TXC-04222-AIOG Transwitch Corporation, TXC-04222-AIOG Datasheet - Page 78

• Manufacturer Part Number: TXC-04222-AIOG
• Manufacturer: Transwitch Corporation

Specifications of TXC-04222-AIOG

• Screening Level: Industrial
• Package Type: BGA
• Lead Free Status / Rohs Status: Not Compliant

June 2003
TEMx28
TXC-04222
TXC-04222-MB, Ed. 6
Signal Label
Bits 5, 6, and 7 provide a signal label for the distant end. There are eight possible states. Any value other then
000 represents an equipped VT/TU. The values written into ATnSL1-3 (bits 5-3, register X+065H) and
BTnSL1-3 (bits 5-3, register X+0D5H0, for the A and B side add buses respectively, are transmitted in the V5
byte bits 5-7.
Remote Defect Indication
The TEMx28 supports both single bit and three bit RDI operation. The selection of single bit or three bit RDI is
determined by the value written to control bit TnDISB (bit 0, X+007H). When control bit TnDISB is set to 0,
three bit RDI operation is selected. When this control bit is set to 1, single bit RDI is selected.
Single Bit RDI
Bit 8 in the V5 byte provides a single bit RDI state, as indicated in the following table. ITU Recommendation
G.707 recommends that bits 5, 6, and 7 in the K4 byte be transmitted as 000 or 111.
A single bit RDI state is sent for the following unlatched alarm conditions in the V5 overhead byte of the VT/TU
selected for the A or B Add bus, depending on the states of the RnSEL (active bus selected), TnSEL1 and
TnSEL0 (bus enabled) control bits. RDI is sent for a minimum of 20 multiframes (500 microseconds per multi-
frame).
- When control bit RDI enable (RnDIEN) is 1:
- When RDI enable (RnDIEN) is 0:
- Drop bus loss of clock (ADLOC, BDLOC) when DLCRE is a 1
- Upstream AIS in H1/H2 or the E1 byte (AxUAIS, BxUAIS), when HEAISE and URDIE are a 1
- VT/TU AIS (AnAIS, BnAIS)
- VT/TU Loss of Pointer (AnLOP, BnLOP)
- VC AIS (AnVCAIS, BnVCAIS) when VCRDIE is a 1
- Unequipped (AnUNEQ, BnUNEQ), when UQRDIE is 1
- J2 Loss of Lock (AnJ2LOL, BnJ2LOL), when J2RDIE is a 1
- J2 Mismatch (AnJ2TIM, BnJ2TIM), when J2RDIE is 1
- Microprocessor writes a 1 to ATnRDIS, BTnRDIS
- Microprocessor writes a 1 to ATnRDIS, BTnRDIS
Proprietary TranSwitch Corporation Information for use Solely by its Customers
Bit 8 V5
0
1
No defect indications.
Remote Defect Indication
DATA SHEET
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Definition