PM8610-BIAP PMC [PMC-Sierra, Inc], PM8610-BIAP Datasheet - Page 38

• Manufacturer Part Number: PM8610-BIAP
• Description: SBS Telecom Standard Product Data Sheet Preliminary
• Manufacturer: PMC [PMC-Sierra, Inc]

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000168, Issue 3
Pin Name
OTAIS[4]
OTAIS[3]
OTAIS[2]
OTAIS[1]
Incoming SBI Bus (56 Signals)
IC1FP[4]
IC1FP[3]
IC1FP[2]
IC1FP[1]
IC1FP[4]
IC1FP[3]
IC1FP[2]
IC1FP[1]
(continued)
Type
Tristate
Output
Input
Pin No.
AE22
Y1
B7
B14
T24
AE8
Y25
H3
Outgoing Tributary Alarm Indication Signal (OTAIS[4:1]). This
signal indicates tributaries in low order path AIS state for the
corresponding Outgoing TelecomBus and is held low when
configured for SBI or SBI336 buses.
OTAIS[x] is set high when the tributary on the corresponding
Outgoing bus is in AIS state and is set low when the tributary is out
of AIS state.
OTAIS[1] can be part of either a 19.44 MHz TelecomBus when
combined with OTAIS[4:2] or can be used as part of a standalone
77.76 MHz TelecomBus.
OTAIS[4:2] are held tri-state when configured for 77.76 MHz
operation.
OTAIS[x] is updated on the rising edge of SREFCLK.
Incoming C1 Frame Pulse (IC1FP[4:1]). This signal indicates the
first C1 octet on the incoming SBI or TelecomBus.
In SBI/SBI336 mode:
This signal also indicates multiframe alignment which occurs every
4 frames, therefore this signal is pulsed every fourth C1 octet to
produce a 2KHz multiframe signal. The frame pulse does not need
to be repeated every 2KHz as the SBS will flywheel in its absence.
When using the SBI bus in synchronous mode the IC1FP signal
can be used to indicate T1 and E1 multiframe alignment by pulsing
on 48 SBI frame boundaries. This must be done if CAS is to be
switched along with the data.
For both 19.44 MHz SBI and 77.76 MHz SBI336 buses, only
IC1FP[1] is used and IC1FP[4:2] are ignored.
In TelecomBus mode:
This signal may also be pulsed to indicate the J1 byte position and
the byte following J1. The J1 byte position must be locked to an
offset of either 0 or 522. The byte following J1 is used to indicate
multiframe alignment and should only pulse once every 4 frames
marking the frame with the V1s.
IC1FP[1] can be part of either a 19.44 MHz TelecomBus when
combined with IC1FP[4:2] or can be used as part of a standalone
77.76 MHz TelecomBus. When using a 19.44 MHz TelecomBus,
all 4 C1 positions must be aligned and the four signals, IC1FP[4:1],
are logically OR’ed together internally.
IC1FP[4:1] is sampled on the rising edge of SREFCLK.
IC1FP[4:2] have integral pull-up resistors.
Function
SBS Telecom Standard Product Data Sheet
Preliminary
38