# Presentation: 735698

- Heather Hartmann (BNL)
- SNS Global Controls

-  RTDL System

- SNS Software Final Design Review

## Features

- Provides access to Machine Parameters
- Central Location
- Contained in one Chassis
- Broadcast to all locations
- 10MHz serial differential PECL

- SNS Software Final Design Review

## V105S

-  Inputs:
- Transmit Trigger
- Single ended TTL - 50 ohm
- Outputs:
- 10MHz encoded clock transformer coupled
- Differential PECL

- SNS Software Final Design Review

## Features

- VMEbus based
- A16, D16, D08(OE)
- Address jumper selectable on 512 byte boundary
- Interrupts supported
- Level and Vector configurable
- NOREPLY Interrupt
- Time division multiplexes machine parameters onto the link
- Supports up to 16 V206 modules (128 parameters)

- SNS Software Final Design Review

## V105S Registers

- Command (16 bit)
- Reset
- External Trigger ON/OFF
- Go (Init Done)
- Interrupt Enable
- Interrupt Level
- Default Configuration
- Not Reset, External Trigger OFF, Init Not done, Interrupts DISABLED, Interrupt Level 0.

- SNS Software Final Design Review

## V105S Registers (con’t)

- Status (16 bit)
- No Reply Error
- Init Done Error
- RTDL ACTive
- No Reply ID Code
- Parameter ID Code Scan List
- Lists Input Modules’ Codes
- Terminates with Code 00

- SNS Software Final Design Review

## V105S - Encoder Block Diagram

- Parameter Data (24 bits)

- Parameter Data (24 bits)

- Local Bus Interface

- Parameter ID (8 bits)

- Parameter ID Strobe

- Data Ack Strobe

- Input Module Interface

- VMEbus Interface and Control

- VMEbus

- Parameter ID (8 bits)

- Parameter ID Address (8 bits)

- RTDL Encoder

- External Trigger Event

- Load Data

- Scan        List RAM

- Encode Trigger

- RTDL Link

- SNS Software Final Design Review

## V206

-  Inputs:
- External Data (8)
- 5Mbit bi-phase mark encoded clock
- Differential Transformer coupled TTL
- Outputs:
- to V105S via P2 connector (local bus)

- SNS Software Final Design Review

## Features

- VMEbus based
- A16, D16, D08(OE)
- Address jumper selectable on 512 byte boundary
- Interrupts supported
- Level and Vector configurable
- Link Interrupts only
- 8 identical input channels
- Loaded from VMEbus
- Loaded from external source

- SNS Software Final Design Review

## V206 Registers: Module Configuration 

- Command
- Module Enable
- Interrupt Level
- Interrupt Enable
- 1 bit per channel
- Interrupt Status
- 1 bit per channel - pending interrupt
- Interrupt Vector

- SNS Software Final Design Review

## V206 Registers: Channel Configuration

- Command
- 8 bit Parameter ID
- Channel Enable
- Halt/Load VME Data
- Required due to 16 bit VME Data
- Internal/External Mode
- Reset

- SNS Software Final Design Review

## V206 Registers: Channel Status

- Status
- 8 bit Serial link ID Code
-  Frame Error
- CRC Error
- Link Status
- Interrupt Source
- Interrupt Status

- SNS Software Final Design Review

## V206 Registers: Channel Data

- Internal Data Register (VME - 24 bit)
- 1 per channel
- External Data Register (24 bit)
- 1 per channel

- SNS Software Final Design Review

## V206 - Typical Channel

- Local Serial Link Decoder

- Command Decode and VMEbus Interface

- External Data (24 bits)

-     Local Bus Interface

- Parameter Data (24 bits)

- Load Data

- VMEbus

- Parameter ID (8 bits)

- Data Ack Strobe

- Parameter ID Strobe

- Serial Input Link

- Internal Data (24 bits)

- Mode

- Data Valid

- Encoder Module Interface

- SNS Software Final Design Review

## SNS RTDL System Block Diagram

**External**
**Inputs**

**Private**
**P2 bus**

**VME BUS**

**P2**

**P2**

**P2**

**P2**

**P2**

**Trigger**

**RTDL**
**Encoder**

**Input**
**Module**

**Input**
**Module**

**Input**
**Module**

**Input**
**Module**

**Encoded**
**RTDL**
**output**

- SNS Software Final Design Review