AN2135SC Cypress Semiconductor Corp, AN2135SC Datasheet - Page 118

• Manufacturer Part Number: AN2135SC
• Description: IC MCU 8051 8K RAM 24MHZ 44QFP
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB®r

Specifications of AN2135SC

• Applications: USB Microcontroller
• Core Processor: 8051
• Program Memory Type: ROMless
• Controller Series: AN213x
• Ram Size: 8K x 8
• Interface: I²C, USB
• Number Of I /o: 8
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1308

6.15
Enumeration Note
The code in this example is complete, and runs on the EZ-USB chip. You may be wonder-
ing about the missing step, which reports the endpoint characteristics to the host during the
enumeration process. The reason this code runs without any enumeration code is that the
EZ-USB chip comes on as a fully-functional USB device with certain endpoints already
configured and reported to the host. Endpoint 2 is included in this default configuration.
The full default configuration is described in Chapter 5, "EZ-USB Enumeration and
ReNumeration "
Portions of the above code are not necessary for the default configuration (such as setting
the endpoint valid bits) but the code is included to illustrate all of the EZ-USB registers
used for bulk transfers.
EZ-USB TRM v1.9
Chapter 6. EZ-USB CPU
Page 6-21