Altera UG-01080 Betriebsanweisung Seite 337

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Chapter 14: Arria V GZ Transceiver Native PHY IP Core 14–29
Interfaces
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Gearbox
The gearbox adapts the PMA data width to a wider PCS data width when the PCS is
not two or four times the PMA width.Table 14–31 describes the gearbox parameters.
Interfaces
The Native PHY includes several interfaces that are common to all parameterizations.
It also has separate interfaces for the Standard and 10G PCS datapaths. If you use
dynamic reconfiguration to change between the Standard and 10G PCS datapaths,
your top-level HDL file includes the port for both the Standard and 10G PCS
datapaths. In addition, the Native PHY allows you to enable ports, even for disabled
blocks to facilitate dynamic reconfiguration.
1 Because this Native PHY allows you to dynamically reconfigure between
The Native PHY uses the following prefixes for port names:
Standard PCS ports—
tx_std_
,
rx_std_
10G PCS ports—
tx_10g_
,
rx_10g_
PMA ports—
tx_pma_
,
rx_pma_
Table 14–31. Gearbox Parameters
Parameter Range Description
Enable TX data polarity
inversion
On/Off
When you turn this option On, the gearbox inverts the polarity of
TX data allowing you to correct incorrect placement and routing
on the PCB.
Enable TX data bitslip On/Off
When you turn this option On, the TX gearbox operates in bitslip
mode.
Enable RX data polarity
inversion
On/Off
When you turn this option On, the gearbox inverts the polarity of
RX data allowing you to correct incorrect placement and routing
on the PCB.
Enable RX data bitslip On/Off
When you turn this option On, the 10G PCS RX block
synchronizer operates in bitslip mode.
Enable tx_10g_bitslip port On/Of
When you turn this option On, the 10G PCS includes the
tx_10g_bitslip
input port. The data slips 1 bit for every
positive edge of the
tx_10g_bitslip
input. The maximum shift
is <pcswidth>-1 bits, so that if the PCS is 64 bits wide, you can
shift 0–63 bits.
Enable rx_10g_bitslip port On/Off
When you turn this option On, the 10G PCS includes the
rx_10g_bitslip
input port. The data slips 1 bit for every
positive edge of the
rx_10g_bitslip
input. he maximum shift is
<pcswidth>-1 bits, so that if the PCS is 64 bits wide, you can shift
0–63 bits.
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