PMC PM8621-BIAP Datasheet

PM8621
NSE-8G
NSE-8G™ Standard Product Data Sheet
Preliminary
8G Narrowband Switch Element
Data Sheet
Issue 1: May, 2001
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use Document ID: PMC- PMC-2010850, Issue 1
NSE-8G™ Standard Product Data Sheet
Preliminary
Legal Information
Copyright
© 2001 PMC-Sierra, Inc.
The information is proprietary and confidential to PMC-Sierra, Inc., and for its customers’ internal use. In any event, you cannot reproduce any part of this document, in any form, without the express written consent of PMC-Sierra, Inc.
PMC-2010850, (P1)
Disclaimer
None of the information contained in this document constitutes an express or implied warranty by PMC-Sierra, Inc. as to the sufficiency, fitness or suitability for a particular purpose of any such information or the fitness, or suitability for a particular purpose, merchantability, performance, compatibility with other parts or systems, of any of the products of PMC-Sierra, Inc., or any portion thereof, referred to in this document. PMC-Sierra, Inc. expressly disclaims all representations and warranties of any kind regarding the contents or use of the information, including, but not limited to, express and implied warranties of accuracy, completeness, merchantability, fitness for a particular use, or non-infringement.
In no event will PMC-Sierra, Inc. be liable for any direct, indirect, special, incidental or consequential damages, including, but not limited to, lost profits, lost business or lost data resulting from any use of or reliance upon the information, whether or not PMC-Sierra, Inc. has been advised of the possibility of such damage.
Trademarks
S/UNI is a registered trademark of PMC-Sierra, Inc. and NSE-8G, SBS, CHESS, TEMUX-84, AAL1gator-32, SPECTRA, FREEDM-336, and SBI are trademarks of PMC-Sierra, Inc.
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Contacting PMC-Sierra
PMC-Sierra 8555 Baxter Place Burnaby, BC Canada V5A 4V7
Tel: (604) 415-6000 Fax: (604) 415-6200
Document Information: document@pmc-sierra.com Corporate Information: info@pmc-sierra.com Technical Support: apps@pmc-sierra.com Web Si te: http://www.pmc-sierra.com
NSE-8G™ Standard Product Data Sheet
Preliminary
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NSE-8G™ Standard Product Data Sheet
Preliminary

