EP9301 Datasheet, PDF (29/41 Pages) Cirrus Logic – Entry-level ARM9 System-on-chip Processor

EP9301
Entry Level ARM9 System-on-Chip Processor
Audio Interface
The following table contains the values for the timings of each of the SPI modes.
Parameter
SCLK cycle time
SCLK high time
SCLK low time
SCLK rise/fall time
Data from master valid delay time
Data from master setup time
Data from master hold time
Data from slave setup time
Data from slave hold time
Symbol
t_{clk_per}
t_{clk_high}
t_{clk_low}
t_clkrf
t_DMd
t_DMs
t_DMh
t_DSs
t_DSh
Min
Typ
-
tspix_clk
-
(tspix_clk) / 2
-
(tspix_clk) / 2
1
-
-
-
20
-
40
-
20
-
40
-
Note: The tspix_clk is programmable by the user.
Texas Instruments’ Synchronous Serial Format
Max
-
-
-
8
3
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
SCLK
SFRM
SSPTXD/
SSPRXD
Microwire
t_{clk_high}
t_{clk_per}
t_{clk_low}
t_clkrf
MSB
4 to 16 bits
LSB
Figure 16. TI Single Transfer Timing Measurement
t_{clk_high} t_{clk_per}
t_clkrf
SCLK
SFRM
t_{clk_low}
SSPTXD
MSB
SSPRXD
8-bit control
LSB
0 MSB
LSB
4 to 16 bits output data
Figure 17. Microwire Frame Format, Single Transfer
DS636PP5
©Copyright 2005 Cirrus Logic (All Rights Reserved)
29