Altera Transceiver PHY IP Core Manual de usuario Pagina 265

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Signal Name Direction Description
phy_mgmt_writedata[31:0]
Input Input data.
phy_mgmt_readdata[31:0]
Output Output data.
phy_mgmt_write
Input Write signal.
phy_mgmt_read
Input Read signal.
For more information about the Avalon-MM and Avalon-ST protocols, including timing diagrams, refer
to the Avalon Interface Specifications .
The following table describes the registers that you can access over the PHY Management Interface using
word addresses and a 32-bit embedded processor. The automatic reset controller automatically performs
the required reset sequence. After this reset sequence completes, you can manually initiate TX or RX
resets using the reset_control control register. You can also specify the clock data recovery (CDR)
circuit to lock to the incoming data or the reference clock using the pma_rx_set_locktodata and
pma_rx_set_locktoref registers.
Note:
Writing to reserved or undefined register addresses may have undefined side effects.
Table 10-13: Low Latency PHY IP Core Registers (Part 1 of 2)
Word Addr Bits R/W Register Name Description
Reset Control Registers–Automatic Reset Controller
0x041 [31:0] RW
reset_ch_bitmask
Reset controller channel bitmask for digital
resets. The default value is all 1s. Channel
<n> can be reset when bit <n> = 1.
0x042 [1:0]
W reset_control (write) Writing a 1 to bit 0 initiates a TX digital
reset using the reset controller module. The
reset affects channels enabled in the reset_
ch_bitmask. Writing a 1 to bit 1 initiates a
RX digital reset of channels enabled in the
reset_ch_bitmask.
R reset_status(read) Reading bit 0 returns the status of the reset
controller TX ready bit. Reading bit 1
returns the status of the reset controller RX
ready bit.
0x061 [31:0] RW phy_serial_loopback_ Writing a 1 to channel < n > puts channel <
n > in serial loopback mode. For informa‐
tion about pre or postCDR serial loopback
modes, refer to Loopback Modes.
PMA Control and Status Registers
10-18
Register Interface and Register Descriptions
UG-01080
2015.01.19
Altera Corporation
Low Latency PHY IP Core
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