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MCIMX253DVM4 Datasheet(PDF) 6 Page - Freescale Semiconductor, Inc |
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MCIMX253DVM4 Datasheet(HTML) 6 Page - Freescale Semiconductor, Inc |
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6 / 132 page  i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 2 6 Freescale Semiconductor EPIT(2) Enhanced periodic interrupt timer Timer peripherals Each enhanced periodic interrupt timer (EPIT) is a 32-bit set-and-forget timer that starts counting after the EPIT is enabled by software. It is capable of providing precise interrupts at regular intervals with minimal processor intervention. It has a 12-bit prescaler to adjust the input clock frequency to the required time setting for the interrupts, and the counter value can be programmed on the fly. ESAI Enhanced serial audio interface Connectivity peripherals ESAI provides a full-duplex serial port for serial communication with a variety of serial devices, including industry-standard codecs, SPDIF transceivers, and other DSPs. The ESAI consists of independent transmitter and receiver sections, each section with its own clock generator. eSDHC(2) Enhanced multimedia card/ secure digital host controller Connectivity peripherals The features of the eSDHC module, when serving as host, include the following: • Conforms to the SD host controller standard specification version 2.0 • Compatible with the JEDEC MMC system specification version 4.2 • Compatible with the SD memory card specification version 2.0 • Compatible with the SDIO specification version 1.2 • Designed to work with SD memory, miniSD memory, SDIO, miniSDIO, SD combo, MMC and MMC RS cards • Configurable to work in one of the following modes: —SD/SDIO 1-bit, 4-bit —MMC 1-bit, 4-bit, 8-bit • Full-/high-speed mode • Host clock frequency variable between 32 kHz and 52 MHz • Up to 200-Mbps data transfer for SD/SDIO cards using four parallel data lines • Up to 416-Mbps data transfer for MMC cards using eight parallel data lines FEC Fast ethernet controller Connectivity peripherals The Ethernet media access controller (MAC) is designed to support both 10- and 100-Mbps Ethernet networks compliant with IEEE 802.3® standard. An external transceiver interface and transceiver function are required to complete the interface to the media FlexCAN(2) Controller area network module Connectivity peripherals The controller area network (CAN) protocol is primarily designed to be used as a vehicle serial data bus running at 1 MBps. GPIO(4) General purpose I/O modules System control peripherals Used for general purpose input/output to external ICs. Each GPIO module supports 32 bits of I/O. GPT(4) General purpose timers Timer peripherals Each GPT is a 32-bit free-running or set-and-forget mode timer with programmable prescaler and compare and capture register. A timer counter value can be captured using an external event and can be configured to trigger a capture event on either the leading or trailing edges of an input pulse. When the timer is configured to operate in set-and-forget mode, it is capable of providing precise interrupts at regular intervals with minimal processor intervention. The counter has output compare logic to provide the status and interrupt at comparison. This timer can be configured to run either on an external clock or on an internal clock. Table 2. i.MX25 Digital and Analog Modules (continued) Block Mnemonic Block Name Subsystem Brief Description |
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