ttsv02622 ETC-unknow, ttsv02622 Datasheet - Page 22

• Manufacturer Part Number: ttsv02622
• Description: Sts-24 Backplane Transceiver
• Manufacturer: ETC-unknow

TTSV02622 STS-24 Backplane Transceiver
Transmit Direction (Line to Backplane)
Each TOH insert block receives two byte-wide 77.76 MHz data from the line, which nominally represents two
STS-12 streams (A and B). Transport overhead bytes are then optionally inserted into these streams and the
streams are forwarded to the HSI. All byte timing pulses required to isolate individual overhead bytes (e.g., A1, A2,
B1, D1—D12, etc.) are generated internally based on a Frame_Sync received from the system (SYS_FP).
All streams operate byte wide at 77.76 MHz (622 Mbits/s) in all modes.
22
INPUT BUS
A1 and A2 insertion and optional corruption.
H1, H2, and H3 pass through transparently.
B1 calculation (after scrambling), insertion and optional corruption (before scrambling).
Optional K1 and K2 insert.
Optional S1/M0 insert.
Optional E1/F1/E2 insert.
Optional section and line data communication channel (DCC, D1—D12) insertion (for intercard communications
channel).
Scrambling of outgoing data stream with optional scrambler disabling.
Optional stream disabling.
PARITY(1)
SYSTEM
SYSTEM
DATA(8)
FRAME
CLOCK
(SOFT CTL)
LINE LPBK
(SOFT CTL)
EVEN/ODD
(FROM RX)
LINE LPBK
PARITY
TO RX
PAR ERR FLAG
(SOFT REG)
LPBK
MUX
TOH MODE TOH BYTES
(SOFT CTL)
(INS/PASS)
CHECK
BUS
PAR
(COMMON TO
CHANNELS)
77.76 MHz
(TO ALL BLOCKS)
TX SYNC
THE 2 TX
SPE + TOH
DATA IN
SERIAL
CONVERTER
SER TO PAR
TOH
BUFFER
(SOFT CTL)
INS/PASS
TOH
+
SEL
TOH
(COMMON TO
TOH CLOCK
THE 2 CH)
MUX
TOH
Figure 7. Transmitter Block
A1/A2 ERROR A1/A2 ERROR
(SOFT REG)
INSERT
VALUE
A1/A2
ENA (COMMON
TO THE 2 CH)
TOH CLOCK
(SOFT REG)
INSERT-
COUNT
A1/A2
A1/A2
PAR ERR FLAG
MUX
MUX
CTL
(SOFT REG)
B1
A1/A2 ERROR
MUX
INSERTCMD
B1
(SOFT CTL)
(SOFT REG)
B1 ERROR
GENERATOR
MASK
B1 BYTE
PARITY
SCRAMBLER
SCRAMBLER 77.76 MHz
(SOFT CTL)
INSERT CMD
SONET
DISABLE
(SOFT CTL)
B1 ERROR
(FROM PLL)
(MEGACELL
FROM ASIC
TO SERIAL
PARALLEL
VENDOR)
(FROM PLL)
622 MHz
Agere Systems Inc.
LVDS LPBK
June 2003
(TO RX)
OUT#1
LVDS