CS43122 Datasheet, PDF (11/28 Pages) Cirrus Logic – 122dB, 24-Bit, 192kHz DAC for Digital Audio

CS43122
SWITCHING CHARACTERISTICS - CONTROL PORT
(T_A = 25° C; VD = 5.25 V to 3.0 Volts; Inputs: logic 0 = AGND, logic 1 = VD, C_L = 30 pF)
SPI Mode
Parameter
Symbol
Min
Max
CCLK Clock Frequency
RST Rising Edge to CS Falling
CCLK Edge to CS Falling
CS High Time Between Transmissions
CS Falling to CCLK Edge
CCLK Low Time
CCLK High Time
CDIN to CCLK Rising Setup Time
CCLK Rising to DATA Hold Time
Rise Time of CCLK and CDIN
Fall Time of CCLK and CDIN
CCLK Falling to CDOUT valid
f_sclk
-
6
t_srs
500
-
(Note 9)
t_spi
500
-
t_csh
1.0
-
t_css
20
-
t_scl
66
-
t_sch
66
-
t_dsu
40
-
(Note 10)
t_dh
15
-
(Note 11)
t_r2
-
100
(Note 11)
t_f2
-
100
t_ov
45
Unit
MHz
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
Notes: 9. t_spi only needed before first falling edge of CS after RST rising edge. t_spi = 0 at all other times.
10. Data must be held for sufficient time to bridge the transition time of CCLK.
11. For F_SCK < 1 MHz
RST
t _srs
CS
CCLK
CDIN
t _spi t _css
t _scl t _sch
t _r2
t _f2
t _{dsu t dh}
Figure 3. SPI Control Port Timing
t _csh
11