cx82100 Conexant Systems, Inc., cx82100 Datasheet - Page 5

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

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101306C
Host Interface Description ................................................................................................................... 5-1
5.1
5.2
5.3
External Memory Controller Interface Description ............................................................................... 6-1
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
Master Mode ...............................................................................................................................................................5-1
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
Host Master Mode Register Memory Map .................................................................................................................5-12
Host Master Mode Registers .....................................................................................................................................5-13
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.3.9
5.3.10
5.3.11
5.3.12
5.3.13
5.3.14
PC100 Compliant SDRAM Interface.............................................................................................................................6-1
Available Vendor SDRAM ICs and Features .................................................................................................................6-3
Supported Configurations............................................................................................................................................6-4
Access Cycles .............................................................................................................................................................6-4
Initialization.................................................................................................................................................................6-4
Refresh .......................................................................................................................................................................6-4
Read............................................................................................................................................................................6-5
Write ...........................................................................................................................................................................6-5
Throughput .................................................................................................................................................................6-5
EMC I/O Clock Interface and Timing ............................................................................................................................6-6
SRAM Interface ...........................................................................................................................................................6-7
EMC Register ..............................................................................................................................................................6-8
6.12.1
Host Master Mode Interface Signals ............................................................................................................5-1
Flash Memory Interface ...............................................................................................................................5-3
Interfacing to Other Slave Devices ...............................................................................................................5-3
Host Master Mode DMA Engine...................................................................................................................5-3
Host Master Mode Timing (CX82100-11/-12/-51/-52) .................................................................................5-5
Host Master Mode Timing (CX82100-41/-42)..............................................................................................5-8
Host Control Register (HST_CTRL: 0x002D0000)......................................................................................5-13
Host Master Mode Read-Wait-State Control Register (HST_RWST: 0x002D0004) ....................................5-14
Host Master Mode Write-Wait-State Control Register) (HST_WWST: 0x002D0008)..................................5-14
Host Master Mode Transfer Control Register (HST_XFER_CNTL: 0x002D000C)........................................5-14
Host Master Mode Read Control Register 1 (HST_READ_CNTL1: 0x002D0010) .......................................5-14
Host Master Mode Read Control Register 2 (HST_READ_CNTL2: 0x002D0014) .......................................5-15
Host Master Mode Write Control Register 1 (HST_WRITE_CNTL1: 0x002D0018) .....................................5-15
Host Master Mode Write Control Register 2 (HST_WRITE_CNTL2: 0x002D001C).....................................5-15
Host Master Mode Peripheral Size (MSTR_INTF_WIDTH: 0x002D0020) ...................................................5-15
Host Master Mode Peripheral Handshake (MSTR_HANDSHAKE: 0x002D0024) (CX82100-41/-42) ...........5-16
Host Master Mode DMA Source Address (HDMA_SRC_ADDR: 0x002D0028)...........................................5-16
Host Master Mode DMA Destination Address (HDMA_DST_ADDR: 0x002D002C) ....................................5-16
Host Master Mode DMA Byte Count (HDMA_BCNT: 0x002D0030) ............................................................5-16
Host Master Mode DMA Timers (HDMA_TIMERS: 0x002D0034) ..............................................................5-16
External Memory Control Register (EMCR: 0x00350010) ............................................................................6-8
Asynchronous DMA Transfer Mode .....................................................................................................5-3
Isochronous DMA Transfer Mode ........................................................................................................5-3
General DMA Information ....................................................................................................................5-4
Host Master Mode Read Operation (Accessing an External Device) .....................................................5-5
Host Master Mode Write Operation (Accessing an External Device) .....................................................5-5
Host Master Mode Read Operation (Accessing an External Device) .....................................................5-8
Host Master Mode Write Operation (Accessing an External Device) .....................................................5-8
HRDY# Description (CX82100-41/-42) ................................................................................................5-9
Conexant Proprietary and Confidential Information
CX82100 Home Network Processor Data Sheet
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