Rainbow Electronics W90P710CDG - Manual (Page 9)

W90P710CD/W90P710CDG
Publication Release Date: September 19, 2006
- 9 - Revision B2
Advanced Interrupt Controller
y
31 interrupt sources, including 6 external interrupt sources
y Programmable normal or fast interrupt mode (IRQ, FIQ)
y Programmable as either edge-triggered or level-sensitive for 6 external interrupt sources
y Programmable as either low-active or high-active for 6 external interrupt sources
y Priority methodology is encoded to allow for interrupt daisy-chaining
y Automatically mask out the lower priority interrupt during interrupt nesting
USB Host Controller
y
USB 1.1 compliant
y Compatible with Open HCI 1.0 specification
y Supports low-speed and full speed devices
y Build-in DMA for real time data transfer
y Two on-chip USB transceivers with one optionally shared with USB Device Controller
USB Device Controller
y
USB 1.1 compliant
y Support four USB endpoints including one control endpoint and 3 configurable endpoints for rich
USB functions
Two PLLs
y
The external clock can be multiplied by on-chip PLL to provide high frequency system clock
y The input frequency range is 3-30MHz; 15MHz is preferred.
y One PLL for both CPU and USB host/device controller
y One PLL for LCD pixel clock and audio IIS 12.288/16.934MHz clock source
y Programmable clock frequency
Real Time Clock (RTC)
y
32.768KHz operation
y Time counter (second, minute, hour) and calendar counter (day, month, year)
y Alarm register (second, minute, hour, day, month, year)
y 12 or 24-hour mode selectable
y Recognize leap year automatically
y Day of the week counter
y Frequency compensate register (FCR)
y Beside FCR, all clock and alarm data expressed in BCD code
y Support tick time interrupt