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| OTi Description Ours Technology Inc. OTI-6828 FLASH DISK CONTROLLER The flash disk controller (OTi_6828) is a disk controller used to make a linear flash device array look likes a normal disk, hiding the flash related problems with erasing. The OTi_6828 is a controller with USB interface. The USB interface is for full speed operation (12Mb/s). It conforms to USB Specification, Version 1.1. The USB transceiver is embedded in this controller. With stable slew-rate control, the controller reduces EMI. The OTi_6828 has a Phase Lock Loop (PLL) embedded. The PLL provides all clocks needed in this controller. It needs an externally provided clock operating in 14.318MHz. The OTi_6828 has integrated the regulator for 5V input and 3.3V output. It also supports voltage detector for power on reset. The OTi_6828 can control up to 4 pieces of NAND flash memory. The flash capacity can be 32M bits up to 1G bits. And these chips can be any combination. It has been optimized to support Toshiba and Samsung flash memory designs. It also supports Samsung's K9F and K9W Series flash. The controller has write-protected ability to prevent writing data to flash. The controller has a led control pin. It has three operation modes: suspend (off), active (fast) and idle (twinkle) mode. For read/write operation, the controller can achieve 1,000kB/920kB throughput. Comprehensive application with Windows OS is available. This controller can operate in Win XP, Win2000, Windows Me, and Mac OS without any driver installation. The OTi_6828 is available in cost-saving 32-pin TSOP package. Features * Flash controller with full-speed USB interface * Integrated 5V/3.3V regulator, USB bus power supply capability * USB Specification Compliance -- Conforms to USB Specification, Version 1.1 * Integrated USB transceiver -- Dynamic feedback control -- Stable slew rate, independent of external loading * RISC micro-controller -- High-performance RISC architecture -- Single cycle instruction execution * 14.318 MHz external clock * Integrated PLL * Integrated Power On Reset (POR) * Support up to 4 pieces of NAND Flash memory with write-protected ability * Support Toshiba and Samsung's K9K series flash * Support Samsung's K9F and K9W series flash * Support wear-leveling * Higher reliability: ECC on the fly * Automatic bad block management * Supported OS: Win XP, Win2000, Windows ME, Linux 2.4 above, and MAC OS 9.0 & higher Win 98/Win98SE driver available Mac 8.6 mass storage driver available from Apple Multiple LUN Windows driver is available * LED indication: Programmable through Mass Production Toolset * Configurable Vendor ID/Product ID (VID/PID) * Performance: Read (1,000kBytes/s) , Write (920kBytes/s) Max. * Small form factor - standard 32-pin TSOP package OTi Ours Technology Inc. OTI-6828 FLASH DISK CONTROLLER BLOCK DIAGRAM 14.318-MHz crystal PLL Clock Divider RISC CPU USB SIE USB Transceiver D+ D- program ROM Interrupt Controller RAM 5V Regulator Flash interface Flash LED indication LED POR 3.3V Pin Configuration TSOP 32 L GPIO LED_OUT FL_R_B FL_WE FL_RE FL_IO_7 FL_IO_6 FL_IO_5 FL_IO_4 FL_IO_3 FL_IO_2 FL_IO_1 FL_IO_0 FL_CLE FL_ALE SEL_RESETt 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 FL_CE3 FL_CE2 FL_CE1 FL_CE0 DMNS_IO DPLS_IO VDD VSS VDD5V VDD5V VSS VDD XTAL1 XTAL2 FL_WP RESET_B OTi Ours Technology Inc. OTI-6828 FLASH DISK CONTROLLER Pin Description Pin Name GPIO LED_OUT FL_R_B FL_WE FL_RE FL_IO_7 FL_IO_6 FL_IO_5 FL_IO_4 FL_IO_3 FL_IO_2 FL_IO_1 FL_IO_0 FL_CLE FL_ALE SEL_RESET RESET_B FL_WP XTAL2 XTAL1 VDD VSS VDD5V VDD5V VSS VDD DPLS_IO DMNS_IO FL_CE0 Attribute I/O O I O O I/O I/O I/O I/O I/O I/O I/O I/O O O I I I/O O I P P P P P P I/O I/O O Reserved I/O LED indication(open drain) Flash Ready_Busy Flash Write Enable Flash Read Enable Flash data bus - bit 7 Flash data bus - bit 6 Flash data bus - bit 5 Flash data bus - bit 4 Flash data bus - bit 3 Flash data bus - bit 2 Flash data bus - bit 1 Flash data bus - bit 0 Flash Command Latch Enable Flash Address Latch Enable Selection of Internal Reset or External Reset Reset, active low Flash Write Protect Crystal output Crystal input (14.318MHz) 3.3V Output GND 5V Input 5V Input GND 3.3V Output USB D+ USB DFlash Chip Enable - Chip 0 Description Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 FL_CE1 FL_CE2 FL_CE3 O O O Flash Chip Enable - Chip 1 Flash Chip Enable - Chip 2 Flash Chip Enable - Chip 3 30 31 32 D.C. Characters DC Characteristics-1 (Ta=0 oC to +70 oC, Vcc = 3.3V 10%) Parameter Power Supply Input Voltage Symbol VDD5V VIH VIL Output Voltage VOH VOL Input leakage current (*2) Working Current Operating Temperature Storage Temperature IO output current IRW Ta Ts IOH IOL -0 -55 --4 4 20 -70 +150 --mA C C mA mA ILK MIN 4.5 0.7x VDD -0.3 VDD-0.4 --1 TYP 5 -----MAX 5.5 5 0.2 x VDD -0.4 1 Unit V V V V V uA A.C. Characters Parameter Input rising delay Input falling delay Output rising delay Output falling delay Symbol TPIlh TPIhl TPOlh TPOhl MIN 0.35(2PF) 0.46(2PF) 1.35(10PF) 1.61(10PF) TYP 0.4(4PF) 0.53(4PF) 1.97(30PF) 2.41(30PF) MAX 0.54(8PF) 0.64(8PF) 2.59(50pF) 3.21(50pF) Unit ns ns ns ns OTi Ours Technology Inc. OTI-6828 FLASH DISK CONTROLLER Note: OTI reserves the right to make any changes without further notice to any products herein. How to reach us: OURS TECHNOLOGY INC. 4F, No. 85, Kung-Ming 6th Rd., Jubei City, Hsin-Chu Hsien, Taiwan, R.O.C. TEL: +886-3-553-7511 FAX: +886-3-555-5804 |
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