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RTL8196E

5-PORT 10/100M ETHERNET ROUTER NETWORK PROCESSOR

Realtek Semiconductor 

RTL8196E

Datasheet

7.2. DDR DRAM Controller

7.2.1. Features

• Interface (Bus Width): 16-bit

• Targeted DDR Frequency: Up to 193.75MHz

• Supports one Chip Select (MCS0#)

• Supports both DDR1 and DDR2

• Supported DDR DRAM Chip Specification

ƒ Bank Counts: 8

ƒ Row Counts: 4K (A0~A11), 8K (A0~A12), 16K (A0~A13)

ƒ Column Counts: 512 (A0~A8), 1K (A0~A9), 2K (A0~A9, A11), 4K (A0~A9, A11, A12)

• Programmable Timing Parameters: tRAS, tRP, tRCD, tCL, tREFI…

7.3. SPI Flash Controller

The SPI flash controller is a new design and incorporates new features.

7.3.1. Features

• Targeted SPI flash frequency: Up to 96.875MHz (when DRAM clock is 193.75MHz)

• Supports one chip

• In addition to a programmed I/O interface, also supports a memory-mapped I/O interface for read

operation

• Supports Read and Fast Read in memory-mapped I/O mode

7.3.2. Pin Mode and Definition of Serial and Dual I/O

Modes supported on the SPI flash interface:

Serial I/O Mode

• SDI: Flash chip data input pin

• SDO: Flash chip data output pin

Dual I/O Mode

• SDIO0 (SDI): Flash chip data bi-directional pin

• SDIO1 (SDO): Flash chip data bi-directional pin

5-Port 10/100M Ethernet Router Network Processor

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Track ID: JATR-3375-16 Rev. 1.0

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