AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 231

• 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

Bit 7:
This bit indicates that a high to low transaction was detected on the WAKEUP# pin. Writ-
ing a “1” to this bit resets it to “0.”
Bit 3:
The EZ-USB DISCON# pin reflects the complement of this bit. This bit is normally set to
0 so that the action of the DISCOE bit (below) either floats the DISCON# pin or drives it
HI.
Bit 2:
DISCOE controls the output buffer on the DISCON# pin. When DISCOE=0, the pin
floats, and when DISCOE=1, it drives to the complement of the DISCON bit (above).
DISCOE is used in conjunction with the RENUM bit to perform ReNumeration
ter 5, "EZ-USB Enumeration and ReNumeration ").
Page 12-38
USBCS
WAKESRC
R/W
b7
0
WAKESRC Wakeup source
DISCON
DISCOE
b6
R
0
-
Figure 12-31. USB Control and Status Registers
b5
R
0
-
Signal a Disconnect on the DISCON# pin
Disconnect Output Enable
USB Control and Status
Chapter 12. EZ-USB Registers
b4
R
0
-
DISCON
R/W
b3
0
DISCOE
R/W
b2
1
RENUM
R/W
b1
0
EZ-USB TRM v1.9
SIGRSUME
(Chap-
R/W
b0
7FD6
0