MA101 Datasheet, PDF (8/30 Pages) Megawin Technology Co., Ltd – Low-speed USB Specification version 1.1 compliance

MEGAWIN
MAKE YOU WIN
MA101
Datasheet Version 1.02
PIN
Input/Output
CMOS/NMOS
Pull High Resistor
Enable/Disable
Output Buffer
P0.0
Output
CMOS
Disable
BUSY_LED
P0.1
Output
CMOS
Disable
TX/RX_LED
P0.2
Output
CMOS
Disable
USB_LED
P0.3
Output
CMOS
Disable
VCC
P0.4 , P0.5
P0.6
P0.7
User Control
User Control
Input
User Control
User Control
User Control
User Control
User Control
User Control
User Control
UART_TX /
User Control
Note (1)
None
P1.0 ~ P1.7
User Control
User Control
User Control
User Control
P2.0
User Control
Note(2)
Note(2)
User Control
P2.1 ~ P2.2
Note(2)
Note(2)
Note(2)
Note(2)
P2.3
User Control
Note(2)
Note(2)
User Control
P2.4 ~ P2.7
User Control
User Control
User Control
User Control
P3.0 ~ P3.7
User Control
User Control
User Control
User Control
P4.0 ~ P4.1
User Control
User Control
User Control
User Control
Note (1): User can set UART_TX to 0 or 1 by MA101_SetIO_V() for special application. It is recommended not
to call MA101_SetIO_V() function during the data transmitting; otherwise, the result is undefined.
MA101 will reset UART_TX to 1 before transferring any data through WriteData() api, and it keeps 1
after data is completed.
Note (2): If there is an EEPROM with Customer’s ID Data, user can’t change any setting on Port 2.1 and Port
2.2 by DLL Function Library. The setting includes Input/Out, CMOS/NMOS, Pull High Resistor
Enable/Disable and Output Value. On the contrary, if there is no EEPROM, Port 2.1 and Port 2.2 are
free to change by user.
5.1.3 Buffer Busy Indicator
When MA101 Data Rx Buffer is near full, Port 0.0 (Busy LED) will change to LOW, remind DUT slow down or
stop transfer data to MA101; otherwise, MA101 Rx Data Buffer will overrun. Port 0.0 (Busy LED) will return to
HIGH when MA101 Rx Buffer is not busy and safe to continue receive data from Backend Device.
Note: Under certain circumstances, if system resources are not available, it is necessary to reference P0.0
(busy pin) to avoid the data lost.
This document information is the intellectual property of Megawin Technology Co., Ltd.
© Megawin Technology Co., Ltd. 2009 All rights reserved.
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