User manual

AM335xStarterKitHardwareUsersGuide
9
Pin No Signal Name Description
1 USB_DC USB BUS VOLTAGE
2 USBDM_UP USB DATA MINUS
3 USBDP_UP USB DATA PLUS
4 NC (USB_ID) No connect
5 DGND Ground
Table 6: Micro AB – USB0
USB 1
The USB port1 of the AM335x is connected to the USB type A connector. USB power (5V )is provided to this
connector through a buck-boost converter circuit.
Pin No Signal Name Description
1 VUSB_VBUS1 USB BUS VOLTAGE
2 USB1_CONN_DM USB1 DATA MINUS
3 USB1_CONN_DP USB1 DATA PLUS
4 DGND Ground
Table 7: USB A Type – USB1
Audio Codec
The TLV320AIC3106 is a low-power stereo audio codec with stereo headphone amplifier from TI. CLKOUT1 of
the processor is sourcing the master clock of the codec (24Mhz). The CODEC I2C is capable of supporting both the
standard and fast modes. I2C address of the codec is configured as 0011011. MCASP1 interface of the processor is
connected to the audio interface of the codec. The stereo audio output is terminated in a stereo headphone Jack. The
Pinout assignments for the headset jack are provided below.
Pin No Signal Description
1 AGND_AUD Analog Ground
3 HS_SPKRP Headset stereo LOUT
10 NC No Connect
2 HD_SPKRP Headset stereo ROUT
Table 8: Headset Jack
WLAN
LBEE5ZSTNC-523 Type TN WiFi / BT Module from Murata is used to provide the WLAN and the Bluetooth
connectivity for the TMDSSK3358 design. The WLAN design has IEEE802.11 b, g, n compliance for WLAN and
Version4.0 with Blue tooth Low Energy (BLE) for BT. This module requires an external 32.768 KHz, +/-150ppm
clock. This is sourced by the CLKOUT2 clock out pin of the processor. The required digital interfaces for the
module are connected to the UART1 and McASP0 ports of the processor through voltage level converters.
Note that due to a HW bug in the WiFi Antenna matching network design, customers may observe significant
degradation in throughput (15-20 Mbps - Typical) as well as reduced WiFi Range when using the AM335x Starter
Kit and COM6M module with AM335-EVM, with the onboard WiFi Antenna.