ISD5216E WINBOND [Winbond], ISD5216E Datasheet - Page 20
![no-image](/images/no-image-200.jpg)
ISD5216E
Manufacturer Part Number
ISD5216E
Description
8 to 16 minutes voice record/playback device with integrated codec
Manufacturer
WINBOND [Winbond]
Datasheet
1.ISD5216E.pdf
(75 pages)
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ISD5216EY
Manufacturer:
PANASONIC
Quantity:
45 000
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As shown in the following figure, the bus has three lines:
•
•
•
Serial data is transmitted in two’s complement with the MSB first. The MSB is transmitted first
because the transmitter and receiver may have different word lengths. It isn’t necessary for the
transmitter to know how many bits the receiver can handle, nor does the receiver need to know how
many bits are being transmitted.
When the system word length is greater than the transmitter word length, the word is truncated (least
significant data bits are set to ‘0’) for data transmission. If the receiver is sent more bits than its word
length, the bits after the LSB are ignored. On the other hand, if the receiver is sent fewer bits than its
word length, the missing bits are set to zero internally. And so, the MSB has a fixed position, whereas
the position of the LSB depends on the word length. The transmitter always sends the MSB of the
next word one clock period after the WS changes.
Serial data sent by the transmitter may be synchronized with either the trailing (HIGH-to-LOW) or the
leading (LOW-to-HIGH) edge of the clock signal. However, the serial data must be latched into the
receiver on the leading edge of the serial clock signal, and so there are some restrictions when
7.4. I2S SERIAL INTERFACE
continuous serial clock (SCK)
word select (WS)
serial data (SDIO)and the device generating SCK and WS is the master.
7.4.1. Serial Data
Simple System Configurations and Basic Interface Timing
- 20 -
ISD5216
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