REV. 1.2.2 UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART 25 4.1.2 Special Rx FIFO Data Unloading at locations 0x180, 0x380, 0x580, and " />
參數(shù)資料
型號： XR17D154CV-0A-EVB
廠商： Exar Corporation
文件頁數(shù)： 18/69頁
文件大?。?/td> 0K
描述： EVAL BOARD FOR XR17D154 144TQFP
標(biāo)準(zhǔn)包裝： 1
系列： *
xr
XR17D154
REV. 1.2.2
UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
25
4.1.2
Special Rx FIFO Data Unloading at locations 0x180, 0x380, 0x580, and 0x780
The XR17D154 also provides the same RX FIFO data along with the LSR status information of each byte side-
by-side, at locations 0x180 (channel 0), 0x380 (channel 1), 0x580 (channel 2), and 0x780 (channel 3). The
entire RX data along with the status can be downloaded in a single PCI Burst Read operation of 32 DWORD
reads. The Status and Data bytes must be read in 16 or 32 bits format to maintain data integrity. The following
tables show this clearly.
READ RX FIFO,
WITH NO ERRORS
BYTE 3
BYTE 2
BYTE 1
BYTE 0
Read n+0 to n+3
FIFO Data n+3
FIFO Data n+2
FIFO Data n+1
FIFO Data n+0
Read n+4 to n+7
FIFO Data n+7
FIFO Data n+6
FIFO Data n+5
FIFO Data n+4
Etc.
READ RX FIFO,
WITH LSR
ERRORS
BYTE 3
BYTE 2
BYTE 1
BYTE 0
Read n+0 to n+1
FIFO Data n+1
LSR n+1
FIFO Data n+0
LSR n+0
Read n+2 to n+3
FIFO Data n+3
LSR n+3
FIFO Data n+2
LSR n+2
Etc
PCI Bus
Data Bit-31
B7 B6 B5 B4 B3 B2 B1 B0
Receive Data Byte n+3
Receive Data Byte n+2
Receive Data Byte n+1
Receive Data Byte n+0
PCI Bus
Data Bit-0
Channel 0 to 3 ReceiveData in 32-bit alignment through the Configuration Register Address
0x0100, 0x0300, 0x0500 and 0x0700
PCI Bus
Data Bit-31
B7 B6 B5 B4 B3 B2 B1 B0
Receive Data Byte n+1
Line Status Register n+1
Receive Data Byte n+0
Line Status Register n+0
PCI Bus
Data Bit-0
Channel 0 to 1 Receive Data with Line Status Register in a 32-bit alignment through
the Configuration Register Address 0x0180 and 0x0380
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17D154CV-F 功能描述:UART 接口集成電路 3.3V-5V 64B FIFO temp 0C to 70C; UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR17D154CVTR-F 制造商:Exar Corporation 功能描述:UART 4-CH 64Byte FIFO 3.3V/5V 144-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XR17D154CVTR-F
XR17D154IV 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR17D154IV-F 功能描述:UART 接口集成電路 3.3V-5V 64B FIFO temp -45 to 85C;UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR17D154IVTR-F 制造商:Exar Corporation 功能描述:UART 4-CH 64Byte FIFO 3.3V/5V 144-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XR17D154IVTR-F
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