47.7.4 MediaLB System Status Register
| Name: | MLB_MSS |
| Offset: | 0x020 |
| Reset: | 0x00000000 |
| Property: | Read/Write |
| Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
| Access | |||||||||
| Reset |
| Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
| Access | |||||||||
| Reset |
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
| Access | |||||||||
| Reset |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| SERVREQ | SWSYSCMD | CSSYSCMD | ULKSYSCMD | LKSYSCMD | RSTSYSCMD | ||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |||
| Reset | 0 | 0 | 0 | 0 | 0 | 0 |
Bit 5 – SERVREQ Service Request Enabled
| Value | Description |
|---|---|
| 0 | The MediaLB block responds with a “device present” system response. |
| 1 | The MediaLB block responds with a “device present, request service” system response if a matching channel scan system command is detected. |
Bit 4 – SWSYSCMD Software System Command Detected in the System Quadlet (cleared by writing a 0)
Set by hardware, cleared by software. Data is stored in the MLB_MSD register for this command.
Bit 3 – CSSYSCMD Channel Scan System Command Detected in the System Quadlet (cleared by writing a 0)
Set by hardware, cleared by software. If the node address specified in Data quadlet matches the value in MLB_MLBC1.NDA, the device responds either “device present” or “device present, request service” system response in the next system quadlet.
Bit 2 – ULKSYSCMD Network Unlock System Command Detected in the System Quadlet (cleared by writing a 0)
Set by hardware, cleared by software.
Bit 1 – LKSYSCMD Network Lock System Command Detected in the System Quadlet (cleared by writing a 0)
Set by hardware, cleared by software.
Bit 0 – RSTSYSCMD Reset System Command Detected in the System Quadlet (cleared by writing a 0)
Set by hardware, cleared by software.