QF9700 (LS) is a highly integrated, low-power, single-chip USB interface Ethernet control circuit. It is fully compatible with the IEEE802.3u protocol and supports the IEEE 802.3x flow control protocol. It supports USB interface Ethernet adapters and CD-ROM composite devices, and can achieve USB interface Ethernet adapter self-contained driver function through external SPI Flash.
The QF9700 (LS) is a highly integrated, low‑power single‑chip USB interface Ethernet controller that includes a USB transceiver, Ethernet PHY and MAC, and memory controller. It fully complies with IEEE 802.3u and supports IEEE 802.3x flow‑control.
Key features include USB 1.1/2.0 full‑speed operation, support for USB suspend mode, user‑definable commands, and the ability to connect up to a 16 MByte SPI Flash for driver or application storage. Electrical specifications such as a 3.3 V single‑supply with an internal 1.8 V LDO, and detailed pin definitions are provided. This manual is written in Chinese.
| Operating voltage VCC33 range | -0.3 ~ 3.6 V |
|---|---|
| Operating voltage VCC18 range | -0.3 ~ 2.0 V |
| Recommended VCC33 supply | 3.0 ~ 3.6 V |
| Recommended VCC18 supply | 1.7 ~ 1.9 V |
| Operating temperature | 0 ~ 70 °C |
| Storage temperature | -40 ~ 125 °C |
| Maximum SPI Flash size | 16 MByte |
| USB standard support | USB 1.1, USB 2.0 full‑speed |
| Ethernet protocol compatibility | IEEE 802.3u, IEEE 802.3x flow‑control |
It supports USB 1.1 and USB 2.0 full‑speed modes.
The device can connect an external SPI Flash up to 16 MByte.
It is fully compatible with IEEE 802.3u and supports IEEE 802.3x flow‑control.
The controller operates from a 3.3 V supply with an internal 1.8 V LDO; recommended VCC33 is 3.0‑3.6 V and VCC18 is 1.7‑1.9 V.