CS4265-CNZ Cirrus Logic Inc, CS4265-CNZ Datasheet - Page 54

• Manufacturer Part Number: CS4265-CNZ
• Description: IC CODEC 24BIT 104DB 32QFN
• Manufacturer: Cirrus Logic Inc
• Type: Stereo Audior

Specifications of CS4265-CNZ

• Package / Case: 32-QFN
• Data Interface: PCM Audio Interface
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 104 / 104
• Voltage - Supply, Analog: 3.13 V ~ 5.25 V
• Voltage - Supply, Digital: 3.13 V ~ 5.25 V
• Operating Temperature: -10°C ~ 70°C
• Mounting Type: Surface Mount
• Number Of Adc Inputs: 4
• Number Of Dac Outputs: 2
• Conversion Rate: 192 KSPS
• Interface Type: Serial (I2S)
• Resolution: 24 bit
• Operating Supply Voltage: 3.3 V, 5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 10 C
• Number Of Channels: 2 ADC/2 DAC
• Thd Plus Noise: - 95 dB ADC / - 90 dB DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1001 - BOARD EVAL FOR CS4265 CODEC
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1039

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11.3.1 One-Byte Mode
11.3.2 Two-Byte Mode
In many applications, the channel status blocks for the A and B channels will be identical. In this situation,
if the user reads a byte from one of the channel's blocks, the corresponding byte for the other channel will
be the same. Similarly, if the user wrote a byte to one channel's block, it would be necessary to write the
same byte to the other block. One-Byte Mode takes advantage of the often identical nature of A and B
channel status data.
When reading data in One-Byte Mode, a single byte is returned, which can be from channel A or B data,
depending on a register control bit. If a write is being done, the CS4265 expects a single byte to be input
to its control port. This byte will be written to both the A and B locations in the addressed word.
One-Byte Mode saves the user substantial control port access time, as it effectively accesses two byte’s
worth of information in 1 byte's worth of access time. If the control port's auto increment addressing is used
in combination with this mode, multi-byte accesses such as full-block reads or writes can be done espe-
cially efficiently.
There are those applications in which the A and B channel status blocks will not be the same, and the
user is interested in accessing both blocks. In these situations, Two-Byte Mode should be used to access
the E buffer.
In this mode, a read will cause the CS4265 to output two bytes from its control port. The first byte out rep-
resents the A channel status data, and the second byte represents the B channel status data. Writing is
similar, in that two bytes must now be input to the CS4265's control port. The A channel status data is
first; B channel status data is second.
CS4265
DS657F2