參數(shù)資料
型號: XR88C681P/40-F
廠商: Exar Corporation
文件頁數(shù): 90/101頁
文件大小: 0K
描述: IC UART CMOS DUAL 40PDIP
標準包裝: 9
特點: *
通道數(shù): 2,DUART
FIFO's: 1 字節(jié),3 字節(jié)
電源電壓: 4.75 V ~ 5.25 V
帶并行端口:
帶CMOS:
安裝類型: 通孔
封裝/外殼: 40-DIP(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 40-PDIP
包裝: 管件
其它名稱: 1016-1640
XR88C681P/40-F-ND
XR88C681
89
Rev. 2.11
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
00 = Normal
01 = Auto Echo
10 = Local Loop
11 = Remote Loop
0 = No
1 = Yes
0 = No
1 = Yes
0h = 0.563
1h = 0.625
2h = 0.688
3h = 0.750
4h = 0.813
5h = 0.875
6h = 0.938
7h = 1.000
8h = 1.563
9h = 1.625
Ah = 1.688
Bh = 1.750
Ch = 1.813
Dh = 1.875
Eh = 1.938
Fh = 2.000
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
See
Table 9
See
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
See Text in
Section B.2.
00 = No Change
01 = Enable Tx
10 = Disable Tx
11 = Not Allowed
(Do Not Use)
00 = No Change
01 = Enable Tx
10 = Disable Tx
11 = Not Allowed
(Do Not Use)
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
0 = No
1 = Yes
0 = No
1 = Yes
0 = No
1 = Yes
0 = No
1 = Yes
0 = No
1 = Yes
0 = No
1 = Yes
0 = No
1 = Yes
0 = No
1 = Yes
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
0=OPR[7]
1=TXRDYB
0=OPR[6]
1=TXRDYA
0=OPR[5]
1=RXRDY/
FFULLB
0=OPR[4]
1=RXRDY/
FFULLA
00 = OPR[3]
01 = C/T #1 Output
10 = TXCB (1X)
11 = RXCB (1X)
00 = OPR[2]
01 = TXCA (16X)
10 = TXCA (1X)
11 = RXCA (1X)
Table 34. Output Port Configuration Register: OPCR
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