ep9315 Cirrus Logic, Inc., ep9315 Datasheet - Page 50

• Manufacturer Part Number: ep9315
• Description: Enhanced Universal Platform System-on-chip Processor
• Manufacturer: Cirrus Logic, Inc.

EP9315
Enhanced Universal Platform SOC Processor
50
Inter-IC Sound - I
SCLK cycle time
SCLK high time
SCLK low time
SCLK rise/fall time
SCLK to LRCLK assert delay time
Hold between SCLK assert then LRCLK deassert
or
Hold between LRCLK deassert then SCLK assert
SDI to SCLK deassert setup time
SDI from SCLK deassert hold time
SCLK assert to SDO delay time
SDO from SCLK assert hold time
Note:
LRCLK
SCLK
SDO
SDI
t
clk_high
t
i2s_clk
is programmable by the user.
2
S
Parameter
t
clk_per
©
Copyright 2005 Cirrus Logic (All Rights Reserved)
Figure 35. Inter-IC Sound (I
t
LRd
t
clk_low
t
SDOd
t
SDIs
2
S) Timing Measurement
Symbol
t
t
t
clk_high
clk_low
t
t
clk_per
t
t
SDOd
SDOh
t
t
t
t
SDIs
SDIh
LRh
clkrf
LRd
LRh
t
SDOh
Min
12
1
0
0
1
-
-
-
-
-
(t
(t
i2s_clk
i2s_clk
t
i2s_clk
Typ
4
-
-
-
-
-
-
) / 2
) / 2
t
SDIh
t
clkrf
Max
8
3
9
-
-
-
-
-
-
-
DS638PP4
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns