cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 200

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cx28500

Manufacturer Part Number
cx28500
Description
Cx28500 Multichannel Synchronous Communications Controller
Manufacturer
Mindspeed Technologies
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
cx28500-12
Manufacturer:
FUJ
Quantity:
250
Figure B-4
during the first cycle and 3 dwords transfer during the second cycle. The fast back-to-back feature is disabled. It
can be observed that the first cycle takes 5 PCLK cycles (with one PCLK post-data phase) and the second cycle of
transferring 3 dwords requires 6 PCLK cycles.
Figure B-4.
28500-DSH-002-C
GENERAL NOTE:
1. BEx means Byte Enable, where x is a numerical value between 1 and 8. For example, BE1 means byte one is enabled.
C/BE#[3:0]
C/BE#[7:4]
DEVSEL#
AD[63:32]
FRAME#
AD[31:0]
REQ64#
ACK64#
illustrates how CX28500 operates at 32-bit address-data and performs a burst read of 2 dwords transfer
TRDY#
PAR64
IRDY#
PAR
CLK
PCI Burst: Two 32-bit Transactions
Bus Cmd
Address
Back Transactions
Example of an Arbitration for Fast Back-to-Back and Non-Fast Back-to-
BE1
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Data1
Data2
BE2
Bus Cmd
Address
®
BE1
Data1
Data2
BE2
Data3
BE3
500052_045
185

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