copyright ? by eureka technology inc. 4962 el camino real, los altos, ca 94022, usa tel: 1 650 960 3800 fax: 1 650 960 3805 http://www.eurekatech.com page 1 eureka technology ? compatible with sd/sdio specificatio n 2.0 with 1 and 4 bit data transfer ? option to support mmc 8-bit data width. ? support sd, spi and optional mmc bus protocol. ? support for both standard capacity and high capacity (sdhc) memory cards. ? supports high speed mode up to maximum transfer rate of 25mbyte/sec for sd and 50mbyte/sec for mmc. ? simple 32-bit bus master interface to dma data into user memory space. ? selectable maximum block size from 512 to 16kbytes. ? each io function includes up to 4096 bytes of data buffer. ? process most commands automatic ally without user interference. ? contains sd memory/sdio standard slave register set. ? supports multi-function sd cards, suspend and resume , read wait, block trans- fers, and sdio interrupts. ? password protection for sd cards. ? options for ahb, apb, wishbone, sh4 and generic user interface. ? options for interrupt-based user interface. features product summary EP560 sd/sdio/mmc slave controller command/ data shifter response command state machine data state machine data buffer registers cmd (sd connector) dt (sd connector shifter card status state machine user interface EP560 crc generation (one per function) block diagram
copyright ? by eureka technology inc. 4962 el camino real, los altos, ca 94022, usa tel: 1 650 960 3800 fax: 1 650 960 3805 http://www.eurekatech.com page 2 eureka technology descriptions the sd slave controller is designed to re side within an sd memory, sdio, or sd combo card. it serves as an interface be tween the sd bus and user logic that pro- vides the actual function of the card. it is designed to integrate with user logic to make various devices using the sd bus prot ocol, such as storage or wireless net- work card. the sd slave controller supports both 1 an d 4 bit sd interface (up to 8 bits in optional mmc support) and spi mode. data rate of up to 25mbyte/sec (200mbs) can be realized with sd interface. feat ures such as plug and play, auto-detection, error correction, write protection are standa rd with sd card interface and are sup- ported. as a slave device, the sd slave cont roller receives commands from the host through the sd interface. most of the co mmands are processed locally by the con- troller without any help from the user logi c. the majority of the standard sd reg- ister set is also implemente d within the slave controll er and process by the core without help from the user logic. in case of memory or io access that needs to be forwarded to the user logic, the slave controller handles all the sd bus pr otocol and presents the request to the user logic as simple read and write request through parallel address and data buses. burst transfer of up to 2048 byte s per transfer and user defined wait states are supported on the user interface to maximize data bandwidth. the slave con- troller also contains data buffer to ma tch the speed differences between the user interface and the sd interface. it allows a much more efficient use of the user interface. sd combo card and multi-function cards ar e supports by the EP560. with combo card and multi-function, one user interface is dedicated for each function so all functions can operate in parallel. the user interface of the EP560 core can operate either in dma mode or interrupt mode. in the normal dma mode, the EP560 is a bus master that transfers data between the user?s memory and the sd ho st. it functions like a dma controller under the control of the sd host. in th e optional interrupt mode, the communica- tion between the EP560 and the user logi c is interrupt driven. the EP560 asserts interrupt to the local cpu whenever it needs to access user memory. the main body of this data sheets describe the EP560 in dma mode and the interrupt mode is described in the appendix. with the EP560, sd card design can be re alized with very littl e development cost. the designer can add sd memory and sd io interface capability to the design by simply adding the EP560 modu le without changing the rest of the system architec- ture. EP560 sd/sdio/mmc slave controller
copyright ? by eureka technology inc. 4962 el camino real, los altos, ca 94022, usa tel: 1 650 960 3800 fax: 1 650 960 3805 http://www.eurekatech.com page 3 eureka technology application diagram EP560 sd slave controller memory subsystem or sd bus sd/mmc memory or sdio card EP560 sd slave controller memory subsystem or sd bus sd/mmc memory or sdio card interrupt local cpu EP560 in dma mode EP560 in interrupt mode user logic user logic EP560 sd/sdio/mmc slave controller
copyright ? by eureka technology inc. 4962 el camino real, los altos, ca 94022, usa tel: 1 650 960 3800 fax: 1 650 960 3805 http://www.eurekatech.com page 4 eureka technology optional features the EP560 standard core features a simp le generic user interface which can be connected easily into any design. eureka also offer the EP560 with ahb, apb, wishbone and sh4 bus interface. the EP560 can also come with interrupt mode interface to allow use logic to access EP560 as a slave device or in dma mode which allows the EP560 to access user logic. actel device utilization data family device utilization performance (-speed grade) seq comb total ram proasic3 a3p600-2 1099 5852 50% 2 49mhz axcelerator ax500-2 1098 3178 53% 2 56mhz igloo agl600v5 1009 5309 46% 2 31mhz fusion afs1500 1009 5240 16% 2 45mhz EP560 sd/sdio/mmc slave controller
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