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Table 6. LS1046ARDB clocks (continued)
Clock generator
Clocks
Specifications
Destination
Y4: Oscillator
PLD_CLK
• Frequency: 32.768 kHz
• Output type: LVCMOS
• Operating voltage: 3.3 V
CPLD
U30: 831724KILFT
MPCIE_CLK_[P, N]
• Frequency: 100 MHz
• Output type: HCSL
• Operating voltage: 3.3 V
PCIe slot 1 (mini-PCIe slot)
(reference clock)
PCIE1_CLK_[P, N]
• Frequency: 100 MHz
• Output type: HCSL
• Operating voltage: 3.3 V
PCIe slot 2 (reference clock)
PCIE2_CLK_[P, N]
• Frequency: 100 MHz
• Output type: HCSL
• Operating voltage: 3.3 V
PCIe slot 3 (reference clock)
XGT1588_CLK_[P, N]
• Frequency: 100 MHz
• Output type: HCSL
• Operating voltage: 3.3 V
10G AQR107 PHY (1588 clock)
Y1: Crystal
CLK_50M_[P, N]
• Frequency: 50 MHz
10G AQR107 PHY (reference clock)
Y3: Oscillator
156P25M_CLK_[P, N]
• Frequency: 156.25 MHz
• Output type: LVDS
• Operating voltage: 3.3 V
U31 clock buffer
U31: 831724KILFT
SD1_REFCLK2_[P, N]
• Frequency: 100/156.25
MHz
• Output type: HCSL
• Operating voltage: 3.3 V
LS1046A processor (SerDes1 PLL 2
clock)
Y500: Oscillator
XFI1_REFCLK
• Frequency: 25 MHz
• Output type: LVCMOS
• Operating voltage: 3.3 V
XFI retimer (DS110DF111) (reference
clock)
U36: CPLD
RTCCLK_18
• Frequency: 32.768 kHz
• Output type: LVCMOS
• Operating voltage: 1.8 V
LS1046A processor (RTC)
LS1046ARDB Functional Description
QorIQ LS1046A Reference Design Board Reference Manual, Rev. 2, 30 May 2019
22
NXP Semiconductors