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參數(shù)資料
| 型號(hào)： | XR19L222IL64-0B-EB |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 30/53頁 |
| 文件大?。?/td> | 0K |
| 描述： | EVAL BOARD FOR XR19L202 64QFN |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | * |
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XR19L222
36
TWO CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER
REV. 1.0.1
EMSR[6]: LSR Interrupt Mode
Logic 0 = LSR Interrupt Delayed (for 16C2550 compatibility, default). LSR bits 2, 3, and 4 will generate an
interrupt when the character with the error is in the RHR.
Logic 1 = LSR Interrupt Immediate. LSR bits 2, 3, and 4 will generate an interrupt as soon as the character is
received into the FIFO.
EMSR[7]: 16X Sampling Rate Mode
Logic 0 = 8X Sampling Rate.
Logic 1 = 16X Sampling Rate (default).
4.12
FIFO Level Register (FLVL) - Read-Only
The FIFO Level Register replaces the Scratchpad Register (during a Read) when FCTR[6] = 1. Note that this is
not identical to the FIFO Data Count Register which can be accessed when LCR = 0xBF.
FLVL[7:0]: FIFO Level Register
This register provides the FIFO counter level for the RX FIFO or the TX FIFO or both depending on EMSR[1:0].
See Table 12 for details.
4.13
Baud Rate Generator Registers (DLL, DLM and DLD) - Read/Write
These registers make-up the value of the baud rate divisor. The concatenation of the contents of DLM and
DLL is a 16-bit value is then added to DLD/16 to achieve the fractional baud rate divisor. DLD must be enabled
via EFR bit-4 before it can be accessed. SEE ”PROGRAMMABLE BAUD RATE GENERATOR WITH
4.14
Device Identification Register (DVID) - Read Only
This register contains the device ID (0x0A). Prior to reading this register, DLL and DLM should be set to 0x00
(DLD = 0xXX).
4.15
Device Revision Register (DREV) - Read Only
This register contains the device revision information. For example, 0x01 means revision A. Prior to reading
this register, DLL and DLM should be set to 0x00 (DLD = 0xXX).
4.16
Trigger Level Register (TRG) - Write-Only
User Programmable Transmit/Receive Trigger Level Register. If both the TX and RX trigger levels are used,
the TX trigger levels must be set before the RX trigger levels.
1
0
1
0
1
0
1
±40
±44
±48
±52
1
0
1
0
1
0
1
±12
±20
±28
±36
TABLE 13: AUTO RTS HYSTERESIS
EMSR
BIT-5
EMSR
BIT-4
FCTR
BIT-1
FCTR
BIT-0
RTS#
HYSTERESIS
(CHARACTERS)
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|---|---|
| XR19L222IL64-F | 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 |
| XR19L400 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER |
| XR19L400_09 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER |
| XR19L400IL40 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-485 TRANSCEIVER |
| XR19L400IL40-0B-EB | 功能描述:界面開發(fā)工具 Supports L400 40 pin QFN, PCI Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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