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Chapter 11: Deterministic Latency PHY IP Core 11–19
Register Interface and Register Descriptions
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Table 11–19 specifies the registers that you can access over the 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.
phy_mgmt_readdata[31:0]
Output Output data.
phy_mgmt_write
Input Write signal.
phy_mgmt_read
Input Read signal.
phy_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 11–18. Avalon-MM PHY Management Interface (Part 2 of 2)
Signal Name Direction Description
Table 11–19. Deterministic Latency PHY IP Core Registers (Part 1 of 3)
Word
Addr
Bits R/W Register Name Description
PMA Common Control and Status Registers
0x021 [31:0] RW
cal_blk_powerdown
Writing a 1 to channel <
n
> powers down the calibration
block for channel <
n
>.
0x022 [31:0] R
pma_tx_pll_is_locked
Bit[P] indicates that the TX CMU PLL (P) is locked to the
input reference clock. There is typically one
pma_tx_pll_is_locked
bit per system.
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.
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