CD1865 Datasheet, PDF (115/150 Pages) Intel Corporation – Intelligent Eight-Channel Communications Controller

Intelligent Eight-Channel Communications Controller — CD1865
Bit
Bit 5
Bits 4:3
Description
Send Special Character(s) Command, must be a ‘1’.
Must be a ‘0’.
Special Character Select
Bits 2:0
SSPC2
0
0
0
0
1
1
1
1
SSPC1
0
0
1
1
0
0
1
1
SSPC0
0
1
0
1
0
1
0
1
Function
Do not use
Send Special Character 1, or characters 1 and 3 in sequence if
COR3 [XonCH] defines a two-character
sequence.
Send Special Character 2, or characters 2 and 4 in
sequence if COR3 [XoffCH] defines a two-character
sequence.
Send Special Character 3
Send Special Character 4
Do not use
Do not use
Do not use
Channel Control Command
Bit 7
0
Bit 6
0
Bit 5
0
Bit 4
CHAN CTL
Bit 3
XMTR EN
Bit 2
XMTR DIS
Bit 1
RCVR EN
Bit 0
RCVR DIS
Bit
Bits 7:5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Must be a ‘0’.
Channel Control Command, must be a ‘1’.
Transmitter Enable
Transmitter Disable
Receiver Enable
Receiver Disable
Description
When turning the receiver or transmitter on or off, it is faster to simply enable and disable service
requests () rather than using the Channel Control Command.
Datasheet
115