Visible to Intel only — GUID: olg1578603434738
Ixiasoft
Visible to Intel only — GUID: olg1578603434738
Ixiasoft
9.2.24.6. Enabling and Disabling Electrical Idle Detector Filtering and Reading Electrical Idle Detector Status
Electrical Idle Detector Filtering Controls
The signal_ok_config 16-bit register controls electrical idle detector filtering.
To read:
- Use attribute code 0x002C and {0x85[7:0],0x84[7:0]}: 0x11C. The value is returned on registers {0x89[7:0],0x88[7:0]}.
To write:
- Use attribute code 0x0020 and {0x85[7:0],0x84[7:0]}: 0x20.
- Use attribute code 0x002C and {0x85[7:0],0x84[7:0]}: 0x11C.
- Use attribute code 0x006C and {0x85[7:0],0x84[7:0]}:
- 0x84[0] to enable 0x4027[4] to track electrical idle instead of its normal use.
- 0x84[1] to cause 0x4027[4] to oscillate when a signal is detected.
- 0x84[2] to enable DFE tuning based electrical idle detector detection
- 0x84[3] is reserved
- 0x84[7:4], 0x85[7:0], if 0x84[2] is 0, to set the number of consecutive polling loops of electrical idle that it must be high before 0x4027[4] goes high. If 0x84[0] is 0, there is no effect.
- 0x84[7:4], 0x85[7:0], if 0x84[2] is 1, to set the eye height threshold for DFE based on the electrical idle detector. If 0x84[0] is 0, there is no effect.
Enabling and Disabling Electrical Idle Detector Filtering
To enable electrical idle detector filtering:
- Use attribute code 0x0020 and {0x85[7:0],0x84[7:0]}: 0x20.
- Use attribute code 0x002C and {0x85[7:0],0x84[7:0]}: 0x11C.
- Use attribute code 0x006C and {0x85[7:0],0x84[7:0]}: 0xFFF1.
To enable electrical idle detector filtering based on DFE tuning:
- Use attribute code 0x0020 and {0x85[7:0],0x84[7:0]}: 0x20.
- Use attribute code 0x002C and {0x85[7:0],0x84[7:0]}: 0x11C.
- Use attribute code 0x006C and {0x85[7:0],0x84[7:0]}: 0x0155.
To disable any mode of electrical idle detector filtering:
- Use attribute code 0x0020 and {0x85[7:0],0x84[7:0]}: 0x0.
- Use attribute code 0x002C and {0x85[7:0],0x84[7:0]}: 0x11C.
- Use attribute code 0x006C and {0x85[7:0],0x84[7:0]}: 0x0.
Reading Electrical Idle Detector Status
After electrical idle detector filtering is enabled, to read the electrical idle detector status:
- Use attribute code 0x4027 and {0x85[7:0],0x84[7:0]}: 0x0. The value is returned on registers {0x89[7:0],0x88[7:0]}: 0x30 for no signal and 0x20 for signal present.
- If the rx_pma_elecidle port is enabled, use that port to monitor the electrical idle detector filtering.
- When electrical idle detector filtering is enabled, rx_is_lockedtodata is no longer readable through its register and port.