PM8172

PM8172 System Controller www.DataSheet4U.com Released PM8172 System Controller FEATURES The PM8172 system controller is ideal for various designs of advanced set-top boxes, DVD players, game stations, and Internet terminal appliances. The PM8172 interfaces to PMC-Sierra’s RM5231A, RM7035C and RM7935 MIPS RISC processors. FLASH/ROM INTERFACE Supports Flash memory area up to 64 Mbytes, with 8-bit, 16-bit, and 32-bit data access capability. Supports a ROM area size up to 4 Mbytes, with 8-bit, 16-bit, and 32-bit data access capability. Supports a maximum of 12 chip-select signals. Shared with a 68K-like peripheral bus. Provides a PCI arbiter that supports up to five individual bus master devices. Supports 33 MHz bus frequency. Provides a 32-bit data bus interface. INTERRUPT CONTROLLER Supports a maskable interrupt to the CPU and a non-maskable interrupt to the CPU for severe events. The priority order of interrupt request lines can be assigned by software. Module interrupts can be masked on/off independently by setting the corresponding mask registers. CPU INTERFACE Connects to PMC-Sierra’s RM5231A, RM7035C, and RM7935 64-bit MIPS RISC microprocessors. Supports CPU bus frequencies up to 100 MHz. PERIPHERAL BUS CONTROLLER Provides a 68K-like bus interface. Does not require an external latch for addressing. Provides an 8-bit and 16-bit data bus interface. Shared with the Flash/ROM interface. Supports up to four DMA channels. Provides cycle ...