OMAP
TM
4 PandaBoard System
Reference Manual
Revision 0.4
September 22, 2010
DOC-21010
Page 63 of 83
Figure 22 – 38.4 MHz Input Clock Probe Point (h_FREF_ALTCLK_IN_OMAP)
4.1.2
USBB1_PHY_REFCLK Probe Point
The 19.2 MHz reference input clock to the USBB1 Phy device may be probed at R44-1 or U5-4 as shown
below in red. These parts are located directly below the 14-pin JTAG connector J8.
Figure 23
–
USB Phy Ref Clock In Probe Point (USBB1_PHY_REFCLK)
4.1.3
CLK32K_AUD Probe Point
The 32.768KHz input clock to the TWL6040 Audio Companion IC may be probed at TP14 as shown in
Figure 24. This testpoint may be located between the TWL6040 device at U19 and the TWL6030 Power
Companion device at U12.
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