cx82100 Conexant Systems, Inc., cx82100 Datasheet - Page 4

• Manufacturer Part Number: cx82100
• Description: Home Network Processor Hnp
• Manufacturer: Conexant Systems, Inc.

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CX82100 HNP Hardware Interface ....................................................................................................... 2-1
2.1
2.2
2.3
2.4
2.5
HNP Memory Architecture ................................................................................................................... 3-1
3.1
3.2
3.3
3.4
DMAC Interface Description................................................................................................................. 4-1
4.1
4.2
4.3
4.4
4.5
4.6
CX82100 HNP Hardware Interface Signals ..................................................................................................................2-1
2.1.1
2.1.2
2.1.3
CX82100 HNP Electrical and Environmental Specifications........................................................................................2-17
2.2.1
2.2.2
Optional GPIO and Host Signal Usage .......................................................................................................................2-19
Interface Timing and Waveforms...............................................................................................................................2-21
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.4.6
2.4.7
2.4.8
Package Dimensions .................................................................................................................................................2-23
HNP Memory Map.......................................................................................................................................................3-1
Starting Addresses ......................................................................................................................................................3-3
3.2.1
Endianness..................................................................................................................................................................3-4
Boot Procedure ...........................................................................................................................................................3-4
DMA Channel Definition ..............................................................................................................................................4-1
DMA Requests and Data Transfer................................................................................................................................4-1
Control Registers ........................................................................................................................................................4-2
DMAC Register Memory Map ......................................................................................................................................4-3
Control Register Formats.............................................................................................................................................4-4
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
Three Basic Modes of Address Generation ..................................................................................................................4-6
4.6.1
4.6.2
4.6.3
CX82100-11/-12/-51/-52 Signal Interface and Pin Assignments ..................................................................2-1
CX82100-41/-42 Signal Interface and Pin Assignments...............................................................................2-1
CX82100 HNP Signal Definitions .................................................................................................................2-1
DC Electrical Characteristics ......................................................................................................................2-17
Operating Conditions, Absolute Maximum Ratings, and Power Consumption............................................2-18
External Memory Interface (SDRAM).........................................................................................................2-21
Host Interface Timing ................................................................................................................................2-21
EMAC Interface Timing ..............................................................................................................................2-21
USB Interface Timing.................................................................................................................................2-21
GPIO Interface Timing ...............................................................................................................................2-21
Interrupt Timing ........................................................................................................................................2-22
Clock Reset Timing....................................................................................................................................2-22
Reset Timing .............................................................................................................................................2-22
ARM Vector Table........................................................................................................................................3-3
DMAC x Current Pointer 1 (DMAC_{x}_Ptr1) ...............................................................................................4-4
DMAC x Indirect/Return Pointer 1 (DMAC_{x}_Ptr2)....................................................................................4-4
DMAC x Buffer Size Counter 1 (DMAC_{x}_Cnt1).........................................................................................4-4
DMAC x Buffer Size Counter 2 (DMAC_{x}_Cnt2).........................................................................................4-4
DMAC x Buffer Size Counter 3 (DMAC_{x}_Cnt3).........................................................................................4-5
Source or Destination Mode ........................................................................................................................4-6
Circular Buffer Modes..................................................................................................................................4-6
Linked List Mode .........................................................................................................................................4-9
Direct Circular Buffer ...........................................................................................................................4-6
Indirect Circular Pointer Table..............................................................................................................4-7
Embedded Tail Linked List Descriptor Mode ........................................................................................4-9
Indirect/Table Linked List Descriptor Mode........................................................................................4-12
Conexant Proprietary and Confidential Information
CX82100 Home Network Processor Data Sheet
101306C