Table of Contents

1 Features..................................................................................................................... 11
2 Applications ...............................................................................................................12
3 References ................................................................................................................13
4 Application Examples ................................................................................................ 14
5 Block Diagram ...........................................................................................................17
6 Description.................................................................................................................19
7 Pin Diagram ...............................................................................................................20
8 Pin Description........................................................................................................... 24
8.1 Pin Description Table ........................................................................................24
8.2 Analog Power Filtering Recommendations.......................................................38
9 Functional Description ...............................................................................................40
9.1 LVDS Overview .................................................................................................40
9.1.1 LVDS Receiver (RXLV) ........................................................................41
9.1.2 LVDS Transmitter (TXLV).....................................................................41
9.1.3 LVDS Transmit Reference (TXREF) ....................................................41
9.1.4 Data Recovery Unit (DRU)...................................................................42
9.1.5 Parallel to Serial Converter (PISO) ......................................................42
9.1.6 Clock Synthesis Unit (CSU) .................................................................42
9.2 Receive 8B/10B Frame Aligner (R8TD) ............................................................ 42
9.2.1 FIFO Buffer...........................................................................................42
9.3 Transmit 8B/10B Encoder (T8TE).....................................................................43
9.3.1 SBI336S 8B/10B Character Encoding .................................................43
9.3.2 Serial TelecomBus 8B/10B Character Encoding..................................44
9.3.3 Serial SBI336S and TelecomBus Alignment ........................................ 46
9.3.4 Character Alignment Block ...................................................................46
9.3.5 Frame Alignment ..................................................................................47
9.3.6 SBI336S Multiframe Alignment ............................................................49
9.4 DS0 Cross Bar switch (DCB) ............................................................................ 49
9.5 Clock Synthesis and Transmit Reference Digital Wrapper (CSTR)..................50
9.6 Fabric Latency................................................................................................... 50
9.7 JTAG Support....................................................................................................50
9.8 Microprocessor Interface ..................................................................................50
9.9 In-band Link Controller (ILC).............................................................................51
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NSE-8G™ Standard Product Data Sheet
Preliminary
9.9.1 In-Band Signaling Channel Fixed Overhead........................................52
9.10 Microprocessor Interface ..................................................................................53
10 Normal Mode Register Description............................................................................57
11 Test Features Description ........................................................................................125
11.1 Master Test and Test Configuration Registers ................................................ 125
11.2 JTAG Test Port ................................................................................................127
11.2.1 Boundary Scan Cells.......................................................................... 131
12 Operation .................................................................................................................134
12.1 Software Default Settings ...............................................................................134
12.1.1 Setting the T8TE Time-slot Configuration #1 Register....................... 134
12.1.2 Setting the T8TE Time-slot Configuration #2 Register....................... 134
12.1.3 Configuring the NSE-8G to Use Fewer Links ....................................134
12.1.4 PCB Design Notes .............................................................................136
12.2 “C1” Synchronization.......................................................................................136
12.3 Synchronized Control Setting Changes .......................................................... 137
12.3.1 SBS/NSE-8G Systems with DS0 and CAS Switching .......................137
12.3.2 SBS/NSE-8G Systems Switching DS0s without CAS........................ 139
12.3.3 SBS/NSE-8G non-DS0 Level Switching with SBI336 Devices ..........141
12.4 NSE-8G CPU Interaction with the Switching Cycle When Using the ILC ....... 142
12.5 Controlling Frame Alignment in the Receive Port ........................................... 143
12.6 DS0 Cross-Bar Switch (DCB) Operation ........................................................144
12.6.1 Configuring the DCB using Port Transfer Mode.................................144
12.6.2 Configuring the DCB using Word transfer mode:............................... 145
12.6.3 Reading Configurations...................................................................... 146
12.6.4 DCB Online to Offline Memory Page Copy........................................146
12.7 Telecombus Mode Operation ..........................................................................147
12.8 SBI Column Mode Operation .......................................................................... 147
12.9 SBI DS0 Mode Operation ...............................................................................148
12.10 SBI DS0 with CAS Mode Operation................................................................148
12.11 ILC Operation..................................................................................................149
12.12 ILC CPU Operations .......................................................................................149
12.12.1 Accessing the Transmit Message FIFO .............................................149
12.12.2 Accessing the Receive Message FIFO ..............................................150
12.12.3 Handling the Transmit Header ...........................................................153
12.12.4 Handling the Receive Header ............................................................ 154
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NSE-8G™ Standard Product Data Sheet
Preliminary
12.12.5 Handling Interrupts .............................................................................154
12.12.6 Bypass Function.................................................................................154
12.13 Switch Setting Algorithm .................................................................................156
12.13.1 Problem Description ...........................................................................156
12.13.2 Naïve Algorithm .................................................................................. 157
12.13.3 Bi-partite graphs ................................................................................. 159
12.13.4 Unicast ...............................................................................................160
12.13.5 Experimental Results .........................................................................162
12.13.6 Multicast .............................................................................................162
12.14 JTAG Support.................................................................................................. 163
12.14.1 TAP Controller ....................................................................................164
12.14.2 States..................................................................................................164
12.14.3 Instructions .........................................................................................166
13 Functional Timing.....................................................................................................167
13.1 Receive Interface Timing ................................................................................167
13.2 Transmit Interface Timing................................................................................168
14 Absolute Maximum Ratings ..................................................................................... 170
15 D.C. Characteristics.................................................................................................171
16 Microprocessor Interface Timing Characteristics ....................................................173
17 A.C. Timing Characteristics .....................................................................................176
17.1 Input Timing.....................................................................................................176
1.1 Reset Timing ...................................................................................................177
17.2 Serial SBI Bus Interface ..................................................................................178
17.3 JTAG Port Interface.........................................................................................178
18 Ordering and Thermal Information ..........................................................................180
18.1 Packaging Information ....................................................................................180
18.2 Thermal Information ........................................................................................180
19 Mechanical Information ........................................................................................... 182
Notes ...............................................................................................................................183
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NSE-8G™ Standard Product Data Sheet
Preliminary

