CD1865 Datasheet, PDF (95/150 Pages) Intel Corporation – Intelligent Eight-Channel Communications Controller

Intelligent Eight-Channel Communications Controller — CD1865
Name
Description
Access
Binary
Address
Default
Value
Hex
Address
(8 bit)¹
Hex
Address
(Intel^)²
Hex
Address
(Motorola^∗)³
Page
Channel Registers
SRER Enable Register
R/W
000
0010
0
$02
$04
CCR
Channel Command Register
R/W
000
0001
0
$01
$02
COR1 Channel Option Register 1
R/W 000 0011
0
$03
$06
COR2 Channel Option Register 2
R/W
000
0100
0
$04
$08
COR3 Channel Option Register 3
R/W
000
0101
0
$05
$0A
CCSR Channel Control Status Register
R 000 0110 0
$06
$0C
RBR
Receiver Bit Register
R
011 0011 21
$33
$66
RTPR Receive Time-Out Period Register
R/W
001
1000
5
$18
$30
RBPRH
Receive Bit Rate Period Register
High
R/W 011 0001
0
$31
$62
RBPRL
Receive Bit Rate Period Register
Low
R/W 011 0010
0
$32
$64
TBPRH
Transmit Bit Rate Period Register
High
R/W 011 1001
0
$39
$72
TBPRL
Transmit Bit Rate Period Register
Low
R/W 011 1010
0
$3A
$74
SCHR1 Special Character Register 1
R/W
000
1001
0
$09
$12
SCHR2 Special Character Register 2
R/W
000
1010
0
$0A
$14
SCHR3 Special Character Register 3
R/W 000 1011 0
$0B
$16
SCHR4 Special Character Register 4
R/W 000 1100 0
$0C
$18
MCR
Modem Change Register
R/W
001
0010
0
$12
$24
MCOR1 Modem Change Option Register 1
R/W
001
0000
0
$10
$20
MCOR2 Modem Change Option Register 2
R/W
001
0001
0
$11
$22
MSVR Modem Signal Value Register
R/W
010
1000
0
$28
$50
MSVRS
Modem Signal Value Request To
Send
W
010
1000
0
$29
$52
MSVDR
Modem Signal Value Data Terminal
Ready
W
010
1010
0
$2A
$54
NOTES:
1. Hex address for 8-bit processor.
2. Address for Intel-style processor, see the following description.
3. Address for Motorola-style processor, see the following description.
4. $ denotes address value.
$05
112
$03
112
$07
116
$09
116
$0B
117
$0D
118
$67
119
$31
120
$63
120
$65
120
$73
121
$75
121
$13
121
$15
122
$17
122
$19
123
$25
123
$21
124
$23
125
$51
125
$53
126
$55
126
Datasheet
95