EP1AGX20CF484C6N Altera, EP1AGX20CF484C6N Datasheet - Page 16

• Manufacturer Part Number: EP1AGX20CF484C6N
• Description: IC ARRIA GX FPGA 20K 484FBGA
• Manufacturer: Altera
• Series: Arria GXr

Specifications of EP1AGX20CF484C6N

• Number Of Logic Elements/cells: 21580
• Number Of Labs/clbs: 1079
• Total Ram Bits: 1229184
• Number Of I /o: 230
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 484-FBGA
• Family Name: Arria™ GX
• Number Of Logic Blocks/elements: 21580
• # I/os (max): 230
• Process Technology: CMOS
• Operating Supply Voltage (typ): 1.2V
• Logic Cells: 21580
• Ram Bits: 1229184
• Operating Supply Voltage (min): 1.15V
• Operating Supply Voltage (max): 1.25V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 484
• Package Type: FC-FBGA
• No. Of Macrocells: 21580
• Family Type: Arria GX
• No. Of I/o's: 230
• Operating Frequency Max: 622.08MHz
• Operating Temperature Range: 0°C To +85°C
• Logic Case Style: BGA
• No. Of Pins: 484
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 544-2395

2–10
Receiver Path
Arria GX Device Handbook, Volume 1
Programmable Pre-Emphasis
The programmable pre-emphasis module controls the output driver to boost high
frequency components and compensate for losses in the transmission medium, as
shown in
Figure 2–10. Pre-Emphasis Signaling
Pre-emphasis percentage is defined as (V
differential emphasized voltage (peak-to-peak) and V
steady-state voltage (peak-to-peak).
PCI Express (PIPE) Receiver Detect
The Arria GX transmitter buffer has a built-in receiver detection circuit for use in PCI
Express (PIPE) mode. This circuit provides the ability to detect if there is a receiver
downstream by sending out a pulse on the channel and monitoring the reflection.
This mode requires a tri-stated transmitter buffer (in electrical idle mode).
PCI Express (PIPE) Electric Idles (or Individual Transmitter Tri-State)
The Arria GX transmitter buffer supports PCI Express (PIPE) electrical idles. This
feature is only active in PCI Express (PIPE) mode. The tx_forceelecidle port puts
the transmitter buffer in electrical idle mode. This port is available in all PCI Express
(PIPE) power-down modes and has specific usage in each mode.
This section describes the data path through the Arria GX receiver. The sub-blocks are
described in order from the receiver buffer to the PLD-receiver parallel interface.
Receiver Buffer
The Arria GX receiver input buffer supports the 1.2-V and 1.5-V PCML I/O standards
at rates up to 3.125 Gbps. The common mode voltage of the receiver input buffer is
programmable between 0.85 V and 1.2 V. You must select the 0.85 V common mode
voltage for AC- and DC-coupled PCML links and 1.2 V common mode voltage for
DC-coupled LVDS links.
Figure
2–10. Pre-emphasis is set statically using the ALTGXB megafunction.
Pre-Emphasis % = (
V
MAX
V
V
MAX
V
MAX
MIN
MIN
/V
− 1) × 100
MIN
– 1) × 100, where V
MIN
is the differential
© December 2009 Altera Corporation
Chapter 2: Arria GX Architecture
M AX
is the
Transceivers