General description
●The ISP1181A is a Universal Serial Bus (USB) peripheral controller that complies with Universal Serial Bus Specification Rev. 2.0, supporting data transfer at full-speed (12 Mbit/s). It provides full-speed USB communication capacity to microcontroller or microprocessor-based systems. The ISP1181A communicates with the system’s microcontroller or microprocessor through a high-speed general-purpose parallel interface.
●Features
●■ Complies with Universal Serial Bus Specification Rev. 2.0 and most Device Class specifications
●■ Supports data transfer at full-speed (12 Mbit/s)
●■ High performance USB peripheral controller with integrated Serial Interface Engine (SIE), FIFO memory, transceiver and 3.3 V voltage regulator
●■ High speed (11.1 Mbyte/s or 90 ns read/write cycle) parallel interface
●■ Fully autonomous and multi-configuration DMA operation
●■ Up to 14 programmable USB endpoints with 2 fixed control IN/OUT endpoints
●■ Integrated physical 2462 bytes of multi-configuration FIFO memory
●■ Endpoints with double buffering to increase throughput and ease real-time data transfer
●■ Seamless interface with most microcontrollers/microprocessors
●■ Bus-powered capability with low power consumption and low ‘suspend’ current
●■ 6 MHz crystal oscillator input with integrated PLL for low EMI
●■ Controllable LazyClock (100 kHz ± 50 %) output during ‘suspend’
●■ Software controlled connection to the USB bus (SoftConnect™)
●■ Good USB connection indicator that blinks with traffic (GoodLink™)
●■ Clock output with programmable frequency (up to 48 MHz)
●■ Complies with the ACPI™, OnNow™ and USB power management requirements
●■ Internal power-on and low-voltage reset circuit, with possibility of a software reset
●■ Operation over the extended USB bus voltage range (4.0 V to 5.5 V) with 5 V tolerant I/O pads
●■ Operating temperature range −40 °C to +85 °C
●■ Full-scan design with high fault coverage
●■ Available in TSSOP48 and HVQFN48 packages.
●Applications
●■ Personal Digital Assistant (PDA)
●■ Digital camera
●■ Communication device, for example:
● ◆ Router
● ◆ Modem
●■ Mass storage device, for example:
● ◆ Zip drive
●■ Printer
●■ Scanner.
