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I.MX27 Datasheet(PDF) 6 Page - Freescale Semiconductor, Inc |
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I.MX27 Datasheet(HTML) 6 Page - Freescale Semiconductor, Inc |
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6 / 148 page  i.MX27 and i.MX27L Data Sheet, Rev. 1.5 6 Freescale Semiconductor Functional Description and Application Information ATA Advanced Technology (AT) Attachment Connectivity Peripheral The ATA block is an AT attachment host interface. It interfaces with IDE hard disc drives and ATAPI optical disc drives. 2.3.5/11 AUDMUX Digital Audio Multiplexer Multimedia Peripheral The AUDMUX interconnections allow multiple, simultaneous audio/voice/data flows between the ports in point-to-point or point-to-multipoint configurations. 2.3.6/11 CRM Clock and Reset Module Clock and Reset Control The CRM generates clock and reset signals used throughout the i.MX27/MX27L processors and also for external peripherals. 2.3.7/12 CSI CMOS Sensor Interface Multimedia Interface The CSI is a logic interface which enables the i.MX27/MX27L processors to connect directly to external CMOS sensors and a CCIR656 video source. 2.3.8/12 CSPI Configurable Serial Peripheral Interface (x3) Connectivity Peripheral The i.MX27/MX27L processors have three CSPI modules. CSPI is equipped with two data FIFOs and is a master/slave configurable serial peripheral interface module, allowing the i.MX27/MX27L processors to interface with both external SPI master and slave devices. 2.3.9/13 DMAC Direct Memory Access Controller Standard System Resource The DMAC of the i.MX27/MX27L processors provides 16 channels supporting linear memory, 2D memory, FIFO and end-of-burst enable FIFO transfers to support a wide variety of DMA operations. 2.3.10/13 eMMA_lt eMMA_lt H/W Accelerator Functions eMMA_lt consists of a PreProcessor and PostProcessor, and provides video acceleration. The PrP and PP can be used for generic video pre and post processing such as scaling, resizing, and color space conversions. 2.3.11/13 EMI External Memory Interface Memory Interface (EMI) The EMI includes • Multi-Master Memory Interface (M3IF) • Enhanced SDRAM/MDDR memory controller (ESDRAMC) • PCMCIA memory controller (PCMCIA) • NAND Flash Controller (NFC) • Wireless External Interface Module (WEIM) — ESDRAMC Enhanced SDRAM Controller External Memory Interface The ESDRAMC provides interface and control for synchronous DRAM memories for the system. 2.3.12/15 FEC Fast Ethernet Controller Connectivity Peripheral The FEC performs the full set of IEEE 802.3/Ethernet CSMA/CD media access control and channel interface functions. The FEC supports connection and functionality for the 10/100 Mbps 802.3 media independent interface (MII). It requires an external transceiver (PHY) to complete the interface to the media. 2.3.13/15 GPIO General Purpose I/O Module Pins The GPIO provides 32 bits of bidirectional, general purpose I/O. This peripheral provides dedicated general-purpose pins that can be configured as either inputs or outputs. 2.3.14/16 GPT General Purpose Timer Timer Peripheral The GPT is a multipurpose module used to measure intervals or generate periodic output. 2.3.15/16 Table 2. Digital and Analog Modules (continued) Block Mnemonic Block Name Functional Grouping Brief Description Section/ Page |
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