Features: ` Complies fully with Universal Serial Bus Specification Rev. 2.0
` Complies with most Device Class specifications
` High performance USB interface device with integrated Serial Interface Engine (SIE), FIFO memory, data transceiver and 3.3 V voltage regulators
` Supports automatic USB 2.0 mode detection and USB 1.1 fall-back mode
` High speed DMA interface
` Fully autonomous and multi-configuration DMA operation
` Up to 14 programmable USB endpoints with 2 fixed control IN/OUT endpoints
` Integrated physical 8 kbyte of multi-configuration FIFO memory
` Endpoints with double buffering to increase throughput and ease real-time data transfer
` Bus independent interface with most microcontroller/microprocessors (16 Mbytes/s or 16 Mwords/s)
` Bus-powered capability with low power consumption and low 'suspend' current
` 12 MHz crystal oscillator with integrated PLL for low EMI
` Software controlled connection to the USB bus (SoftConnect™)
` Complies with the ACPI™, OnNow™ and USB power management requirements
` Internal power-on and low-voltage reset circuit, also supporting a software reset
` Operation over the extended USB bus voltage range (4.0 to 5.5 V) with 5 V tolerant I/O pads
` Operating temperature range -40 to +85 °C
` 12 kV in-circuit ESD protection on human accessible pins such as D+ and D-
` Full-scan design with high fault coverage (>99%)
` Available in LQFP64 package.Application· Personal digital assistant (PDA)
· Mass storage device, e.g., Zip®, Jaz®, MO, CD, DVD drive
· Digital camera
· Communication device, e.g. router, modem
· Printer
· Scanner.Pinout
Specifications
| Symbol |
Parameter |
Conditions |
Min |
Max |
Unit |
| VCC |
supply voltage |
|
-0.5 |
+6.0 |
V |
| VI |
input voltage |
|
-0.5 |
VCC+0.5 |
V |
| Ilatchup |
latch-up current |
VI < 0 or VI > VCC |
- |
200 |
mA |
| Vesd |
electrostatic discharge voltage |
ILI < 15 A |
- |
<tbd> |
V |
| Tstg |
storage temperature |
|
-60 |
+150 |
|
| Ptot |
total power dissipation |
|
- |
<tbd> |
mW |
DescriptionThe ISP1581 is a cost-optimized and feature-optimized Universal Serial Bus (USB) interface device, which fully complies with the Universal Serial Bus Specification Rev. 2.0. It provides high-speed USB communication capacity to systems based on a microcontroller or microprocessor. The ISP1581 communicates with the system's microcontroller/processor through a high-speed general-purpose parallel interface.
The ISP1581 supports automatic detection of USB 2.0 system operation. The USB 1.1 fall-back mode allows the device to remain operational under full-speed conditions. It is designed as a generic USB interface device so that it can fit into all existing device classes, such as: Imaging Class, Mass Storage Devices, Communication Devices, Printing Devices and Human Interface Devices.
The internal generic DMA block allows easy integration into data streaming applications. In addition, the various configurations of the DMA block are tailored for mass storage applications.
The internal generic DMA block allows easy integration into data streaming applications. In addition, the various configurations of the DMA block are tailored for mass storage applications.
The modular approach to implementing a USB interface device allows the designer to select the optimum system microcontroller from the wide variety available. The ability to re-use existing architecture and firmware investments shortens the development time, eliminates risk and reduces costs. The result is fast and efficient development of the most cost-effective USB peripheral solution.
The ISP1581 is ideally suited for many types of peripherals, such as: printers; scanners; magneto-optical (MO), compact disc (CD), digital video disc (DVD) and Zip®/Jaz® drives; digital still cameras; USB-to-Ethernet links; cable and DSL modems. The low power consumption during 'suspend' mode allows easy design of equipment that is compliant to the ACPI™, OnNow™ and USB power management requirements.
The ISP1581 also incorporates features such as SoftConnect™, a reduced frequency crystal oscillator and integrated termination resistors. These features allow significant cost savings in system design and easy implementation of advanced USB functionality into PC peripherals
ISP1581 Data Sheet
