HC4GX15 Datasheet, PDF (153/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 11: Power Supply and Temperature Sensing Diode in HardCopy IV Devices
11–3
Supporting HardCopy IV and Stratix IV Power Supplies
Table 11–2. HardCopy IV GX External Power Supply Requirements (Part 2 of 2)
Power Supply Stratix IV GX Voltage
Pin
Value (V)
HardCopy IV GX
Voltage Value (V)
Description
VCCH_GXBR[#]
1.1
(1)
1.1
Transceiver clock power for transceiver block # (right
side)
Notes to Table 11–2:
(1) The V_CCH and V_CCL powers are per transceiver block.
(2) HardCopy IV GX devices do not require Programmable Power Technology.
(3) If V_REF pins are not used, you must connect them to either V_CCIO in the same bank or GND.
(4) This power pin can be disconnected or remain connected on the board.
f For possible values of each power supply, refer to the DC and Switching Characteristics
of HardCopy IV Devices chapter in volume 4 of the HardCopy IV Device Handbook.
3.3-V I/O Standard Support
The maximum I/O power supply voltage for Stratix IV and HardCopy IV device
families is the same because of the same process technology. Both Stratix IV and
HardCopy IV devices support up to 3.3-V I/O voltage standard using a bank supply
voltage (V_CCIO) of 3.0 V.
f For more information about 3.3-V I/O standards refer to the HardCopy IV Device I/O
Features chapter in volume 1 of the HardCopy IV Device Handbook.
Although Stratix IV and HardCopy IV devices support up to 3.0-V power supplies,
HardCopy IV 3.0-V I/Os can properly interface with 3.3-V external ports with little
loss in noise margin, given similar input and output voltage electrical characteristics.
Supporting HardCopy IV and Stratix IV Power Supplies
The core power rails in Stratix IV and HardCopy IV devices are V_CC and V . _{CCD_PLL}
Both the Stratix IV and HardCopy IV core power rails are powered by a 0.9-V source.
Table 11–3 shows the summary of core voltage requirements for these devices.
Table 11–3. Core Voltage Requirements for Stratix IV and HardCopy IV Devices
Symbol
Parameter
Stratix IV
V_CC
Core voltage and periphery circuitry power supply
0.9
VC CD _ P LL
PLL digital power supply
0.9
HardCopy IV Unit
0.9
V
0.9
V
As Table 11–3 shows, Stratix IV-to-HardCopy IV device mapping requires all core
voltages to be 0.9-V for both Stratix IV and HardCopy IV devices. Figure 11–1 shows
an example of the power management of a HardCopy IV E device.
© January 2010 Altera Corporation
HardCopy IV Device Handbook, Volume 1