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3–18 Chapter 3: 10GBASE-R PHY IP Core
Register Interface and Register Descriptions
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
Table 314 describes the signals that comprise the Avalon-MM PHY Management
interface.
f Refer to the “Typical Slave Read and Write Transfers” and “Master Transfers” sections in
the “Avalon Memory-Mapped Interfaces” chapter of the Avalon Interface Specifications for
timing diagrams.
Table 315 specifies the registers that you can access over the Avalon-MM PHY
management interface using word addresses and a 32-bit embedded processor. A
single address space provides access to all registers.
1 Writing to reserved or undefined register addresses may have undefined side effects.
Table 3–14. Avalon-MM PHY Management Interface
Signal Name Direction Description
mgmt_clk
Input
The clock signal that controls the Avalon-MM PHY management,
interface. For Stratix IV devices, the frequency range is 37.5–50 MHz.
There is no frequency restriction for Stratix V devices; however, if you
plan to use the same clock for the PHY management interface and
transceiver reconfiguration, you must restrict the frequency range of
mgmt_clk
to 100–150 MHz to meet the specification for the
transceiver reconfiguration clock.
mgmt_clk_reset
Input
Global reset signal that resets the entire 10GBASE-R PHY. This signal
is active high and level sensitive.
mgmt_addr[7:0]
Input 8-bit Avalon-MM address.
mgmt_writedata[31:0]
Input Input data.
mgmt_readdata[31:0]
Output Output data.
mgmt_write
Input Write signal. Asserted high.
mgmt_read
Input Read signal. Asserted high.
mgmt_waitrequest
Output
When asserted, indicates that the Avalon-MM slave interface is unable
to respond to a read or write request. When asserted, control signals
to the Avalon-MM slave interface must remain constant.
Table 3–15. 10GBASE-R Register Descriptions (Part 1 of 3)
Word
Addr
Bit R/W Name Description
PMA Common Control and Status
0x021 [31:0] RW
cal_blk_powerdown
Writing a 1 to channel <n> powers down the calibration
block for channel <n> . This register is only available if you
select Use external PMA control and reconfig on the
Additional Options tab of the GUI.
0x022 [31:0] RO
pma_tx_pll_is_locked
Bit[P] indicates that the TX clock multiplier unit CMU PLL
[P] is locked to the input reference clock. This register is
only available if you select Use external PMA control and
reconfig on the Additional Options tab of the GUI.
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