Altera Embedded Peripherals IP Uživatelský manuál Strana 90

  • Stažení
  • Přidat do mých příruček
  • Tisk
  • Strana
    / 336
  • Tabulka s obsahem
  • KNIHY
  • Hodnocené. / 5. Na základě hodnocení zákazníků
Zobrazit stránku 89
Table 9-7: DMA Sideband Signals
Pin Name Direction Description
dma_tx_ack_n Input TX DMA acknowledge
dma_rx_ack_n Input RX DMA acknowledge
dma_tx_req_n Output TX DMA request
dma_rx_req_n Output RX DMA request
dma_tx_single_n Output TX DMA single request
dma_rx_single_n Output RX DMA single request
General Architecture
Figure 9-1: Soft-UART High Level Architecture
TX Shifter
RX Shifter
TX Fifo
RX Fifo
CSR
Interface
DMA ControllerClock Generator
TX Flow Control RX Flow Control
16550 UART Core
Avalon MM
Slave Interface
Clock & Reset
RS -232 Serial
Interface
RS -232 Modem
Interface
DMA Handshaking
Interface
IRQ
The figure above shows the high level architecture of the UART IP. Both Transmit and Receive logic have
their own dedicated control & data path. An interrupt block and clock generator block is also present to
service both transmit and receive logic.
Configuration Parameters
The table below shows all the parameters that can be used to configure the UART. (_hw.tcl) is the
mechanism used to enforce and validate correct parameter settings.
Table 9-8: Configuration Parameters
Parameter Name Description Default
FIFO_MODE
1 = FIFO Mode Enabled
0 = FIFO Mode Disabled
1
9-4
General Architecture
UG-01085
2014.24.07
Altera Corporation
16550 UART
Send Feedback
Zobrazit stránku 89
1 2 ... 85 86 87 88 89 90 91 92 93 94 95 ... 335 336

Komentáře k této Příručce

Žádné komentáře