EP2S15 ALTERA [Altera Corporation], EP2S15 Datasheet - Page 61

• Manufacturer Part Number: EP2S15
• Description: Stratix II Device Family
• Manufacturer: ALTERA [Altera Corporation]

Figure 2–36. EP2S60, EP2S90, EP2S130 & EP2S180 Device I/O Clock Groups
Altera Corporation
May 2007
IO_CLKM[7:0]
IO_CLKO[7:0]
IO_CLKN[7:0]
IO_CLKP[7:0]
8
8
8
8
IO_CLKA[7:0]
8
You can use the Quartus II software to control whether a clock input pin
drives either a global, regional, or dual-regional clock network. The
Quartus II software automatically selects the clocking resources if not
specified.
Clock Control Block
Each global clock, regional clock, and PLL external clock output has its
own clock control block. The control block has two functions:
■
■
IO_CLKL[7:0]
24 Clocks in the
24 Clocks in the
Clock source selection (dynamic selection for global clocks)
Clock power-down (dynamic clock enable/disable)
8
Quadrant
Quadrant
IO_CLKB[7:0]
8
IO_CLKK[7:0]
8
IO_CLKC[7:0]
8
IO_CLKJ[7:0]
24 Clocks in the
24 Clocks in the
8
Quadrant
Quadrant
IO_CLKD[7:0]
Stratix II Device Handbook, Volume 1
8
IO_CLKI[7:0]
8
8
8
8
8
Stratix II Architecture
IO_CLKE[7:0]
IO_CLKF[7:0]
IO_CLKG[7:0]
IO_CLKH[7:0]
I/O Clock Regions
2–53