User guide

• Channel Bonding on page 3-44
PLLs
Table 3-1: Transmit PLLs in Arria 10 Devices
PLL Type Data Rate Range Characteristics
Advanced Transmit (ATX) PLL 611 Mbps to 28.3 Gbps
(44)
• Best jitter performance
• LC tank based voltage controlled
oscillator (VCO)
• Supports fractional synthesis
mode
• Used for both bonded and non-
bonded channel configurations
Fractional PLL (fPLL) 611 Mbps to 12.5 Gbps
• Ring oscillator based VCO
• Supports fractional synthesis
mode
• Used for both bonded and non-
bonded channel configurations
Clock Multiplier Unit (CMU) PLL or
Channel PLL
(45)
611 Mbps to 10.3125 Gbps
• Ring oscillator based VCO
• Used as an additional clock source
for non-bonded applications
Note: For best overall performance, use the ATX PLL first, followed by the fPLL. The channel PLL can be
used as a transmit PLL if additional PLLs are required.
ATX PLL
The ATX PLL contains three LC tank-based voltage controlled oscillators (VCOs). These three LC VCOs
have different frequency ranges to support a continuous range of operation. The ATX PLL supports both
integer and fractional frequency synthesis modes.
(43)
Data rates depend on characterization and may change after the characterization report is available.
(44)
ATX PLL supports maximum data rate of 28.3 Gbps only for GT devices. For GX devices, the maximum
data rate supported is 17.4 Gbps.
(45)
The CMU PLL or Channel PLL of channel 1 and channel 4 can be used as a transmit PLL or as a clock data
recovery (CDR) block. The channel PLL of all other channels (0, 2, 3, and 5) can only be used as a CDR.
UG-01143
2015.05.11
PLLs
3-3
PLLs and Clock Networks
Altera Corporation
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