SI4708-C Datasheet, PDF (8/40 Pages) Silicon Laboratories – BROADCAST FM RADIO TUNER FOR PORTABLE APPLICATIONS

Si4708/09-C
Table 6. 2-Wire Control Interface Characteristics^1,2,3
(V_D = V_A = 2.7 to 5.5 V, V_IO = 1.62 to 3.6 V, T_A = –20 to 85 °C)
Parameter
Symbol Test Condition
Min
Typ
Max
Unit
SCLK Frequency
f_SCL
0
—
400
kHz
SCLK Low Time
t_LOW
1.3
—
—
µs
SCLK High Time
SCLK Input to SDIO Setup
(START)
t_HIGH
t_SU:STA
0.6
—
—
µs
0.6
—
—
µs
SCLK Input to SDIO Hold (START) t_HD:STA
0.6
—
—
µs
SDIO Input to SCLK Setup
SDIO Input to SCLK Hold^4,5
t_SU:DAT
t_HD:DAT
100
—
—
ns
0
—
900
ns
SCLK input to SDIO Setup (STOP) t_SU:STO
0.6
—
—
µs
STOP to START Time
t_BUF
1.3
—
—
µs
SDIO Output Fall Time
t_f:OUT
20 + 0.1 C_b
—
250
ns
SDIO Input, SCLK Rise/Fall Time
t_f:IN
t_r:IN
20 + 0.1 C_b
—
300
ns
SCLK, SDIO Capacitive Loading
C_b
—
—
50
pF
Input Filter Pulse Suppression
t_SP
—
—
50
ns
Notes:
1. When V_IO = 0 V, SCLK and SDIO are low impedance.
2. When selecting 2-wire mode, the user must ensure that SCLK is high during the rising edge of RST, and stays high
until after the 1st start condition.
3. When selecting 2-wire Mode, the user must ensure that a 2-wire start condition (falling edge of SDIO while SCLK is
high) does not occur within 300 ns before the rising edge of RST.
4. As a 2-wire transmitter, the Si4708/09-C delays SDIO by a minimum of 300 ns from the V_IH threshold of SCLK to
comply with the 0 ns t_HD:DAT specification.
5. The maximum t_HD:DAT has only to be met when f_SCL = 400 kHz. At frequencies below 400 kHz, t_HD:DAT may be violated
so long as all other timing parameters are met.
8
Rev. 1.2