P5040/P5020 Reference Design Board User Guide, Rev. 0
54
Freescale Semiconductor
Programming Model
7.1.7
Auxiliary Register (PX_AUX)
The auxiliary register is a general-purpose R/W register that resets at initial Power-ON or via chassis reset
sources. RX-AUX preserves its value between Aurora-, COP- or watchdog-initiated resets.
Figure 28. Auxiliary Register (PX_AUX)
3
SDREFCLK3_QD_EN
Enables/disables Serdes Reference Clock to Bank 3.
• 0 - disabled
• 1 - enabled
4
USBCLK_EN
Enables/disables USB Clock Oscillator.
• 0 - disabled
• 1 - enabled
5
SDREFCLK4_QE_EN
Enables/disables Serdes Reference Clock to Bank 4.
• 0 - disabled
• 1 - enabled
6
OE_REF_EN
Enables/disables SGMII PHY Reference Clock.
7
—
Reserved
0
1
2
3
4
5
6
7
R
USER
W
Reset
0
0
0
0
0
0
0
0
Offset
0x06
Table 33. PX_AUX Field Descriptions
Bits
Name
Description
0–7
USER
User defined
Table 32. PX_SERCLK Field Descriptions (continued)
Bits
Name
Description