CXD1947Q

www.DataSheet4U.com PRELIMINARY IEEE1394 LINK Layer / PCI Bridge LSI 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 multiple 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 Block Diagram ITDMA ALIGN ITF CXD1947Q 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 Operating temperature range Topr –20 to +75 V °C ATDMA MBIU PCI BUS PCI INF RDMA ALIGN ATF RF ALIGN LINK CORE PHY IRDMA 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 www.DataSheet4U.com ALIGN: ITF: ATF: RF: SSN INF: Data Aligner Isochronous Transmit FIFO Asynchronous Trans...