CY22395 Cypress Semiconductor, CY22395 Datasheet - Page 10

• Manufacturer Part Number: CY22395
• Description: (CY22393 / CY22394 / CY22395) Three-PLL Serial-Programmable Flash-Programmable Clock Generator
• Manufacturer: Cypress Semiconductor

Document #: 38-07186 Rev. *B
Serial Programming Interface Timing
SDAT Write
Multiple
Contiguous
Registers
SDAT Read
Current
Address
Read
SDAT Read
Multiple
Contiguous
Registers
Start Signal
Start Signal
Start Signal
7-bit
Device
Address
7-bit
Device
Address
7-bit
Device
Address
R/W = 0
R/W = 1
R/W = 0
1 Bit
1 Bit
1 Bit
SDAT
SCLK
ACK
ACK
ACK
Slave
1 Bit
Slave
Slave
1 Bit
1 Bit
Register
Address
(XXH)
Register
Data
Register
Address
(XXH)
8-bit
8-bit
8-bit
START
Figure 3. Data Valid and Data Transition Periods
1 Bit
Slave
ACK
1 Bit
Slave
ACK
1 Bit
Slave
ACK
Register
Data
(XXH)
VIH
VIL
Device
Address
+R/W=1
8-bit
7-bit
Repeated
Start bit
Figure 2. Data Frame Architecture
Figure 4. Start and Stop Frame
1 Bit
Slave
ACK
1 Bit
Master
ACK
1 Bit
Master
ACK
(XXH+1)
(XXH)
Data Valid
CLK
Register
Data
Register
Data
Stop Signal
8-bit
8-bit
HIGH
1 Bit
Slave
ACK
1 Bit
Master
ACK
Transition
to next Bit
Register
Data
(XXH+2)
Register
Data
(XXH+1)
8-bit
8-bit
Transition
t
to next Bit
DH
CLK
LOW
t
SU
1 Bit
Slave
ACK
1 Bit
Master
ACK
(FFH)
(FFH)
Register
Data
Register
Data
8-bit
8-bit
STOP
1 Bit
Slave
ACK
1 Bit
Master
ACK
Register
Data
(00H)
Register
Data
(00H)
8-bit
8-bit
1 Bit
Slave
ACK
1 Bit
Master
ACK
SDAT
SCLK
1 Bit
Slave
ACK
1 Bit
Master
ACK
Stop Signal
Stop Signal
CY22393
CY22394
CY22395
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