at TA = 25°C, IOVDD = 3.3 V or 1.8 V and 20-pF load on all outputs
(unless otherwise noted); see Figure 3 for timing diagram
|
MIN |
NOM |
MAX |
UNIT |
t(BCLK) |
BCLK period |
40 |
|
|
ns |
tH(BCLK) |
BCLK high pulse duration (1) |
18 |
|
|
ns |
tL(BCLK) |
BCLK low pulse duration (1) |
18 |
|
|
ns |
tSU(FSYNC) |
FSYNC setup time |
8 |
|
|
ns |
tHLD(FSYNC) |
FSYNC hold time |
8 |
|
|
ns |
tr(BCLK) |
BCLK rise time(2) |
10% - 90% rise time |
|
|
10 |
ns |
tf(BCLK) |
BCLK fall time(2) |
90% - 10% fall time |
|
|
10 |
ns |
(1) The BCLK minimum high or low pulse duration must be higher
than 25 ns (to meet the timing specifications), if the SDOUT data line is
latched on the opposite BCLK edge polarity than the edge used by the device to
transmit SDOUT data.
(2) The BCLK maximum rise and fall time can be relaxed to 13 ns
if the BCLK frequency used in the system is below 20 MHz. Relaxing the BCLK rise
and fall time can cause noise to increase because of higher clock jitter.