
14–24 Chapter 14: Arria V GZ Transceiver Native PHY IP Core
10G PCS Parameters
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
Interlaken Frame Generator
TX Frame generator generates the metaframe. It encapsulates the payload from MAC
with the framing layer control words, including sync, scrambler, skip and diagnostic
words. Table 14–23 describes the Interlaken frame generator parameters.
f
Interlaken Frame Synchronizer
The Interlaken frame synchronizer block achieves lock by looking for four
synchronization words in consecutive metaframes. After synchronization, the frame
synchronizer monitors the scrambler word in the metaframe and deasserts the lock
signal after three consecutive mismatches and starts the synchronization process
again. Lock status is available to the FPGA fabric. Table 14–24 describes the Interlaken
frame synchronizer parameters.
Table 14–23. Interlaken Frame Generator Parameters
Parameter Range Description
teng_tx_framgen_enable On/Off
When you turn this option On, the frame generator block of the
10G PCS is enabled.
teng_tx_framgen_user_length
0-8192
Specifies the metaframe length.
teng_tx_framgen_burst_enable On/Off
When you turn this option On, the frame generator burst
functionality is enabled.
Enable tx_10g_frame port On/Off
When you turn this option On, the 10G PCS includes the
tx_10g_frame
output port. When asserted,
tx_10g_frame
indicates the beginning of a new metaframe inside the frame
generator.
Enable
tx_10g_frame_diag_status port
On/Off
When you turn this option On, the 10G PCS includes the
tx_10g_frame_diag_status
2-bit input port.
This port contains the lane Status Message from the framing
layer Diagnostic Word, bits[33:32]. This message is inserted into
the next Diagnostic Word generated by the frame generation
block. The message must be held static for 5 cycles before and 5
cycles after the
tx_frame
pulse.
Enable tx_10g_frame_burst_en
port
On/Off
When you turn this option On, the 10G PCS includes the
tx_10g_frame_burst_en
input port.
This port controls frame generator data reads from the TX FIFO.
The value of this signal is latched once at the beginning of each
Metaframe. It controls whether data is read from the TX FIFO or
SKIP Words are inserted for the current Metaframe. It must be
held static for 5 cycles before and 5 cycles after the
tx_frame
pulse.
When
tx_10g_frame_burst_en
is 0, the frame generator does
not read data from the TX FIFO for current Metaframe. It insert
SKIPs. When
tx_10g_frame_burst_en
is 1, the frame
generator reads data from the TX FIFO for current Metaframe.
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