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參數(shù)資料
| 型號(hào)： | XR16L2552 |
| 廠商： | Exar Corporation |
| 英文描述： | 2.25V TO 5.5V DUART WITH 16-BYTE FIFO |
| 中文描述： | 2.25V至5.5V的杜阿爾特16字節(jié)FIFO |
| 文件頁數(shù)： | 32/47頁 |
| 文件大?。?/td> | 748K |
| 代理商： | XR16L2552 |
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XR16L2552
2.25V TO 5.5V DUART WITH 16-BYTE FIFO
xr
REV. 1.1.1
32
AFR[0]: Concurrent Write Mode
When this bit is set, the CPU can write concurrently to the same register in both UARTs. This function is
intended to reduce the dual UART initialization time. It can be used by the CPU when both channels are
initialized to the same state. The external CPU can set or clear this bit by accessing either register set. When
this bit is set, the channel select pin still selects the channel to be accessed during read operations. The user
should ensure that LCR Bit-7 of both channels are in the same state before executing a concurrent write to the
registers at address 0, 1, or 2.
Logic 0 = No concurrent write (default).
Logic 1 = Register set A and B are written concurrently with a single external CPU I/O write operation.
AFR[2:1]: MF# Output Select
These bits select a signal function for output on the MF# A/B pins. These signal function are described as:
OP2#, BAUDOUT#, or RXRDY#. Only one signal function can be selected at a time.
AFR[7:3]: Reserved
All are initialized to logic 0.
4.14
Device Identification Register (DVID) - Read Only
This register contains the device ID (0x02 for XR16L2552). Prior to reading this register, DLL and DLM should
be set to 0x00.
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.
4.16
Enhanced Feature Register (EFR)
Enhanced features are enabled or disabled using this register. Bit 0-3 provide single or dual consecutive
character software flow control selection (see
Table 12
). When the Xon1 and Xon2 and Xoff1 and Xoff2 modes
are selected, the double 8-bit words are concatenated into two sequential characters. Caution: note that
whenever changing the TX or RX flow control bits, always reset all bits back to logic 0 (disable) before
programming a new setting.
B
IT
-2
B
IT
-1
MF# F
UNCTION
0
0
OP2# (default)
0
1
BAUDOUT#
1
0
RXRDY#
1
1
Reserved
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XR16L2750CJ | 2.25V TO 5.5V DUART WITH 64-BYTE FIFO |
| XR16L2750CM | 2.25V TO 5.5V DUART WITH 64-BYTE FIFO |
| XR16L2750IJ | 2.25V TO 5.5V DUART WITH 64-BYTE FIFO |
| XR16L2750IM | 2.25V TO 5.5V DUART WITH 64-BYTE FIFO |
| XR16L2750 | 2.25V TO 5.5V DUART WITH 64-BYTE FIFO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR16L2552IJ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| XR16L2552IJ-0A-EB | 功能描述:UART 接口集成電路 Supports L2552 44 ld PLCC, ISA Interface 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 |
| XR16L2552IJ-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 |
| XR16L2552IJTR | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| XR16L2552IJTR-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 |
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