Altera Cyclone IV - Page 371

Chapter 1: Cyclone IV Transceivers Architecture 1–91
Transceiver Top-Level Port Lists
February 2015 Altera Corporation Cyclone IV Device Handbook,
Volume 2
pipestatus Output N/A
PIPE receiver status port.
■ Signal is 3 bits wide and is encoded as follows:
■ 3'b000: Received data OK
■ 3'b001: one SKP symbol added
■ 3'b010: one SKP symbol removed
■ 3'b011: Receiver detected
■ 3'b100: 8B/10B decoder error
■ 3'b101: Elastic buffer overflow
■ 3'b110: Elastic buffer underflow
■ 3'b111: Received disparity error
rx_elecidleinfersel Input N/A
Controls the electrical idle inference mechanism as specified in
Table 1–17 on page 1–57
Note to Table 1–28:
(1) For equivalent signals defined in PIPE 2.00 specification, refer to Table 1–15 on page 1–54.
Table 1–28. PIPE Interface Ports in ALTGX Megafunction for Cyclone IV GX
(1)
(Part 2 of 2)
Port Name
Input/
Output
Clock Domain Description
Table 1–29. Multipurpose PLL, General Purpose PLL and Miscellaneous Ports in ALTGX Megafunction for
Cyclone IV GX (Part 1 of 2)
Block Port Name
Input/
Output
Clock Domain Description
PLL
pll_inclk Input Clock signal
Input reference clock for the PLL (multipurpose PLL or
general purpose PLL) used by the transceiver instance. When
configured with the transmitter and receiver channel
configuration in Deterministic Latency mode, multiple
pll_inclk ports are available as follows.
Configured with PLL PFD feedback—x is the number of
channels selected:
■ pll_inclk[x-1..0] are input reference clocks for each
transmitter in the transceiver instance
■ pll_inclk[x+1..x] are input reference clocks for
receivers in the transceiver instance
Configured without PLL PFD feedback:
■ pll_inclk[0] is input reference clock for transmitters in
the transceiver instance
■ pll_inclk[1] is input reference clock for receivers in the
transceiver instance
pll_locked Output Asynchronous signal PLL (used by the transceiver instance) lock indicator.
pll_areset Input Asynchronous signal
PLL (used by the transceiver instance) reset.
■ When asserted, the PLL is kept in reset state.
■ When deasserted, the PLL is active and locks to the input
reference clock.
coreclkout Output Clock signal FPGA fabric-transceiver interface clock in bonded modes.