Texas Instruments PCM2706 Evaluation Module PCM2706EVM-U PCM2706EVM-U Ficha De Dados
Códigos do produto
PCM2706EVM-U
MC
MS
MD
MC
MS
MD
16 Bits
16 Bits
Frames
N
?
N Frames
(2) Continuous Write Operation
(1) Single Write Operation
MSB
MSB
MSB
MSB
LSB
LSB
MSB
LSB
LSB
LSB
MS
MC
MD
50% of V
DD
50% of V
DD
50% of V
DD
t
(MLS)
t
(MCH)
t
(MCL)
t
(MCY)
t
(MDS)
t
(MDH)
t
(MLH)
t
(MHH)
SBFS036A – AUGUST 2011 – REVISED JULY 2012
Serial Programming Interface (PCM2705C/7C)
The PCM2705C/7C supports a serial interface (SPI) to program the descriptor and to set the HID state.
Descriptor data are described in the
Descriptor data are described in the
section.
illustrates the SPI timing;
lists the respective timing characteristics.
Figure 29. SPI Timing Diagram
Table 13. SPI Timing Characteristics
SYMBOL
PARAMETER
MIN
MAX
UNIT
t
(MCY)
MC pulse cycle time
100
ns
t
(MCL)
MC low-level time
50
ns
t
(MCH)
MC high-level time
50
ns
t
(MHH)
MS high-level time
100
ns
t
(MLS)
MS falling edge to MC rising edge
20
ns
t
(MLH)
MS hold time
20
ns
t
(MDH)
MD hold time
15
ns
t
(MDS)
MD setup time
20
ns
shows the SPI write timing sequence.
Figure 30. SPI Write Operation
26
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