CS4610 datasheet(12/29 Pages) CIRRUS

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DS241PP5

CS4610/11

CrystalClear™ SoundFusion™ PCI Audio Accelerator

The PCI bus transactions supported by the

CS4610/11 device are summarized in Table 1. Note

that no Target Abort conditions are signalled by the

device. Byte, Word, and Doubleword transfers are

supported for Configuration Space accesses. Only

Doubleword transfers are supported for Register or

Memory area accesses. Bursting is not supported

for host-initiated transfers to/from the CS4610/11

internal register space, RAM memory space, or

PCI configuration space (disconnect after first

phase of transaction is completed).

Initiator

Target

Type

PCI Dir

Host

Registers (BA0)

Mem Write

Host

Registers (BA0)

Mem Read

Out

Host

Memories (BA1)

Mem Write

Host

Memories (BA1)

Mem Read

Out

Host

Config Space 1

Config Write

Host

Config Space 1

Config Read

Out

DMA

Host System

Mem Write

Out

DMA

Host System

Mem Read

Table 1. CS4610/11 PCI Interface Transaction Summary

Device ID / Vendor ID

Status / Command

Class Code / Revision

Misc Control

Base Address Register 0

Base Address Register 1

Device PCI Config Space

00h

04h

08h

0Ch

10h

14h

Direct I/O Registers

(Memory Mapped, 4KB)

Direct Memory Interface

(Memory Mapped, 1KB)

Figure 8. CS4610/11 Host Interface Base Address Registers

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