CH9121 Datasheet - ETC

CH9121 Network and UART Transparent Transmission

LQFP package; 64 pins; package body 10 x10mm 4. Pins CH9121 Pin No. 2, 12, 17, 21, 29, 40, 42, 45, 63 6, 19, 28, 43, 54, 64 3, 9, 13, 18, 20, 37, 41, 44, 48 14, 15, 16, 22, 23, 24, 25, 26, 27, 34, 35, 38, 39, 47, 49, 50, 61, 62 1 Pin Name VCC33 VCC18 GND NC RSETE 4 RXP 5 RXN Pin Type Power P.

CH9121 Datasheet 1 Network and UART Transparent Transmission Chip CH9121 Manual Version: 2B 1. Overview CH9121 is a chip realizing transparent transmission between network and UART. It integrates TCP/IP protocol stack, which can realize bidirectional transparent transmission between network data packets and serial data. It has 4 working modes: TCP CLIENT, TCP SERVER, UDP CLIENT and UDP SERVER. The serial baud rate can be up to 921600bps. It can be easily configured by upper computer software .

CH9121 Features

* Internal Ethernet MAC layer and PHY layer

* Realize bidirectional transparent transmission between serial data and network data

* Support 10/100M, full/half duplex self-adaption Ethernet interface, compatible with 802.3 protocol

* Support automatic MDI/MDIX line conversion

* Su

CH9121-ETC.pdf