CS43122 Datasheet, PDF (10/28 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)
2 Wire Mode
Parameter
Symbol
Min
Max
Unit
SCL Clock Frequency
f_scl
-
RST Rising Edge to Start
t_irs
500
Bus Free Time Between Transmissions
t_buf
4.7
Start Condition Hold Time (prior to first clock pulse)
t_hdst
4.0
Clock Low time
t_low
4.7
Clock High Time
t_high
4.0
Setup Time for Repeated Start Condition
t_sust
4.7
SDA Hold Time from SCL Falling
(Note 8) t_hdd
0
SDA Setup time to SCL Rising
t_sud
250
Rise Time of Both SDA and SCL Lines
t_r
-
Fall Time of Both SDA and SCL Lines
t_f
-
Setup Time for Stop Condition
t_susp
4.7
100
KHz
-
ns
-
µs
-
µs
-
µs
-
µs
-
µs
-
µs
-
ns
1
µs
300
ns
-
µs
Notes: 8. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
RST
t _irs
Stop
Start
Repeated
Start
SDA
SCL
t _buf
t _hdst
t _high
t _hdst
tf
t _low t _hdd
t _sud
t _sust
tr
Figure 2. 2 Wire Mode Control Port Timing
Stop
t _susp
10