CY25822-2 Cypress Semiconductor, CY25822-2 Datasheet - Page 3

• Manufacturer Part Number: CY25822-2
• Description: CK-SSC Spread Spectrum Clock Generator
• Manufacturer: Cypress Semiconductor

Table 2. Block Read and Block Write Protocol (continued)
Table 3. Byte Read and Byte Write Protocol
Byte 0: Control Register
Table 4. Spread Spectrum Select
Document #: 38-07531 Rev. **
Bit
7
6
5
4
3
2
1
0
SS3
20:27
11:18
0
0
0
0
0
Bit
2:8
....
....
....
10
19
28
29
1
9
@Pup
1
0
0
0
1
1
1
0
Data Byte N –8 bits
Acknowledge from slave
Stop
Start
Slave address – 7 bits
Write = 0
Acknowledge from slave
Command Code – 8 bits
'1xxxxxxx' stands for byte operation, bits[6:0] of
the command code represents the offset of the
byte to be accessed
Acknowledge from slave
Data byte from master – 8 bits
Acknowledge from slave
Stop
SS2
0
0
0
0
1
Byte Write Protocol
Pin#
4, 5
4
4
4
4
4
SS1
SS0
SS1
SS2
SS3
Not Applicable
CLKOUT,
REFOUT
CLKOUT
Not Applicable
0
0
1
1
0
Description
Name
SS0
0
1
0
1
0
–
–
–
–
Reserved, must be written as 1
Power-down three-state enable
0 = three-state outputs, 1 = drive outputs low
(Applies only in Power Down State)
Spread Spectrum enable
0 = spread off, 1 = spread on
No Pins
Spread Mode
Down
Down
Down
Down
Down
21:27
30:37
11:18
Bit
2:8
56
....
....
....
....
10
19
20
28
29
38
39
1
9
Acknowledge
Data bytes from slave/Acknowledge
Data byte N from slave – 8 bits
Not Acknowledge
Stop
Start
Slave address – 7 bits
Write = 0
Acknowledge from slave
Command Code – 8 bits
'1xxxxxxx' stands for byte operation, bits[6:0]
of the command code represents the offset of
the byte to be accessed
Acknowledge from slave
Repeat start
Slave address – 7 bits
Read = 1
Acknowledge from slave
Data byte from slave – 8 bits
Not Acknowledge
Stop
Pin Description
Byte Read Protocol
Spread Amount%
Description
www.DataSheet4U.com
1.25
1.75
0.8
1.0
1.5
CY25822-2
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