- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376452 > XR-88C681 (Exar Corporation) () PDF資料下載
參數(shù)資料
| 型號： | XR-88C681 |
| 廠商： | Exar Corporation |
| 英文描述： | () |
| 中文描述： | （） |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 64K |
| 代理商： | XR-88C681 |
TAN - 011
A Comparison between Exar’s XR-88C681 and Motorola’s MC2681 DUART Devices
Table 2, Register Addressing of “Write Mode” Registers for both the XR-88C681
and the MC2681 devices
DUART Address Bits
A3
A2
0
0
DUART Devices/Write Mode Registers
XR-88C681
Mode Registers, Channel A
(MR1A, MR2A)
Clock Select Register, Channel
A (CSRA)
Command Register, Channel A
(CRA)
Transmitter Holding Register,
Channel A (THRA)
Auxiliary Control Register,
(ACR)
Interrupt Mask Register,
(IMR)
Counter/Timer Upper Byte
Register (CTUR)
Counter/Timer Lower Byte
Register (CTLR)
Mode Registers, Channel B
(MR1B, MR2B)
Clock Select Register, Channel
B, (CSRB)
Command Register, Channel B
(CRB)
Transmitter Holding Register,
Channel B (THRB)
Interrupt Vector Register
(IVR)
Output Port Configuration
Register (OPCR)
Set Output Port Bits
Command
Clear Output Port Bits
Command
Note: Differences between these two devices are in Bold-Italics
Shaded boxes denote “Address Triggered” Commands.
A1
0
A0
0
MC2681
Mode Registers, Channel A
(MR1A, MR2A)
Clock Select Register, Channel
A (CSRA)
Command Register, Channel A
(CRA)
Transmitter Holding Register,
Channel A (THRA)
Auxiliary Control Register,
(ACR)
Interrupt Mask Register,
(IMR)
Counter/Timer Upper Byte
Register (CTUR)
Counter/Timer Lower Byte
Register (CTLR)
Mode Registers, Channel B
(MR1B, MR2B)
Clock Select Register, Channel
B, (CSRB)
Command Register, Channel B
(CRB)
Transmitter Holding Register,
Channel B (THRB)
Do Not Access
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
Output Port Configuration
Register (OPCR)
Set Output Port Bits
Command
Clear Output Port Bits
Command
1
1
1
0
1
1
1
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XR-L567 | Micropower Tone Decoder |
| XR-T3588CP | V.35 Interface Receiver/Transmitter |
| XR-T3589 | V.35 Interface Receiver/Transmitter |
| XR-T3589CN | V.35 Interface Receiver/Transmitter |
| XR-T3588-89ES | XR-T3588/89 Evaluation System |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR-88C681/24CN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UART |
| XR-88C681/24N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UART |
| XR-88C681/28CN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UART |
| XR-88C681/28CP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UART |
| XR-88C681/28M | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UART |
發(fā)布緊急采購，3分鐘左右您將得到回復。