参数资料
型号: IP-POSPHY4
厂商: Altera
文件页数: 66/144页
文件大小: 0K
描述: IP POS-PHY L4
标准包装: 1
系列: *
类型: MegaCore
功能: POS-PHY 4 级接口,链路层/物理层
许可证: 初始许可证
4–26
Chapter 4: Functional Description—Receiver
Signals
Table 4–8. Atlantic FIFO Buffer Control and Status (Part 2 of 2)
Signal
err_ry_fifo_oflwN
ctl_ry_errchk_chkpkt
Direction Clock Domain
Output
Input –
Static
reset
Description
Indicates that the FIFO buffer has overflowed, and data has
been lost (one for each Atlantic interface).
Atlantic FIFO error checking enable. Disable to ignore
missing SOP and missing EOP detection and correction.
Value applies to all Atlantic buffer levels. Only change at
reset.
err_ry_msopN
err_ry_meopN
Output
Output
rxsys_clk
Indicates a packet was received on the SPI-4.2 bus with a
missing start of packet (one for each Atlantic buffer).
Indicates a packet was received on the SPI-4.2 bus with a
missing end of packet (one for each Atlantic buffer).
Address qualifier for err_ry_meop and err_ry_msop
stat_ry_mp_erradr[7:0]
Output
flags. Only present for the shared buffer with embedded
addressing mode.
Note to Table 4–8 :
(1) For 128-and 64-bit variations, N is equal to log2( buffer size /( data path width × 16). For 32-bit variations, N is equal to log2( buffer size / data
path width ×8).
Table 4–9. SPI-4.2 Channel Control and Status (Part 1 of 3)
Signal
ctl_ry_ae[n:0]
ctl_ry_af[n:0]
Direction Clock Domain
Input
Input
Description
Almost empty defines starving to hungry threshold.
Units are in bytes. Value applies to all Atlantic buffers.
Only change at reset.
Almost full defines hungry to satisfied threshold. Units
are in bytes. Value applies to all Atlantic buffers. Only
change at reset.
ctl_ry_fifostatoverride
ctl_ry_extstat_val (1)
ctl_ry_extstat_adr[7:0] (1)
Input -
Static
Input
Input
rxsys_clk
Asserting this signal allows external logic to control the
outgoing status of each port. Only change at reset.
Valid qualifier for the external status input. This value is
ignored if ctl_ry_fifostatoverride is deasserted.
Port number for the external status value. This value is
ignored if ctl_ry_fifostatoverride is deasserted.
Status for port indicated by ctl_ry_extstat_adr .
ctl_ry_extstat[1:0] (1)
Input
Input -
This value is ignored if ctl_ry_fifostatoverride is
deasserted.
Controls the edge of rsclk on which transitions of
ctl_rs_statedge
Static
constant
rsclk
rstat occur. (1 = positive edge, 0 = negative edge).
Only change at reset.
Note to Table 4–9 :
(1) The external status address you provide does not have to be incrementing or have any set sequence. You can provide any address value, at any
time. If the external address provided is for an unprovisioned port, the value is written into the internal RAM at that address, but the internal
status block never reads from that location.
POS-PHY Level 4 MegaCore Function User Guide
May 2013 Altera Corporation
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