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Jumper Options
2-4
2.2 Jumper Options
There are eight jumpers on the board that can be configured in various ways,
depending upon the user’s requirements. Their functions are briefly presented
in Table 2
− 2:
Table 2 − 2. Jumper Options
Jumper Function
W1 Gives users the option of disconnecting the 3.3-V driver ground
from the regular analog ground
W2 Manages FSD from the master. Either connecting FSD to the next
codec or providing relevant polarity
W3 Used along with W2 for correct polarity for FSD
W4 Selects whether U1 is either a master or a slave codec.
W5 Connects analog and digital ground together
P1.9–P1.10 Last FSD in the chain must be high
P1.11–P1.12 SCL must be high
P1.13–P1.14 SDA must be high
Since the EVM contains two codecs, there a variety of options available to the
user:
-
Stand-alone slave codec
-
Single master codec
-
Master/slave cascade
Note that the terms master and slave refer to the codec device itself. Keep in
mind that each of these codecs contains two independent channels connected
together internally. Thus any codec configuration described in this guide
actually comprises two individual codecs chained together and performing as
one unit.
Each of these options are discussed in the following sections.
2.2.1 Stand-Alone Slave
This configuration applies to EVM1 only. When a single codec is to be used
in slave mode, U1 is always the slave codec. Follow the jumper settings
detailed in Table 2
− 3 for this condition.
Table 2 − 3. Stand-Alone Slave Jumper Settings
Jumper 1 − 2 2 − 3
W2 Inserted Not inserted
W3 Not inserted Inserted
W4 Not inserted Inserted
P1.9–P1.10 N/A N/A