved
To program the CY2213 using the two-wire serial interface, set
the SELPQ bit HIGH. The default setting of this bit is LOW. The
P and Q values are determined by the following formulas:
Pfinal = (P7..0 + 3) × 2
Qfinal = Q5..0 + 2.
PLL Frequency = Reference x P/Q = Output
If the QCNTBYP bit is set HIGH, then Qfinal defaults to a value of
1. The default setting of this bit is LOW.
If the SELPQ bit is set LOW, the PLL multipliers are set using the
values in the Select Function Table.
CyberClocks™ has been developed to generate P and Q values
for stable PLL operation. This software is downloadable from
www.cypress.com
Reference
Figure 5. PLL Block Diagram
Q
VCO
P
PLL
Output
Document Number: 38-07263 Rev. *H
Page 5 of 16
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