參數(shù)資料
型號(hào): XR88C681
廠商: Exar Corporation
英文描述: CMOS DUAL CHANNEL UART (DUART)
中文描述: CMOS雙通道UART(杜阿爾特)
文件頁(yè)數(shù): 88/99頁(yè)
文件大?。?/td> 1913K
代理商: XR88C681
XR88C681
==
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Channel Mode
Tx RTS
Control
CTS Enable
Tx
Stop Bit Length
J 7
J 2'
J 9' 9
J 9
J 7
J G
J 7
J G
J 6/1
J /6
J /==
1 J >6
< J =1
6 J =>6
/ J 1=
> J
= J 6/1
J /6
J /==
* J >6
J =1
J =>6
2 J 1=
J
Table 30. Mode Register 2: MR2A, MR2B
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Receiver Clock Select
Transmitter Clock Select
Table 9
Table 9
Table 31. Clock Select Registers: CSRA, CSRB
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Miscellaneous Commands
Enable/Disable Tx
Enable/Disable Rx
! (
Section B.2
J 7 -
J 2 !
J (% !
J 7 $
7 %
J 7 -
J 2 !
J (% !
J 7 $
7 %
Table 32. Command Registers: CRA, CRB
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Received
Break
Framing
Error
Parity Error
Overrun
Error
TXEMT
TXRDY
FFULL
RXRDY
J 7
J G
J 7
J G
J 7
J G
J 7
J G
J 7
J G
J 7
J G
J 7
J G
J 7
J G
Table 33. Status Registers: SRA, SRB
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
OP7
OP6
OP5
OP4
OP3
OP2
J,N>O
J5G*
J,N/O
J5G
J,N6O
J5G.
99*
J,N<O
J5G.
99
J ,N1O
J . S
J 5* 5
J 5* 5
J ,NO
J 5 /5
J 5 5
J 5 5
Table 34. Output Port Configuration Register: OPCR
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