CD2481 Datasheet, PDF (217/222 Pages) Intel Corporation – Programmable Four-Channel Communications Controller

Index
A
abbreviations 13
absolute maximum ratings 201, 203
AC electrical characteristics
bus arbitration 202, 205
DMA read 202, 205
DMA write 202, 205
host read/write 202, 205
interrupt acknowledge 203, 206
Addressing mode 114
Append mode 58
Async-HDLC/PPP mode 127, 151, 156
Async-HDLC/PPP/MNP4 mode 169
Asynchronous DMA mode 59
Asynchronous mode 26, 118, 125, 155, 167
Asynchronous/Async-HDLC/PPP mode 118,
120
bus acquisition 46, 47
hardware signals and IACK 42
host read 38
host read and write 37
host write 39
interrupt acknowledge 41
D
data clock selection 67
data encoding 60, 66
DC electrical characteristics 201, 204
DMA data transfer 46
DMA operation 45
DMA read 202, 205
DMA write 202, 205
DPLL mode 145
DPLL operation 60
B
Bisync 92
Bisynchronous mode 117, 124, 154
bit rate generation 60
BRG operation 60
buffer allocation 55
buffers and chaining 48
bus acquisition cycle 46, 47
bus arbitration 202, 205
bus error handling 47
byte and word transfers 39
C
character format 77
CLK 206
CLK/BUSCLK/RESET* Timing Relation-
ship 206
contexts and channels 40
cycles
E
electrical specifications 201
F
Fair Share scheme 43
FCS (frame check sequence) 75
FCS mode 124
FCT (flow control transparency) mode 126,
138
fields, A and C 77
FIFO and timer operations 44
format
character 77
frame 77
frame check sequence (FCS) 75
frame format 77
functional description 37
Datasheet
217