adsp-21266skstz-2b Analog Devices, Inc., adsp-21266skstz-2b Datasheet - Page 37

• Manufacturer Part Number: adsp-21266skstz-2b
• Description: Sharc Embedded Processor
• Manufacturer: Analog Devices, Inc.

SPI Interface Protocol—Slave
Table 36. SPI Interface Protocol—Slave
Parameter
Timing Requirements
t
t
t
t
t
t
t
t
Switching Characteristics
t
t
t
t
t
SPICLKS
SPICHS
SPICLS
SDSCO
HDS
SSPIDS
HSPIDS
SDPPW
DSOE
DSDHI
DDSPIDS
HDSPIDS
DSOV
CPHASE = 1
CPHASE = 0
(OUTPUT)
(OUTPUT)
(CP = 0)
(CP = 1)
(INPUT)
SPICLK
(INPUT)
SPICLK
(INPUT)
(INPUT)
(INPUT)
SPIDS
MISO
MOSI
MISO
MOSI
t
S D S C O
t
t
t
D S O E
D S O V
D S O E
Serial Clock Cycle
Serial Clock High Period
Serial Clock Low Period
SPIDS Assertion to First SPICLK Edge
CPHASE = 0
CPHASE = 1
Last SPICLK Edge to SPIDS Not Asserted CPHASE = 0
Data Input Valid to SPICLK Edge (Data Input Setup Time)
SPICLK Last Sampling Edge to Data Input Not Valid
SPIDS Deassertion Pulse Width (CPHASE = 0)
SPIDS Assertion to Data Out Active
SPIDS Deassertion to Data High Impedance
SPICLK Edge to Data Out Valid (Data Out Delay Time)
SPICLK Edge to Data Out Not Valid (Data Out Hold Time)
SPIDS Assertion to Data Out Valid (CPHASE = 0)
t
t
S P IC H S
S S P I D S
t
t
D D S P I D S
MSB VALID
S P I C L S
MSB VALID
MSB
MSB
t
D D S P I D S
Figure 26. SPI Interface Protocol—Slave
t
Rev. E | Page 37 of 48 | July 2008
t
S P I C H S
S P I C L S
t
S S P I D S
t
D D S P I D S
LSB VALID
t
t
S P I C L K S
S S P I D S
ADSP-21261/ADSP-21262/ADSP-21266
t
H D S P I D S
LSB
LSB VALID
t
H S P I D S
t
H S P I D S
t
2
H D S
Min
4 × t
2 × t
2 × t
2 × t
2 × t
2 × t
2
2 × t
0
0
2 × t
LSB
CCLK
CCLK
CCLK
CCLK
CCLK
CCLK
CCLK
CCLK
– 2
– 2
+ 1
+ 1
– 2
t
S D P P W
t
t
t
D S D H I
H D S P I D S
D S D H I
Max
5
5
7.5
5 × t
CCLK
+ 2
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns