CS4265-DNZ Cirrus Logic Inc, CS4265-DNZ Datasheet - Page 54
![no-image](/images/manufacturer_photos/0/1/141/cirrus_logic_inc_sml.jpg)
CS4265-DNZ
Manufacturer Part Number
CS4265-DNZ
Description
IC,Soundcard Circuits,LLCC,32PIN,PLASTIC
Manufacturer
Cirrus Logic Inc
Type
Stereo Audior
Datasheet
1.CS4265-CNZ.pdf
(56 pages)
Specifications of CS4265-DNZ
Data Interface
Serial
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
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
32-QFN
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
54
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