AMD Geode SC2200 - Manual (Page 15)

AMD Geode™ SC2200 Processor Data Book 15
Overview 32580B
■ General Purpose I/Os (GPIOs):
— 27 multiplexed GPIO signals
■ Low Pin Count (LPC) Bus Interface:
— Specification v1.0 compatible
■ PCI Bus Interface:
— PCI v2.1 compliant with wakeup capability
— 32-Bit data path, up to 33 MHz
— Glueless interface for an external PCI device
— Fixed priority
— 3.3V signal support only
■ Sub-ISA Bus Interface:
— Up to 16 MB addressing
— Supports a chip select for ROM or Flash EPROM
boot device
— Supports either:
– M-Systems DiskOnChip DOC2000 Flash file
system
– NAND EEPROM
— Supports up to two chip selects for external I/O
devices
— 8-Bit (optional 16-bit) data bus width
— Shares balls with PCI signals
— Is not a subtractive agent
■ IDE Interface:
— Two IDE channels for up to four external IDE devices
— Supports ATA-33 synchronous DMA mode transfers,
up to 33 MB/s
■ Universal Serial Bus (USB):
— USB OpenHCI v1.0 compliant
— Three ports
SuperI/O Module
■ Real-Time Clock (RTC):
— DS1287, MC146818 and PC87911 compatible
— Multi-century calendar
■ ACCESS.bus (ACB) Interface:
— Two ACB interface ports
■ Parallel Port:
— EPP 1.9 compliant
— IEEE 1284 ECP compliant, including level 2
■ Serial Port (UART):
— UART1, 16550A compatible (SIN, SOUT, BOUT
pins), used for SmartCard interface
— UART2, 16550A compatible
— Enhanced UART with fast Infrared (IR)
Other Features
■ High-Resolution Timer:
— 32-Bit counter with 1
μs count interval
■ WATCHDOG Timer:
— Interfaces to INTR, SMI, Reset
■ Clocks:
— Input (external crystals):
– 32.768 KHz (internal clock oscillator)
– 27 MHz (internal clock oscillator)
— Output:
– AC97 clock (24.576 MHz)
– Memory controller clock (66 MHz to 100 MHz)
– PCI clock (33 MHz)
■ JTAG Testability:
— Bypass, Extest, Sample/Preload, IDcode, Clamp, HiZ
■ Voltages:
— Internal logic:
– 233 MHz @ 1.8V
– 266 MHz @ 1.8V
– 300 MHz @ 2.1V
— Standby logic:
– 233 MHz @ 1.8V
– 266 MHz @ 1.8V
– 300 MHz @ 2.1V
— I/O: 3.3V
— Standby I/O: 3.3V
— Battery (if used): 3.0V