Spezifikationen
RTL8197D‑CG is a highly integrated router SoC system-on-chip developed by Realtek Semiconductor, built around an embedded RLX5281 single-core processor, integrating 5-port 10/100Mbps Ethernet switch, MAC and PHY circuits, serving as the main control core for wired and wireless gateway routing equipment.
Suffix Explanation
- RTL8197D: Core routing main control chip model with built-in five-port fast Ethernet switching unit
- CG: Marking for 216-pin LQFP surface mount package; factory standard delivery adopts tape-and-reel packaging for automated SMT production
1. Core Hardware & Processing Specifications
- Embedded RLX5281 RISC CPU with maximum main frequency up to 660MHz
- On-chip cache configuration: 64KB instruction cache, 32KB data cache, plus 16KB instruction memory and 8KB data memory
- Equipped with standard EJTAG debugging interface compliant with IEEE P1149.1 for program downloading, debugging and firmware development
- Integrated Layer 2 five-port Ethernet switch, all five ports come with integrated 10BASE-T/100BASE-TX PHY transceivers
- Each network port can be flexibly configured as WAN uplink port or LAN downlink port; Port 0 reserves GMII/RGMII/MII external MAC interface for connecting external Wi-Fi RF chips
2. Network Protocol & Functional Features
- Fully complies with IEEE 802.3, IEEE 802.3u and IEEE 802.3az energy-saving Ethernet standards
- Supports NAT address translation, firewall access control, QoS traffic priority scheduling, DHCP server and client, UPnP and routing forwarding functions
- Built-in Auto-MDI/MDIX automatic cable identification and polarity correction for all Ethernet ports
- Supports link layer power saving mode to reduce power consumption when ports are idle
- Matches external RTL8192 series Wi-Fi chips to build 802.11 b/g/n/ac dual-band wireless router and AP access point solutions
3. Peripheral Interfaces & Electrical Parameters
- External expansion interfaces: SPI, I2C, UART serial port, PCM audio interface, I2S audio bus and multi-function GPIO pins
- Dual power supply architecture: core circuit 1.2V, I/O peripheral circuit 3.3V
- Supports external Flash and DDR memory expansion to run embedded routing operating systems
- Reserved hardware watchdog timer to prevent system crash and achieve automatic restart
4. Package & Mechanical Information
- Package type: 216-pin LQFP quad flat leaded surface mount package
- Moisture Sensitivity Level: MSL 3, reflow soldering must be completed within 168 hours after opening the vacuum moisture-proof package
- Lead frame structure features stable soldering performance, suitable for mass PCB assembly production
5. Environmental & Compliance Standards
- Operating ambient temperature range: 0 ℃ ~ +70 ℃
- Fully lead-free and RoHS & REACH compliant, free of restricted hazardous substances
- Optimized EMC design to suppress electromagnetic interference, adapting to household and small office network equipment working environments
6. Typical Application Scenarios
Home wired and wireless broadband routers, mini portable travel routers Hotel, office and commercial wireless AP access point equipment Smart home central gateway and IoT network protocol conversion gateways Wired monitoring NVR host, wireless IP camera main control motherboard Small enterprise multi-port wired switches and network access control terminals VoIP voice gateway and embedded industrial data transmission routing modules
LXB Semicon supplies original Realtek RTL8197D‑CG router main control SoC chip
