PM8611-BIAP PMC [PMC-Sierra, Inc], PM8611-BIAP Datasheet - Page 27

• Manufacturer Part Number: PM8611-BIAP
• Manufacturer: PMC [PMC-Sierra, Inc]

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2010883, Issue 2
Pin Name
ITPL
ITAIS
Transmit Serial Data Interface (5 Signals)
TPWRK
TNWRK
TPPROT
TNPROT
TC1FP
Type
Input
Input
Analog
LVDS
Output
Analog
LVDS
Output
Output
Pin
No.
F11
G11
E2
E1
D1
D2
C3
Function
Incoming Tributary Payload (ITPL). This signal is used to
indicate tributary payload when configured for TelecomBus and is
unused when configured for an SBI336 bus.
ITPL is set high during valid VC11 and VC12 bytes of the Incoming
bus. ITPL is set low for all transport overhead bytes, high order
path overhead bytes, fixed stuff column bytes and tributary
transport overhead bytes (V1,V2,V3,V4).
ITPL is sampled on the rising edge of SREFCLK.
Incoming Tributary Alarm Indication Signal (ITAIS). This signal
indicates tributaries in low order path AIS state for the Incoming
TelecomBus and is unused when configured for an SBI336 bus.
ITAIS is set high when the tributary on the Incoming bus is in AIS
state and is set low when the tributary is out of AIS state.
ITAIS is sampled on the rising edge of SREFCLK.
Transmit Working Serial Data. In SBI336 mode, the differential
transmit working serial data link (TPWRK/TNWRK) carries a
transmit 77.76 MHz SBI336 data stream to a downstream working
sink, in bit serial format, SBI336S.
In TelecomBus mode, TPWRK/TNWRK carries the transmit 77.76
MHz TelecomBus data stream to a downstream working sink, in bit
serial format.
Data on TPWRK/TNWRK is encoded in an 8B/10B format
extended from IEEE Std. 802.3. The 8B/10B character bit ‘a’ is
transmitted first and the bit ‘j’ is transmitted last.
TPWRK/TNWRK are nominally 777.6 Mbit/s data streams.
Transmit Protect Serial Data. In SBI336 mode, the differential
transmit protect serial data link (TPPROT/TNPROT) carries a
transmit 77.76 MHz SBI336 data stream to a downstream protect
sink, in bit serial format, SBI336S.
In TelecomBus mode, TPPROT/TNPROT carries the transmit
77.76 MHz TelecomBus data stream to a downstream protection
sink, in bit serial format.
Data on TPPROT/TNPROT is encoded in an 8B/10B format
extended from IEEE Std. 802.3. The 8B/10B character bit ‘a’ is
transmitted first and the bit ‘j’ is transmitted last.
TPPROT/TNPROT are nominally 777.6 Mbit/s data streams.
Transmit Serial SBI Frame Pulse. The transmit serial SBI frame
pulse signal (TC1FP) provides system timing of the transmit serial
interface.
TC1FP is set high to indicate that the C1 frame boundary 8B/10B
character has been serialized out on the transmit working serial
data link (TPWRK/TNWRK) and the transmit protection serial data
link (TPPROT/ TNPROT). TC1FP is output every 4 frame for SBI
mode without CAS and for TelecomBus mode. TC1FP is output
every 48 frames for SBI mode with CAS.
TC1FP is updated on the rising edge of SYSCLK.
SBSLITE™ Telecom Standard Product Data Sheet
Preliminary
26