EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 287

• Manufacturer Part Number: EP3SE50F780I3N
• Description: Stratix III
• Manufacturer: Altera

Figure 8–8. DQS Pins in Stratix III I/O Banks
Altera Corporation
November 2007
DQS20L
DQS21L
DQS40L
PLL_L4
PLL_L1
DQS1L
PLL_L2
PLL_L3
DLL2
DLL1
1A
1C
2B
1B
2C
2A
DQS44T
DQS1B
8A
3A
8B
3B
The DQ pin numbering is based on ×4 mode. In ×4 mode, there are up to
eight DQS/DQ groups per I/O bank. Each ×4 mode DQS/DQ group
consists of a DQS pin, a DQSn pin, and four DQ pins. In ×8/×9 mode, the
I/O bank combines two adjacent ×4 DQS/DQ groups; one pair of DQS
and DQSn/CQn pins can drive all the DQ and parity pins in the new
combined group that consists of up to 10 DQ pins (including parity or
8C
3C
DQS23T
DQS22B
PLL_T1
PLL_B1
Stratix III Device
PLL_T2
PLL_B2
External Memory Interfaces in Stratix III Devices
DQS22T
DQS23B
7C
4C
Stratix III Device Handbook, Volume 1
7B
4B
7A
4A
DQS44B
DQS1T
6B
6C
6A
5C
5B
5A
DLL3
DLL4
PLL_R2
PLL_R3
DQS21R
DQS20R
DQS40R
DQS1R
PLL_R4
PLL_R1
8–17