PM8610-BIAP PMC [PMC-Sierra, Inc], PM8610-BIAP Datasheet - Page 320

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

14.14 Outgoing SBI Bus Functional Timing
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000168, Issue 3
Figure 46 Outgoing SBI336 Functional Timing
ODATA[1][7:0]
Figure 47 shows the functional timing for 4 outgoing 19.44 MHz SBI buses. When configured
for the SBI bus, timing is provided by a 19.44 MHz SREFCLK sourced from SREFCLK19 which
is generated by the SBS from the 77.76 MHz SYSCLK. Figure 47 shows the timing for a 19.44
MHz SBI bus configured to connect to a physical layer device. In this figure the JUST_REQ[x]
signal is an input to the SBS aligned to OC1FP and is used by the physical layer device to control
the link timing of a slave link layer device. If the SBS is connected to a link layer device, the
JUST_REQ[x] signal would be an output aligned to IC1FP. With the exception of the
JUST_REQ[x] signal, the functional timing of the outgoing SBI bus is the same when connecting
to a physical layer device as connecting to a link layer device.
Figure 47 Outgoing SBI Bus Functional Timing
ODATA[x][7:0]
JUST_REQ[1]
JUST_REQ[x]
SREFCLK19
OACTIVE[1]
OACTIVE[x]
SREFCLK
SREFCLK
OC1FP[1]
SYSCLK
OC1FP
ODP[1]
ODP[x]
OPL[1]
OV5[1]
OPL[x]
OV5[x]
C1
C1
V3
V3
V3
DS0
V3
V3
DS0#
DS0
SBS Telecom Standard Product Data Sheet
V3
V5
DS0#
V5
DS0
DS0
DS0#
Preliminary
DS0#
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