CD2401 Intel, CD2401 Datasheet - Page 5
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CD2401
Manufacturer Part Number
CD2401
Description
Multi-protocol Communications Controller
Manufacturer
Intel
Datasheet
1.CD2401.pdf
(176 pages)
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9.0
Datasheet
8.3
8.4
8.5
8.6
8.7
Electrical Specifications
9.1
9.2
9.3
8.2.1
8.2.2
8.2.3
8.2.4
8.2.5
8.2.6
8.2.7
8.2.8
8.2.9
8.2.10 Special Character Range Register — Async Mode only ......................111
8.2.11 LNext Character Register (LNXT) — Async Mode only .......................111
8.2.12 Receive Frame Address Registers (RFAR) — HDLC Sync Mode only112
8.2.13 CRC Polynomial Select Register (CPSR) ............................................113
Bit Rate and Clock Option Registers.................................................................113
8.3.1
8.3.2
Channel Command and Status Registers .........................................................116
8.4.1
8.4.2
8.4.3
8.4.4
Interrupt Registers.............................................................................................124
8.5.1
8.5.2
8.5.3
8.5.4
DMA Registers ..................................................................................................141
8.6.1
8.6.2
8.6.3
8.6.4
8.6.5
Timer Registers .................................................................................................153
8.7.1
8.7.2
8.7.3
8.7.4
8.7.5
Absolute Maximum Ratings...............................................................................157
DC Electrical Characteristics.............................................................................157
AC Electrical Characteristics .............................................................................158
Channel Mode Register (CMR) ..............................................................93
Channel Option Register 1 (COR1)........................................................94
Channel Option Register 2 (COR2)........................................................96
Channel Option Register 3 (COR3)......................................................100
Channel Option Register 4 (COR4)......................................................104
Channel Option Register 5 (COR5)......................................................105
Channel Option Register 6 (COR6)......................................................106
Channel Option Register 7 (COR7) — Async Mode only.....................108
Special Character Registers — Async Mode only................................109
Receive Bit Rate Generator Registers .................................................113
Transmit Bit Rate Generator Registers ................................................115
Channel Command Register (CCR) .....................................................116
Special Transmit Command Register (STCR) .....................................119
Channel Status Register (CSR) ...........................................................119
Modem Signal Value Registers (MSVR) ..............................................123
General Interrupt Registers ..................................................................124
Receive Interrupt Registers..................................................................127
Transmit Interrupt Registers.................................................................135
Modem Interrupt Registers ...................................................................139
DMA Mode Register (DMR) .................................................................141
Bus Error Retry Count (BERCNT) Register .........................................142
DMA Buffer Status (DMABSTS) Register ............................................142
DMA Receive Registers .......................................................................143
DMA Transmit Registers ......................................................................148
Timer Period Register (TPR)................................................................153
Receive Timeout Period Register (RTPR) – Async Mode only ............153
General Timer 1 (GT1) Register – Sync Modes only ...........................154
General Timer 2 (GT2) Register — Sync Modes only..........................155
Transmit Timer Register (TTR) — Async Modes only..........................156
......................................................................................157
Multi-Protocol Communications Controller — CD2401
5
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