AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 196

• 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

* See Table 12-1 for individual endpoint buffer addresses.
Sixteen 64-byte bulk data buffers appear at 0x1B40 and 0x7B40 in the 8K version of EZ-
USB, and only at 0x7B40 in the 32K version of EZ-USB. The endpoints are ordered to
permit the reuse of the buffer space as contiguous RAM when the higher numbered end-
points are not used. These registers default to unknown states.
EZ-USB TRM v1.9
INnBUF,OUTnBUF
12.2
R/W
D7
b7
x
Bulk Data Buffers
R/W
D6
b6
x
Table 12-1. Bulk Endpoint Buffer Memory Addresses
Endpoint 0-7 IN/OUT Data Buffers
R/W
D5
b5
1DC0-1DFF
1CC0-1CFF
1EC0-1EFF
1E80-1EBF
1D80-1DBF
1D40-1D7F
1D00-1D3F
1C80-1CBF
1C40-1C7F
1C00-1C3F
1BC0-1BFF
1B80-1BBF
1E40-1E7F
1E00-1E3F
1B40-1B7F
x
1F00-1F3F
Address
Figure 12-2. Bulk Data Buffers
Chapter 12. EZ-USB Registers
R/W
D4
b4
x
7EC0-7EFF
7DC0-7DFF
7D80-7DBF
7CC0-7CFF
7C80-7CBF
7BC0-7BFF
7E80-7EBF
7D40-7D7F
7D00-7D3F
7C40-7C7F
7C00-7C3F
7B80-7BBF
7E40-7E7F
7E00-7E3F
7B40-7B7F
7F00-7F3F
Address
R/W
D3
b3
x
OUT0BUF
OUT1BUF
OUT2BUF
OUT3BUF
OUT4BUF
OUT5BUF
OUT6BUF
OUT7BUF
IN0BUF
IN1BUF
IN2BUF
IN3BUF
IN4BUF
IN5BUF
IN6BUF
IN7BUF
Name
Size
R/W
D2
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
64
b2
x
R/W
D1
b1
x
1B40-1F3F*
Page 12-3
R/W
D0
b0
x