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CY7C64713-56PVXC Datasheet(PDF) 5 Page - Cypress Semiconductor |
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CY7C64713-56PVXC Datasheet(HTML) 5 Page - Cypress Semiconductor |
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5 / 72 page  CY7C64713 Document Number: 38-08039 Rev. *J Page 5 of 72 Figure 1. Crystal Configuration I2C Bus FX1 supports the I2C bus as a master only at 100/400 KHz. SCL and SDA pins have open drain outputs and hysteresis inputs. These signals must be pulled up to 3.3 V, even if no I2C device is connected. Buses All packages: 8 or 16-bit ‘FIFO’ bidirectional data bus, multiplexed on I/O ports B and D. 128-pin package: adds 16-bit output only 8051 address bus, 8-bit bidirectional data bus. USB Boot Methods During the power up sequence, internal logic checks the I2C port for the connection of an EEPROM whose first byte is either 0xC0 or 0xC2. If found, it uses the VID/PID/DID values in the EEPROM in place of the internally stored values (0xC0). Alternatively, it boot-loads the EEPROM contents into an internal RAM (0xC2). If no EEPROM is detected, FX1 enumerates using internally stored descriptors. The default ID values for FX1 are VID/PID/DID (0x04B4, 0x6473, 0xAxxx where xxx=Chip revision).[2] Table 1. Special Function Registers x 8x 9x Ax Bx Cx Dx Ex Fx 0 IOA IOB IOC IOD SCON1 PSW ACC B 1SP EXIF INT2CLR IOE SBUF1 2DPL0 MPAGE INT4CLR OEA 3DPH0 OEB 4 DPL1 OEC 5 DPH1 OED 6 DPS OEE 7PCON 8 TCON SCON0 IE IP T2CON EICON EIE EIP 9 TMOD SBUF0 ATL0 AUTOPTRH1 EP2468STAT EP01STAT RCAP2L BTL1 AUTOPTRL1 EP24FIFOFLGS GPIFTRIG RCAP2H CTH0 reserved EP68FIFOFLGS TL2 DTH1 AUTOPTRH2 GPIFSGLDATH TH2 E CKCON AUTOPTRL2 GPIFSGLDATLX F reserved AUTOPTRSETUP GPIFSGLDATLNOX 12 pF 12 pF 24 MHz 20 × PLL C1 C2 12-pF capacitor values assumes a trace capacitance of 3 pF per side on a four layer FR4 PCA Table 2. Default ID Values for FX1 Default VID/PID/DID Vendor ID 0x04B4 Cypress Semiconductor Product ID 0x6473 EZ-USB FX1 Device release 0xAnnn Depends on chip revision (nnn = chip revision where first silicon = 001) Notes 2. The I2C bus SCL and SDA pins must be pulled up, even if an EEPROM is not connected. Otherwise this detection method does not work properly. [+] Feedback |
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