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參數(shù)資料
| 型號： | XR16M2651IM48-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 28/51頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART FIFO 32B DUAL 48TQFP |
| 標準包裝： | 250 |
| 特點： | * |
| 通道數(shù)： | 2，DUART |
| FIFO's： | 32 字節(jié) |
| 規(guī)程： | RS232，RS422 |
| 電源電壓： | 1.62 V ~ 3.63 V |
| 帶自動流量控制功能： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動位檢測功能： | 是 |
| 帶調制解調器控制功能： | 是 |
| 帶CMOS： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP |
| 供應商設備封裝： | 48-TQFP（7x7） |
| 包裝： | 托盤 |
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XR16M2651
34
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE
REV. 1.0.2
MSR[3]: Delta CD# Input Flag
Logic 0 = No change on CD# input (default).
Logic 1 = Indicates that the CD# input has changed state since the last time it was monitored. A modem
status interrupt will be generated if MSR interrupt is enabled (IER bit-3).
MSR[4]: CTS Input Status
CTS# pin may function as automatic hardware flow control signal input if it is enabled and selected by Auto
CTS (EFR bit-7). Auto CTS flow control allows starting and stopping of local data transmissions based on the
modem CTS# signal. A HIGH on the CTS# pin will stop UART transmitter as soon as the current character has
finished transmission, and a LOW will resume data transmission. Normally MSR bit-4 bit is the complement of
the CTS# input. However in the loopback mode, this bit is equivalent to the RTS# bit in the MCR register. The
CTS# input may be used as a general purpose input when the modem interface is not used.
MSR[5]: DSR Input Status
Normally this bit is the complement of the DSR# input. In the loopback mode, this bit is equivalent to the DTR#
bit in the MCR register. The DSR# input may be used as a general purpose input when the modem interface is
not used.
MSR[6]: RI Input Status
Normally this bit is the complement of the RI# input. In the loopback mode this bit is equivalent to bit-2 in the
MCR register. The RI# input may be used as a general purpose input when the modem interface is not used.
MSR[7]: CD Input Status
Normally this bit is the complement of the CD# input. In the loopback mode this bit is equivalent to bit-3 in the
MCR register. The CD# input may be used as a general purpose input when the modem interface is not used.
4.10
Scratch Pad Register (SPR) - Read/Write
This is a 8-bit general purpose register for the user to store temporary data. The content of this register is
preserved during sleep mode but becomes 0xFF (default) after a reset or a power off-on cycle.
4.11
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[3:0]/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
DLD[5:4]: Sampling Rate Select
These bits select the data sampling rate. By default, the data sampling rate is 16X. The maximum data rate will
double if the 8X mode is selected and will quadruple if the 4X mode is selected. See Table 14 below.
DLD[7:6]: Reserved
4.12
Device Identification Register (DVID) - Read Only
This register contains the device ID (0x06 for XR16M2651). Prior to reading this register, DLL and DLM should
be set to 0x00 (DLD = 0xXX).
TABLE 14: SAMPLING RATE SELECT
DLD[5]
DLD[4]
SAMPLING RATE
0
16X
0
1
8X
1
X
4X
相關PDF資料 |
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| XR16M2750IM48-F | IC UART FIFO 64B DUAL 48TQFP |
| XR16M2751IM48-F | IC UART FIFO 64B DUAL 48TQFP |
| XR16M2752IJ44-F | IC UART FIFO 64B DUAL 44PLCC |
| XR16M554IV64-F | IC UART FIFO 16B QUAD 64LQFP |
| XR16M564IJ68-F | IC UART FIFO 32B QUAD 68PLCC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XR16M2651IM48TR-F | 制造商:Exar Corporation 功能描述:UART 2-CH 32Byte FIFO 1.8V/2.5V/3.3V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:XR16M2651IM48TR-F |
| XR16M2750 | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO |
| XR16M2750IL-0A-EB | 功能描述:界面開發(fā)工具 Eval Board for XR16M2750IL-0A RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| XR16M2750IL-0B-EB | 功能描述:界面開發(fā)工具 Eval Board for XR16M2750IL Series RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| XR16M2750IL32 | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 64-BYTE FIFO |
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