AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 79

• Manufacturer Part Number: AN2131QC
• Description: IC MCU 8051 8K RAM 24MHZ 80BQFP
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB®r

Specifications of AN2131QC

• 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: 24
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1307

Table 5-2 shows how the EZ-USB core responds to endpoint zero requests when
ReNum=0.
The USB host enumerates by issuing:
Page 5-4
5.3
•
•
•
Set_Address
Get_Descriptor
Set_Configuration (to 1)
EZ-USB Core Response to EP0 Device Requests
Table 5-2. How the EZ-USB Core Handles EP0 Requests When ReNum=0
Vendor Requests
0xA1-0xAF Reserved
bRequest
all other
0x0A
0x0B
0x0C
0x0A
0x00
0x00
0x00
0x01
0x01
0x02
0x03
0x03
0x04
0x05
0x06
0x07
0x08
0x09
Get Status/Device
Get Status/Endpoint
Get Status/Interface
Clear Feature/Device
Clear Feature/Endpoint Clears Stall bit for indicated EP
(reserved)
Set Feature/Device
Set Feature Endpoint
(reserved)
Set Address
Get Descriptor
Set Descriptor
Get Configuration
Set Configuration
Get Interface
Set Interface
Sync Frame
Firmware Load
Name
Chapter 5. EZ-USB CPU
Returns two zero bytes
Supplies EP Stall bit for indicated EP
Returns two zero bytes
None
None
None
Sets Stall bit for indicated EP
None
Updates FNADD register
Supplies internal table
None
Returns internal value
Sets internal value
Returns internal value (0-3)
Sets internal value (0-3)
None
Upload/Download RAM
Reserved by Cypress Semiconductor
None
Action: ReNum=0
EZ-USB TRM v1.9