The ISP1161A1 is a single-chip Universal Serial Bus (USB) Host Controller (HC) and Device Controller (DC), which complies with Universal Serial Bus Specification Rev. 2.0, supporting data transfer at full-speed (12 Mbit/s) and low-speed (1.5 Mbit/s).
The ISP1161A1 is a single‑chip USB controller that integrates both a host controller (HC) and a device controller (DC) on the same die. It complies with USB Specification Rev. 2.0, offering full‑speed (12 Mbit/s) and low‑speed (1.5 Mbit/s) operation for the host side and full‑speed for the device side. The chip provides two downstream ports for the host and one upstream port for the device, with separate I/O, DMA channels and interrupt pins for each function.
The device is targeted at embedded systems such as PDAs, digital cameras, set‑top boxes and other portable electronics. It supports up to 14 programmable USB endpoints, on‑chip FIFO buffers (4 kB for HC, 2.5 kB for DC), a 6 MHz crystal oscillator with PLL, and can operate from either a 5 V or 3.3 V supply. It is offered in LQFP64 packages (SOT314‑2 and SOT414‑1) and operates over a temperature range of –40 °C to +85 °C.
| Supported USB speeds (host) | Full‑speed 12 Mbit/s, Low‑speed 1.5 Mbit/s |
|---|---|
| Maximum data‑transfer rate (host to MCU) | 15 Mbyte/s |
| Maximum data‑transfer rate (device to MCU) | 11.1 Mbyte/s |
| Number of programmable USB endpoints | Up to 14 |
| FIFO buffer RAM (host) | 4 kbytes |
| Clock oscillator | 6 MHz crystal with integrated PLL |
| Programmable clock output range | 3 MHz to 48 MHz |
| Supply voltage | 3.3 V or 5 V |
| Operating temperature range | -40 °C to +85 °C |
| Package options | LQFP64 (SOT314‑2, SOT414‑1) |
It supports full‑speed (12 Mbit/s) and low‑speed (1.5 Mbit/s) USB transfers.
The chip provides two selectable downstream ports for the host controller.
Yes, it can operate from either a 3.3 V or a 5 V supply.
The maximum rate is 11.1 Mbyte/s.