EP4CE55F23C8 Altera, EP4CE55F23C8 Datasheet - Page 414

• Manufacturer Part Number: EP4CE55F23C8
• Description: IC CYCLONE IV FPGA 55K 484FBGA
• Manufacturer: Altera
• Series: CYCLONE® IV Er

Specifications of EP4CE55F23C8

• Number Of Logic Elements/cells: 55856
• Number Of Labs/clbs: 3491
• Total Ram Bits: 2340000
• Number Of I /o: 324
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

3–24
Table 3–5. rx_dataoutfull[31..0] FPGA Fabric-Transceiver Channel Interface Signal Descriptions (Part 3 of 3)
Cyclone IV Device Handbook, Volume 2
FPGA Fabric-Transceiver
Channel Interface Description
20-bit FPGA fabric-Transceiver
Channel Interface with PCS-PMA set
to 10 bits
f
Data Rate Reconfiguration Mode Using RX Local Divider
The RX local divider resides in the RX PMA block for every channels. This is a
hardware feature where a /2 divider is available in each of the receiver channel for the
supported device. You can use this RX local divider to reconfigure the data rate at the
receiver channel. This can be used for protocols such as SDI that has data rates in
divisions of 2.
By using this RX local divider, you can support two different data rates without using
additional transceiver PLLs. This dynamic reconfiguration mode is available only for
the receiver and not applicable to the transmitter. This reconfiguration mode using the
RX local divider (/2) is only supported and available in EP4CGX30 (F484 package),
EP4CGX50, and EP4CGX75 devices.
For more information about this RX local divider, refer to the
Transceiver Architecture
Receive Signal Description (Based on Cyclone IV GX Supported FPGA
Fabric-Transceiver Channel Interface Widths)
Two 10-bit Data (rx_dataout)
rx_dataoutfull[9:0] - rx_dataout (LSByte) and
rx_dataoutfull[25:16] - rx_dataout (MSByte)
wo Receiver Sync Status Bits
rx_dataoutfull[10] - rx_syncstatus (LSB) and rx_dataoutfull[26] -
rx_syncstatus (MSB)
rx_dataoutfull[11] and rx_dataoutfull[27]: 8B/10B disparity error
indicator (rx_disperr)
Two Receiver Pattern Detect Bits
rx_dataoutfull[12] - rx_patterndetect (LSB) and
rx_dataoutfull[28] - rx_patterndetect (MSB)
rx_dataoutfull[13] and rx_dataoutfull[29]: Rate Match FIFO deletion
status indicator (rx_rmfifodatadeleted) in non-PCI Express (PIPE) functional
modes
rx_dataoutfull[14] and rx_dataoutfull[30]: Rate Match FIFO insertion
status indicator (rx_rmfifodatainserted) in non-PCI Express (PIPE) functional
modes
rx_dataoutfull[15] and rx_dataoutfull[31]: 8B/10B running disparity
indicator (rx_runningdisp)
chapter.
Chapter 3: Cyclone IV Dynamic Reconfiguration
© December 2010 Altera Corporation
Cyclone IV GX
Dynamic Reconfiguration Modes