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SC1100 Datasheet(PDF) 43 Page - National Semiconductor (TI) |
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SC1100 Datasheet(HTML) 43 Page - National Semiconductor (TI) |
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43 / 348 page  Revision 1.1 43 www.national.com Signal Definitions (Continued) 2.4.8 Universal Serial Bus (USB) Interface Signals Signal Name Ball No. Type Description Mux POWER_EN AD19 O Power Enable. This signal enables the power to a self- powered USB hub. --- OVER_CUR# AE19 I Overcurrent. This signal indicates that the USB hub has detected an overcurrent on the USB. --- DPOS_PORT1 AD7 I/O USB Port 1 Data Positive. This signal is the Universal Serial Bus Data Positive for port 1. --- DNEG_PORT1 AE7 I/O USB Port 1 Data Negative. This signal is the Universal Serial Bus Data Negative for port 1. --- DPOS_PORT2 AF7 I/O USB Port 2 Data Positive. This signal is the Universal Serial Bus Data Positive for port 2. --- DNEG_PORT2 AF8 I/O USB Port 2 Data Negative. This signal is the Universal Serial Bus Data Negative for port 2. --- DPOS_PORT3 AD8 I/O USB Port 3 Data Positive. This signal is the Universal Serial Bus Data Positive for port 3. --- DNEG_PORT3 AE8 I/O USB Port 3 Data Negative. This signal is the Universal Serial Bus Data Negative for port 3. --- 2.4.9 Serial Port (UART) and Infrared (IR) Interface Signals Signal Name Ball No. Type Description Mux SIN AD11 I Serial Input. Receive composite serial data from the communications link (peripheral device, modem or other data transfer device). F_C/BE1# SOUT AE11 O Serial Output. Send composite serial data to the com- munications link (peripheral device, modem or other data transfer device). These signals are set active high after a system reset. F_C/BE2# RTS# AF11 O Request to Send. When low, indicates to the modem or other data transfer device that the corresponding UART is ready to exchange data. A system reset sets these sig- nals to inactive high, and loopback operation holds them inactive. GPIO7+ IDE_DACK1#+ F_C/BE3# CTS# AC12 I Clear to Send. When low, indicates that the modem or other data transfer device is ready to exchange data. GPIO8+ IDE_DREQ1+ SMI_O DTR#/BOUT AD12 O Data Terminal Ready Output. When low, indicates to the modem or other data transfer device that the UART is ready to establish a communications link. After a system reset, this ball provides the DTR# function and sets this signal to inactive high. Loopback operation drive them inactive. Baud Output. Provides the associated serial channel baud rate generator output signal if test mode is selected (i.e., bit 7 of the EXCR1 Register is set). GPIO6+ IDE_IOR1#+ INTR_O RI# AF19 I Ring Indicator. When low, indicates to the modem that a telephone ring signal has been received by the modem. Monitored during power-off for wakeup event detection. GPIO11+IRQ15 |
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