TXC-06412BIOG Transwitch Corporation, TXC-06412BIOG Datasheet - Page 103

• Manufacturer Part Number: TXC-06412BIOG
• Manufacturer: Transwitch Corporation

Specifications of TXC-06412BIOG

• Lead Free Status / RoHS Status: Not Compliant

1 0 3 o f 2 26
1
2
3
4
5
6
7
8
9
B2
A1
B1
1
10.7.1 APS Interface Generator
A1
B2
2
The PHAST-12P generates the APS interface overhead bytes.
• A1, A2, J0, and B1 overhead bytes similar to the STM-4/OC-12 RS (section) overhead
• The high order path data for four STM-1/OC-3 signals or one STM-4/OC-12 signal
• The received and transmitted K1/K2 APS signal for up to four lines
• Signal fail and signal degrade indications for up to four lines
• The SDH/SONET frame alignment signal will be inserted in the A1-A2 bytes
• The signal will be scrambled, except for the first SOH row
• A single byte Trail Trace Identifier (TTI) will be inserted in the J0 byte
• A fixed value (0xCC) will be inserted in the Z0 bytes. Remark the inserted value is differ-
• BIP-8 will be calculated over all bits of the preceding STM-4 like APS frame after scram-
• BIP-96 will be calculated over all bits of the preceding STM-4 frame except the first three
• Rx K1, Tx K1, Rx K2, Tx K2, Status and Request are inserted according to the APS pro-
• AU Pointer bytes are passed
• Unused bytes are set to 0x00
A1
B2
3
• Software will be able to disable scrambling for test purposes
ent from 0x00 to avoid LOS detection.
bling and will be inserted in the B1 byte of the current frame before scrambling
SOH rows and will be inserted in the B2 bytes of the current frame. The software config-
urable B2 bytes have a special behavior, in that the filled in bytes are used as an error-
mask to corrupt the calculated B2 bytes.
tocol
Rx K1 Tx K1
A2
4
AU Pointers
A2
5
Status
A2
6
Rx K2 Tx K2
J0
7
- Operation -
8
Req
9
PRELIMINARY TXC-06412B-MB, Ed. 2
Payload
PHAST-12P Device
DATA SHEET
TXC-06412B
270
June 2005