ep2sgx30c Altera Corporation, ep2sgx30c Datasheet - Page 144

• Manufacturer Part Number: ep2sgx30c
• Description: Stratix Ii Gx Device Data Sheet
• Manufacturer: Altera Corporation

High-Speed Differential I/O with DPA Support
High-Speed
Differential I/O
with DPA
Support
2–136
Stratix II GX Device Handbook, Volume 1
Notes to
(1)
(2)
(3)
(4)
(5)
(6)
Non-
Stratix II GX
Table 2–37. Supported TDO/TDI Voltage Combinations (Part 2 of 2)
Device
The TDO output buffer meets V
The TDO output buffer meets V
An external 250-Ω pull-up resistor is not required, but recommended if signal levels on the board are not optimal.
Input buffer must be 3.3-V tolerant.
Input buffer must be 2.5-V tolerant.
Input buffer must be 1.8-V tolerant.
Table
VCC = 3.3 V
VCC = 2.5 V
VCC = 1.8 V
VCC = 1.5 V
Buffer Power
2–37:
TDI Input
Stratix II GX devices contain dedicated circuitry for supporting
differential standards at speeds up to 1 Gbps. The LVDS differential I/O
standards are supported in the Stratix II GX device. In addition, the
LVPECL I/O standard is supported on input and output clock pins on the
top and bottom I/O banks.
The high-speed differential I/O circuitry supports the following
high-speed I/O interconnect standards and applications:
■
■
■
There are two dedicated high-speed PLLs in the EP2SGX30 device and
four dedicated high-speed PLLs in the EP2SGX60, EP2SGX90, and
EP2SGX130 devices to multiply reference clocks and drive high-speed
differential SERDES channels.
Tables 2–38
PLL can clock in each of the Stratix II GX devices. In
2–41
channels driven directly by the PLL. The second row below it shows the
maximum channels a Fast PLL can drive if cross bank channels are used
from the adjacent center Fast PLL. For example, in the 780-pin
FineLine BGA EP2SGX30 device, PLL 1 can drive a maximum of
V
C C I O
v
v
v
OH
OH
SPI-4 Phase 2 (POS-PHY Level 4)
SFI-4
Parallel RapidIO standard
,
v
the first row for each transmitter or receiver provides the number of
(1),
(1),
(1),
(MIN) = 2.4 V.
(MIN) = 2.0 V.
= 3.3 V
(1)
(4)
(4)
(4)
through
Stratix II GX TDO V
V
C C I O
v
v
v
v
2–41
(2),
(2),
= 2.5 V
(2)
(2)
(5)
(5)
show the number of channels that each Fast
C C I O
V
C C I O
Voltage Level in I/O Bank 4
v
v
v
v
= 1.8 V V
(3)
(3)
(6)
Level shifter
Level shifter
Level shifter
C C I O
required
required
required
v
= 1.5 V V
Tables 2–38
Altera Corporation
October 2007
Level shifter
Level shifter
Level shifter
C C I O
required
required
required
through
v
= 1.2 V