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GPUSB101A データシート(PDF) 4 Page - Generalplus Technology Inc. |
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GPUSB101A データシート(HTML) 4 Page - Generalplus Technology Inc. |
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4 / 37 page  GPUSB101A © Generalplus Technology Inc. Proprietary & Confidential 4 Sep 24, 2014 Version: 1.4 USB BRIDGE CONTROLLER 1. GENERAL DESCRIPTION The GPUSB101A carries an 8-bit processor, 16K bytes OTP ROM, 256 bytes working SRAM, six 64 bytes buffer SRAM, 2 set 12-bit timers, and 20 general I/Os. The general I/Os can be programmed as parallel bus or SPI. There are three main functions for the bridge IC. USB to parallel bus USB to SPI Parallel bus to SPI 2. APPLICATION FIELD USB Bulk transfer for download USB Isochronous IN transfer for MIC in (needs extra ADC) USB Isochronous OUT transfer for speaker out(needs extra DAC) USB Interrupt IN transfer for small data communication 3. FEATURES Working Voltage: 2.4V - 3.6V (without USB) 3.0V - 3.6V (with USB) IOA, IOB Working Voltage: 2.4V - 5.5V IOC Working Voltage: 2.4V - 3.6V CPU Speed: 0.09375MHz - 12MHz ROM Size: 16 K bytes OTP ROM RAM Size: 256 bytes working SRAM Six 64 bytes buffer SRAM Two 12-bit timers/counters On-chip Voltage Regulator: 3.3 V output USB Specification 2.0 compliant; full-speed (12 Mbps) USB supports Bulk IN, Bulk OUT, Interrupt IN, Isochronous IN and Isochronous OUT transfer mode 20 GPIO port (Parallel bus and SPI share with GPIO) Supports parallel bus 4 bit mode (5 pin for control and 4 pin for data) Supports parallel bus 8 bit mode (5 pin for control and 8 pin for data) Supports SPI master mode Supports SPI slave mode Supports SPI transparent mode (Host IC can control SPI slave device through bridge IC ) 4. BLOCK DIAGRAM HOST IC SPI PLL CLK_DIV USB PHY 6502 +Timer + Int CPU_USB IF UDC SPI M/S SPI Flash PC BUS_SEL 12 M OTP 16K CPU RAM 256 B BUF0 64 B BUF2 64 B BUF1 64 B I/O BUF4 64 B BUF5 64 B Parallel Bus BUF3 64 B SPI slave SPI master SPI transparent |
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