参数资料
型号: IP-POSPHY4
厂商: Altera
文件页数: 73/144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
5. Functional Description—Transmitter
The POS-PHY Level 4 MegaCore ? function consists of the main SPI-4.2 processing
logic, and one of two first-in first-out (FIFO) buffer options: a single shared buffer
with embedded addressing and support for external scheduling, or an individual
buffer for each port including a full scheduler.
When the POS-PHY Level 4 MegaCore function is configured as a transmitter, data
flows from the Atlantic ? interface to the SPI-4.2 interface.
Features
Sends data packets on the SPI-4.2 interface
Inserts control words
Generates DIP-4
Inserts training sequence
Manages the FIFO buffer status
Block Description
Figure 5–1 on page 5–1 shows the blocks and clocks that comprise the transmitter
MegaCore function.
Figure 5–1. Block Diagram—Transmitter (Note 1) and (2)
tdint_clk
tdclk
SPI4.2
Interface
trefclk
tsclk
Parallel-to-Serial
Con v erter
Status PHY
Data
Processor
Status FSM
Scheduler
( Note 2 )
Scheduler
FIFO Buffer
Atlantic
Buffer 0
Atlantic
Buffer N
( Note 2 )
Atlantic
Interface 0
Atlantic
Interface N
Status
Register
User FIFO
Buffer
txsys_clk
ra v _clk
Notes to Figure 5–1 :
(1) The dotted lines illustrate the clock domain separations.
(2) These blocks and signals are only present when the individual buffers mode is selected.
May 2013
Altera Corporation
POS-PHY Level 4 MegaCore Function User Guide
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