Alcor Micro AU9216, Technical Reference Manual

Page: 15 / 35

PIN ASSIGNMENT 11
Table 3-2. Pin Descriptions for the 48-pin DIP
Pin # Pin Name I/O Description
1 USB_DP I/O
USB D+ for upstream port. Need external 1.5K
Ω
pull-
up to 3.3V.
2 USB_DM I/O USB D- for upstream port.
3 UPPORT_LED O Upstream port LED. Active low when upstream port
enabled.
4 USB1_DP I/O
USB D+ for downstream port 1, add 15K
Ω
pull-down to
ground.