参数资料
型号: XR17V354IB-E8-EVB
厂商: Exar Corporation
文件页数: 46/66页
文件大小: 0K
描述: EVAL BRD FOR XR17V354-E8 176BGA
产品培训模块: PCIe UARTs
标准包装: 1
主要目的: 接口,UART
嵌入式:
已用 IC / 零件: XR17V354
已供物品:
其它名称: 1016-1613
XR17V354IB-E8-EVB-ND
XR17V354
50
HIGH PERFORMANCE QUAD PCI-EXPRESS UART
REV. 1.0.3
FCR[3]: DMA Mode Select
This bit has no effect since TXRDY and RXRDY pins are not available in this device. It is provided for legacy
software compatibility.
Logic 0 = Set DMA to mode 0 (default).
Logic 1 = Set DMA to mode 1.
FCR[2]: TX FIFO Reset
This bit is only active when FCR bit [0] is active.
Logic 0= No transmit FIFO reset (default).
Logic 1 = Reset the transmit FIFO pointers and FIFO level counter logic (the transmit shift register is not
cleared or altered). This bit will return to a logic 0 after resetting the FIFO.
FCR[1]: RX FIFO Reset
This bit is only active when FCR bit [0] is active.
Logic 0 = No receive FIFO reset (default).
Logic 1 = Reset the receive FIFO pointers and FIFO level counter logic (the receive shift register is not
cleared or altered). This bit will return to a logic 0 after resetting the FIFO.
FCR[0]: TX and RX FIFO Enable
Logic 0 = Disable the transmit and receive FIFO (default).
Logic 1 = Enable the transmit and receive FIFOs. This bit must be set to logic 1 when other FCR bits are
written or they will not be programmed.
TABLE 16: TRANSMIT AND RECEIVE FIFO TRIGGER TABLE AND LEVEL SELECTION
TRIGGER
TABLE
FCTR
BIT [7]
FCTR
BIT [6]
FCR
BIT [7]
FCR
BIT [6]
FCR
BIT [5]
FCR
BIT [4]
RECEIVE
TRIGGER LEVEL
TRANSMIT
TRIGGER
LEVEL
COMPATIBILITY
Table-A
0
1
0
1
0
1
0
1 (default)
4
8
14
1 (default)
16C550, 16C2550,
16C2552, 16C554,
16C580, 16L580
Table-B
0
1
0
1
0
1
0
1
0
1
0
1
0
1
8
16
24
28
16
8
24
30
16C650A, 16L651
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