30
Maxim Integrated
Evaluates: DS34S132
DS34S132 Evaluation Kit
4.3.1 Configuring E1 Interfaces
Figure 4-5. E1 Interface Configuration (Main Menu
→
Interface Configuration
→
E1 Interface Configuration)
Table 4-4. E1 Interface Configuration Parameter Descriptions
MAIN MENU
↓
INTERFACE
CONFIGURATION
↓
E1 INTERFACE
CONFIGURATION
E1 Interface Configuration for link 1
1. Frame Type UnFramed
2. Rx Config Gain Limit Short Haul
3. OOS Code Type OOS Code
4. Data TX/RX OOS[0 - 0xFF] 7F
6. TX/RX OOS Signal Mask Space
7. Clock Source Internal
8. Link Sync CCITT
9. Connect/Disconnect Connect
10. CRC4 No
11. IF Type Balanced
26. Master’s Side Clock Source Stratum 1
32. Network Type Router based
33. Clock Recovery Debug Tool Extended Statistics
38. ADCL PPM 0.000000
39. One or Two Clock Mode One Clock
40. Adaptive or Differential Mode Adaptive
41. RTP Timestamp Generation Mode Bit
Please select item <1 to 41>
q: exit, s: save, ESC: previous menu, r or Enter: reprint screen
Please enter your choice:
NOTE:
THE SETTINGS FOR SOME PARAMETERS IN THIS CONFIGURATION MENU DETERMINE WHETHER OR NOT OTHER PARAMETERS IN THE MENU ARE
DISPLAYED. FOR EXAMPLE, IF
RECOVERY CLK MODE
IS SET TO
AUTO
, THEN ITEMS 13–25 AND 27–31 ARE NOT DISPLAYED BECAUSE THEIR VALUES ARE
IGNORED IN THAT MODE. THE PARAMETER DESCRIPTIONS IN TABLE 4-4 HAVE NOTES INDICATING THE NECESSARY CONDITIONS FOR A PARAMETER TO BE
DISPLAYED. SEE THE
ACQUISITION SWITCH
PARAMETER.
PARAMETER
DESCRIPTION
POSSIBLE VALUES
Frame Type
Framing mode and operation mode for each con-
figuration.
Note: Before changing the E1 frame type, you
must close all bundles assigned to the link.
Unframed:
Framer is configured to pass-through mode
and the operation mode is set to unframed.
Framed:
The E1 framer is set for simple FAS/NFAS
framing and the TDMoP block is set to fractional.
Multiframe:
The E1 framer is set to MF mode and the
TDMoP block is set to fractional with CAS.
Default: UnFramed
Rx Config Gain
Limit
Determines the maximum attenuation of the
receive signal that can be compensated for by
the E1 link receive path, to obtain the BER perfor-
mance required by the standards.
Long Haul:
Maximum attenuation of 36dB.
Short Haul:
Maximum attenuation of 10dB. This con-
figuration can actually improve the performance when
operating over relatively short line sections, especially
when operating over multipair cables. In such cables,
significant interference is generated by the signals
carried by other pairs, and therefore a weak desired
signal can be masked by the interference.
Default: Short Haul
OOS Code Type
Defines what to send if an OOS state occurred.
OOS Code:
OOS code is sent
Default: OOS code
