CD2231 Intel Corporation, CD2231 Datasheet - Page 6

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CD2231

Manufacturer Part Number
CD2231
Description
CD2231 Intelligent Two-channel Lan And Wan Communications Controller
Manufacturer
Intel Corporation
Datasheet
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CD2231 — Intelligent Two-Channel LAN and WAN Communications Controller
9.0
10.0
11.0
Index
Bit Index
Figures
6
Electrical Specifications
9.1
9.2
9.3
Package Specifications
Ordering Information Example
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
....................................................................................................................................... 169
....................................................................................................................................... 175
Absolute Maximum Ratings .............................................................................. 156
DC Electrical Characteristics............................................................................. 156
AC Electrical Characteristics ............................................................................. 157
Functional Block Diagram ................................................................................... 11
Host Read Cycle ................................................................................................. 35
Host Write Cycle ................................................................................................. 36
Interrupt Acknowledge Cycle .............................................................................. 38
Bus Acquisition Cycle.......................................................................................... 44
Data Transfer Timing .......................................................................................... 44
Transmitter A and B Buffers................................................................................ 47
Receiver A and B Buffers.................................................................................... 50
DMA Transmit Buffer Selection........................................................................... 54
Bit Rate Generator/DPLL .................................................................................... 59
Data Encoding..................................................................................................... 63
Transmit Data With External Clock In ................................................................. 63
Transmit Data With External Clock Out .............................................................. 63
DMA Connections for the CD2231...................................................................... 65
Character Format ................................................................................................ 69
Point-to-Point Protocol Frame............................................................................. 69
ARAP 1.0 Frame ................................................................................................. 74
ARAP 2.0 Frame ................................................................................................. 75
CD2231 Receive Character Processing ............................................................. 81
Initialization Sequence for the CD2231............................................................... 84
CLK / BUSCLK / RESET* TIming Relationship................................................. 159
Slave Read Cycle Timing.................................................................................. 160
Slave Write Cycle Timing .................................................................................. 161
Interrupt Acknowledge Cycle Timing................................................................. 162
Bus Arbitration Cycle Timing............................................................................. 163
Bus Release Timing .......................................................................................... 164
DMA Read Cycle Timing................................................................................... 165
DMA Write Cycle Timing ................................................................................... 166
....................................................................................... 167
...................................................................................... 156
......................................................................... 168
Datasheet

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