AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 170

• 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

Figure 9-4 shows the registers associated with the USB interrupts. Each interrupt source
has an enable (IEN) and a request (IRQ) bit. The 8051 sets the IEN bit to enable the inter-
rupt. The USB core sets an IRQ bit high to request an interrupt, and the 8051 clears an
IRQ bit by writing a “1” to it.
EZ-USB TRM v1.9
IN07IRQ
OUT07IRQ
USBIRQ
IN07IEN
OUT07IEN
USBIEN
OUT7IEN
OUT7IR
IN7IEN
IN7IR
b7
b7
b7
b7
b7
b7
-
-
OUT6IEN
OUT6IR
IN6IEN
IN6IR
b6
b6
b6
b6
b6
b6
-
-
OUT5IEN
Endpoints 0-7 OUT Interrupt Requests
OUT5IR
Endpoints 0-7 OUT Interrupt Enables
IN5IEN
Endpoints 0-7 IN Interrupt Requests
IN5IR
Endpoints 0-7 IN Interrupt Enables
b5
b5
b5
b5
b5
b5
-
-
Figure 9-4. EZ-USB Interrupt Registers
USB Interrupt Request
USB Interrupt Enables
Chapter 9. EZ-USB Interrupts
OUT4IEN
OUT4IR
USESIR
URESIE
IN4IEN
IN4IR
b4
b4
b4
b4
b4
b4
OUT3IEN
OUT3IR
SUSPIR
SUSPIE
IN3IEN
IN3IR
b3
b3
b3
b3
b3
b3
SUTOKIR
OUT2IEN
SUTOKIE
OUT2IR
IN2IEN
IN2IR
b2
b2
b2
b2
b2
b2
OUT1IEN
OUT1IR
IN1IEN
SOFIR
SOFIE
IN1IR
b1
b1
b1
b1
b1
b1
OUT0IEN
SUDAVIR
SUDAVIE
OUT0IR
IN0IEN
IN0IR
Page 9-7
b0
7FAA
b0
b0
7FAC
b0
7FAD
b0
b0
7FAB
7FAE
7FA9