CXD1947Q Datasheet, PDF (1/4 Pages) Sony Corporation – IEEE1394 LINK Layer / PCI Bridge LSI

PRELIMINARY
IEEE1394 LINK Layer / PCI Bridge LSI
CXD1947Q
Overview
The CXD1947Q is a single-chip implementation of the
link layer protocol of the 1394 Serial Bus, with additional
features to support the transaction and bus management
layers.
The CXD1947Q includes a PCI bus interface and mul-
tiple DMA engines to enable high performance bus
transfers.
Features
• 1394 Link Layer/PCI Bridge
• Conforms to IEEE1394 high speed Serial Bus
• Supports 100Mb/s and 200Mb/s 1394 bus speeds
• Conforms to PCI version 2.1 specification
• Supports 6 independent programmable DMA channels
— Asynchronous transmit (1)
— Asynchronous receive (1)
— Isochronous transmit (2)
— Isochronous receive (2)
• Three 128-word-deep FIFOs
— Asynchronous transmit
— Isochronous transmit
— Receive
160 pin QFP
• Includes interfaces to
— 1394 PHY interface (CXD1944 or equivalent)
— ROM (64K x 8)
— Silicon Serial ROM
• Supports big and little Endian data formats
Device Structure
Silicon gate CMOS IC
Recommended Operating Conditions
• Supply voltage
VDD 3.0 to 3.6 V
• Operating temperature range Topr –20 to +75 °C
Block Diagram
PCI BUS
PCI INF
MBIU
ITDMA
ATDMA
RDMA
IRDMA
ALIGN
ALIGN
ALIGN
ITF
ATF
RF
LINK
PHY
CORE
SSN INF
ROM INF
CNTL REG
MBIU: Master Bus Interface
ITDMA: Isochronous Transmit DMA
ATDMA: Asynchronous Transmit DMA
RDMA: Receive DMA
IRDMA: Isochronous Receive DMA
ALIGN:
ITF:
ATF:
RF:
SSN INF:
Data Aligner
Isochronous Transmit FIFO
Asynchronous Transmit FIFO
Receive FIFO
Silicon Serial Number
PHY:
ROM INF:
CNTL REG:
Link Layer/Physical Layer
1394 Interface
ROM Interface
Control Registers
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication
or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony
cannot assume responsibility for any problems arising out of the use of these circuits.
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10/18/96