SV51005
2014.01.10
Clock Sources Per Quadrant
4-7
Figure 4-8: PCLK Networks for Stratix V E E9 and EB Devices, and Stratix V GX A9, AB, BB, and B9 Devices
This figure represents the top view of the silicon die that corresponds to a reverse view of the device package.
Vertical
PCLK[0..25]
Horizontal
PCLK[0..20]
Horizontal
Vertical
PCLK[113..137]
Horizontal
PCLK[146..167]
Horizontal
PCLK[21..42]
Horizontal
PCLK[43..64]
Horizontal
PCLK[65..83]
Vertical
PCLK[26..51]
Q1
Q4
Q2
Q3
PCLK[125..146]
Horizontal
PCLK[103..124]
Horizontal
PCLK[84..102]
Vertical
PCLK[88..112]
Clock Sources Per Quadrant
The Stratix V devices provide 33 section clock (SCLK) networks in each spine clock per quadrant. The SCLK
networks can drive six row clocks in each logic array block (LAB) row, nine column I/O clocks, and two
core reference clocks. The SCLKs are the clock resources to the core functional blocks, PLLs, and I/O interfaces
of the device.
A spine clock is another layer of routing between the GCLK, RCLK, and PCLK networks before each clock
is connected to the clock routing for each LAB row. The settings for spine clocks are transparent. The
Quartus II software automatically routes the spine clock based on the GCLK, RCLK, and PCLK networks.
The following figure shows SCLKs driven by the GCLK, RCLK, PCLK, or the PLL feedback clock networks
in each spine clock per quadrant. The GCLK, RCLK, PCLK, and PLL feedback clocks share the same routing
to the SCLKs. To ensure successful design fitting in the Quartus II software, the total number of clock
resources must not exceed the SCLK limits in each region.
Clock Networks and PLLs in Stratix V Devices
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Altera Corporation
相关PDF资料
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