SNLU302 March   2025 DS320PR810 , DS320PR822

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Access Methods
    1. 1.1 Register Programming Through SMBus
    2. 1.2 Device Configuration Through External EEPROM
  5. 2Register Map Overview
    1. 2.1 Share Registers
    2. 2.2 Channel Registers
  6. 3Equalization Control Settings
  7. 4CTLE Index and Flat Gain Selection Matrix
  8. 5Example Programming Sequences
    1. 5.1 Set CTLE Gain Level
    2. 5.2 Set CTLE Flat Gain Level
    3. 5.3 Set PD Control
    4. 5.4 Set SEL Input (DS320PR822)
  9. 6References

2 Register Map Overview

The DS320PR810 has two types of registers:

  • Share Registers – These registers can be accessed at any time and are used for device-level configuration, status read back, control, or to read back the device ID information.
  • Channel Registers – These registers are used to control and configure specific features for each individual channel. All channels have the same channel register set and can be configured independent of each other.

Both Share and Channel registers of a single channel bank are contained within a single register page as shown in Table 2-1.

Table 2-1 Register Map Overview
Address RangeChannel Bank 0 AccessChannel Bank 1 Access
0x00 - 0x1FChannel 0 registersChannel 4 registers
0x20 - 0x3FChannel 1 registersChannel 5 registers
0x40 - 0x5FChannel 2 registersChannel 6 registers
0x60 - 0x7FChannel 3 registersChannel 7 registers
0x80 - 0x9FBroadcast write channel bank 0 registers, read channel 0 registersBroadcast write channel bank 1 registers, read channel 4 registers
0xA0 - 0xBFBroadcast write channel 0-1 registers, read channel 0 registersBroadcast write channel 4-5 registers, read channel 4 registers
0xC0 - 0xDFBroadcast write channel 2-3 registers, read channel 2 registersBroadcast write channel 6-7 registers, read channel 6 registers
0xE0 - 0xFFBank 0 Share registersBank 1 Share registers

Complex bit access types are encoded to fit into small table cells. Table 2-2 shows the codes that are used for access types in this section.

Table 2-2 Access Type Codes
Access Type Code Description
Read Type
R R Read only access.
Write Type
R/W R/W Read / Write access.
R/W/SC R/W/SC Read / Write access, self-clearing
Reset or Default Value
-n Value after reset or the default value.