参数资料
型号: IP-SLITE2
厂商: Altera
文件页数: 51/110页
文件大小: 0K
描述: IP SERIALLITE II
标准包装: 1
系列: *
类型: MegaCore
功能: SerialLite II 协议
许可证: 初始许可证
3–28
Chapter 3: Parameter Settings
Error Handling
Table 3–11. ALTGX Support Signals
Signal
reconfig_fromgxb
gxb_powerdown
I/O
O
I
Description
The reconfig_fromgxb output signal is driven to an external dynamic
reconfiguration block. The width of this bus depends on the number of lanes (it may
require multiple transceiver QUAD blocks), and the device family (for Arria II GX and
Stratix IV, the bus is wider due to offset cancelation support).
This signal identifies the transceiver channel whose settings are being transmitted to
the dynamic reconfiguration. This signal must be connected as described in the
A rr ia II GX Device Ha n dbook or the S t r atix IV Device Ha n dbook if the external dynamic
reconfiguration block is used. Otherwise, leave this signal unconnected.
For Arria II GX and Stratix IV, you must use the dynamic reconfiguration block because
they require offset cancelation.
gxb_powerdown resets and powers down all circuits in the transceiver block. This
signal does not affect the refclk buffers and reference clock lines.
All the gxb_powerdown input signals of cores placed in the same quad should be tied
together. The gxb_powerdown signal should be tied low or should remain asserted for
at least 2 ms whenever it is asserted.
Error Handling
The SerialLite II MegaCore function does error checking and has an interface to view
local errors. The errors are categorized, and the effect of an error depends on the type
of error that occurs.
The SerialLite II MegaCore function has three error types:
Data error
Link error
Catastrophic error
The causes and results of these errors are summarized in Table 3–12 .
Table 3–12. Error Summary (Part 1 of 2)
Error Type
Cause
Action
Catastrophic
LSM cannot reverse polarity
LSM cannot reorder lanes
Eight consecutive {|TS1|} sequences
SerialLite II enters
nonrecoverable state
received in all lanes simultaneously
Loss of character alignment
Loss of lane alignment
Link
Loss of characters from
Trigger link initialization
underflow/overflow
SerialLite II MegaCore Function
User Guide
Data error threshold exceeded
Retry-on-error timer expired three
times
January 2014 Altera Corporation
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