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AMD Geode™ SC2200 Processor Data Book 65
Signal Definitions
32580B
RI2# AJ8 I Ring Indicator. When low, indicates to the modem that a
telephone ring signal has been received by the modem.
They are monitored during power-off for wakeup event
detection.
Note: If selected as RI2# function but not used, tie
RI2# high.
GPIO11+IRQ15
DCD2# C28 I Data Carrier Detected. When low, indicates that the
data transfer device (e.g., modem) is ready to establish a
communications link.
Note: If selected as DCD2# function but not used, tie
DCD2# high.
GPIO9+IDE_IOW1#
+SDTEST2
DSR2# B29 I Data Set Ready. When low, indicates that the data trans-
fer device (e.g., modem) is ready to establish a communi-
cations link.
Note: If selected as DSR2# function but not used, tie
DSR2# low.
GPIO10+
IDE_IORDY1
3.4.11 Serial Ports (UARTs) Interface Signals (Continued)
Signal Name Ball No. Type Description Mux