Texas Instruments TLV320AIC33EVM, User Manual, Page: 5 / 53

www.ti.com
4 Power Supplies
4.1 Stand-Alone Operation
Power Supplies
Table 3. Digital Interface Pin Out (continued)
PIN NUMBER SIGNAL DESCRIPTION
J17.5 NC Not Connected
J17.6 NC Not Connected
J17.7 WCLK Audio Serial Data Bus Word Clock (Input/Output)
J17.8 NC Not Connected
J17.9 NC Not Connected
J17.10 DGND Digital Ground
J17.11 DIN Audio Serial Data Bus Data Input (Input)
J17.12 NC Not Connected
J17.13 DOUT Audio Serial Data Bus Data Output (Output)
J17.14 NC Not Connected
J17.15 NC Not Connected
J17.16 SCL I
2
C Serial Clock
J17.17 MCLK Master Clock Input
J17.18 DGND Digital Ground
J17.19 NC Not Connected
J17.20 SDA I
2
C Serial Data Input/Output
Note that J17 comprises the signals needed for an I
2
S™ serial digital audio interface; the control interface
(I
2
C™ and RESET) signals are routed to J16. I
2
C is actually routed to both connectors; however, the
device is connected only to J16.
J15 provides connection to the common power bus for the TLV320AIC33EVM. Power is supplied on the
pins listed in
Table 4 .
Table 4. Power Supply Pin Out
SIGNAL PIN NUMBER SIGNAL
NC J15.1 J15.2 NC
+5VA J15.3 J15.4 NC
DGND J15.5 J15.6 AGND
DVDD (1.8V) J15.7 J15.8 NC
IOVDD (3.3V) J15.9 J15.10 NC
The TLV320AIC33EVM-PDK motherboard (the USB-MODEVM Interface board) supplies power to J15 of
the TLV320AIC33EVM. Power for the motherboard is supplied either through its USB connection or via
terminal blocks on that board.
When used as a stand-alone EVM, power can be applied to J15 directly, making sure to reference the
supplies to the appropriate grounds on that connector.
CAUTION
Verify that all power supplies are within the safe operating limits shown on
the
TLV320AIC33 data sheet before applying power to the EVM.
SBAU114 – November 2005 TLV320AIC33EVM and TLV320AIC33EVM-PDK User's Guide 5