
PM5317 SPECTRA-9953 Telecom Standard Product Data Sheet
Release
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2000741, Issue 5
49
Pin Name
TLD2
TLD3
TLD4
Type
Pin No.
Function
signal contains the line DCC (D4-D12) to be transmitted.
In STS-192/STM-64 mode, only TLD1 is active.TLD2-4 is
undefined.
TLD1-4 is sampled on the rising edge of TLDCLK1-4 and
TOHFP1-4 is used to identify the MSB of the D4 byte on
TLD1-4. The TTOH1-4 and TTOHEN1-4 inputs take
precedence over TLD1-4.
B11
B10
A9
13.3 Receive Section/Line Overhead Extraction Signals
Pin Name
Type
Pin
No.
Function
ROHCLK1
ROHCLK2
ROHCLK3
ROHCLK4
Output
AM12
AP11
AL12
AN11
The
receive overhead clock
(ROHCLK1-4) signal provides
timing for the receive section, line overhead and B3E
extraction. These clocks are derived from the receive line
clocks RXCLK1-4.
In STS-192/STM-64 mode, ROHCLK1 is a nominal
82.94 MHz clock generated by gapping a 103.68 MHz clock.
ROHCLK1 has a 50% nominal high duty cycle. ROHCLK2-4
are not defined.
In quad STS-48/STM-4 mode, ROHCLK1-4 is a nominal
82.94 MHz clock generated by gapping a 103.68 MHz clock.
ROHCLK1-4 has a 50% nominal high duty cycle.
ROHFP1-4, RTOH1-4 and B3E1-4 are updated on the rising
edge of ROHCLK1-4.
ROHFP1
ROHFP2
ROHFP3
ROHFP4
Output
AL13
AN12
AM13
AP12
The
receive overhead frame pulse
(ROHFP1-4) signal
provides timing for the receive section, line overhead and B3E
extraction.
In STS-192/STM-64 mode, ROHFP1 is used to indicate the
most significant bit (MSB) on RSLD1, RLD1, RTOH1-4 and
the first possible path BIP error on B3E1-4. ROHFP2-4 are
not defined.
In quad STS-48/STM-16 mode, ROHFP1-4 is used to indicate
the most significant bit (MSB) on RSLD1-4, RLD1-4, RTOH1-
4 and the first possible path BIP error on B3E1-4.
ROHFP1-4 can be sampled on the rising edge of RSLDCLK1-
4 and RLDCLK1-4. ROHFP1-4 can be sample on the rising
edge of ROHCLK1-4.
ROHFP1-4 is updated on the rising edge of ROHCLK1-4.
RTOH1
RTOH2
RTOH3
RTOH4
Output
AM14
AP15
AL14
AN13
The
receive transport overhead
(RTOH1-4) signal contains
the received transport overhead bytes (A1, A2, J0, Z0, B1, E1,
F1, D1-D3, H1-H3, B2, K1, K2, D4-D12, Z1/S1, Z2/M1, E2
and other overhead bytes) extracted from the incoming
stream.
RTOH1-4 is updated on the rising edge of ROHCLK1-4.