PM8610-BIAP PMC [PMC-Sierra, Inc], PM8610-BIAP Datasheet - Page 30

• 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
RC1FP
Receive SBI336 Interface (14 Signals)
RDATA[7]
RDATA[6]
RDATA[5]
RDATA[4]
RDATA[3]
RDATA[2]
RDATA[1]
RDATA[0]
RDP
Type
Input
Input
Input
Pin No.
AF24
B9
C10
D11
B10
C11
A10
B11
D12
A8
Receive Serial Frame Pulse. The receive serial SBI336S frame
pulse signal (RC1FP) provides system timing of the receive serial
interface. When using the receive parallel interface, this signal
indicates the first C1 byte on the bus.
Using the Receive Serial Interface:
When using the receive serial interface, RC1FP is set high once
every multiframe (4 frames for SBI without CAS, 48 frames for SBI
with CAS, and 4 frames for TelecomBus), or multiple thereof. The
RC1FP_DLY[13:0] bits (register 007H) are used to align the C1
frame boundary 8B/10B character on the receive serial interface
(RPWRK/RNWRK and RPPROT/RNPROT) with RC1FP.
Using the Receive Parallel Interface:
In SBI 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 RC1FP 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.
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.
RC1FP is sampled on the rising edge of SYSCLK.
Receive Data (RDATA[7:0]). This is the receive SBI336 data bus
when configured for SBI336 byte-wide interface instead of the
Serial SBI336S interface. When in TelecomBus mode this is the
data bus for 77.76 MHz TelecomBus. The receive data bus is a
time division multiplexed bus which transports tributaries by
assigning them to fixed octets within the SBI or TelecomBus
structure.
In SBI336 mode, multiple devices can drive this bus at uniquely
assigned tributary columns within the SBI336 bus structure.
RDATA[7:0] is sampled on the rising edge of SYSCLK.
RDATA[7:0] have integral pull-up resistors.
Receive Data Parity (RDP). This is the receive data bus parity
when configured for the Receive byte-wide interface. This signal
carries the even or odd parity for the receive bus signals. In SBI336
mode, the parity calculation encompasses the RDATA[7:0], RPL
and RV5 signals. In TelecomBus mode, the parity calculation
encompasses the RDATA[7:0] and optionally the RC1FP and RPL
signals.
Multiple devices can drive this signal at uniquely assigned tributary
columns within the fixed structure. This parity signal is intended to
detect multiple sources in the column assignment.
RDP is sampled on the rising edge of SYSCLK.
RDP has an integral pull-up resistor.
Function
SBS Telecom Standard Product Data Sheet
Preliminary
30