List of Registers

Register 000H: NSE-8G Master Reset..............................................................................58
Register 001H: NSE-8G Individual Channel Reset ...........................................................59
Register 002H: NSE-8G Master JTAG ID .........................................................................60
Register 003H: SBS Page select – Page 0 ....................................................................... 61
Register 004H: SBS Page select – Page 1 ....................................................................... 62
Register 005H: NSE-8G Master Interrupt Source .............................................................63
Register 006H: NSE-8G Master ILC Interrupt Source ......................................................65
Register 007H: NSE-8G Master R8TD Interrupt Source................................................... 66
Register 008H: NSE-8G Master T8TE Interrupt Source ...................................................67
Register 009H: NSE-8G Master Clock Monitor ................................................................. 68
Register 00AH: NSE-8G DCB CMP select........................................................................69
Register 00BH: NSE-8G Interrupt Enable Register ..........................................................70
Register 00CH: NSE-8G Subsystem Interrupt Enable Register ....................................... 71
Register 00DH: NSE-8G R8TD TIP register .....................................................................72
Register 00EH: SBS User Bit 0 ......................................................................................... 73
Register 00FH: SBS User Bit 1 .........................................................................................74
Register 010H: SBS User Bit 2 .........................................................................................75
Register 011H: NSE-8G FREE User Register...................................................................76
Register 012H: Correct R8TD_RX_C1 Pulse Monitor ......................................................77
Register 013H: Unexpected R8TD_RX_C1 Interrupt........................................................ 78
Register 014H: Missing R8TD_RX_C1 Interrupt............................................................... 79
Register 015H: Unexpected R8TD_RX_C1 Interrupt Enable ...........................................80
Register 016H: Missing R8TD_RX_C1 Interrupt Enable ..................................................81
Register 020H, 024H: CSTR #1 – 2 Control* ....................................................................82
Register 021H, 025H: CSTR #1 – 2* Interrupt Enable and CSU Lock Status .................. 83
Register 022H, 026H: CSTR #1 – 2* Interrupt Indication.................................................. 84
Register 044H: DCB Configuration port 11-6 Register......................................................85
Register 045H: DCB Configuration port 5-0 Register .......................................................86
Register 046H: DCB Configuration Output Register. ........................................................87
Register 047H: DCB Access Mode Register .....................................................................88
Register 048H: DCB C1 delay (RC1DLY) register. .......................................................... 91
Register 04AH: DCB Frame size Register ........................................................................92
Register 04CH: DCB Configuration Register ....................................................................93
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NSE-8G™ Standard Product Data Sheet
Preliminary
Register 04DH: DCB Interrupt status Register..................................................................96
Register 100H + N*20H, R8TD Control and Status...........................................................97
Register 101H + N*20H, R8TD Interrupt Status................................................................99
Register 102H + N*20H, R8TD Line Code Violation Count ............................................101
Register 103H + N*20H, RXLV and DRU Control ...........................................................102
Register 108H + N*20H, T8TE Control and Status .........................................................104
Register 109H + N*20H, T8TE Interrupt Status ..............................................................106
Register 10AH + N*20H: T8TE Time-slot Configuration #1 ............................................107
Register 10BH + N*20H: T8TE Time-slot Configuration #2 ............................................108
Register 10CH + N*20H, T8TE Test Pattern ...................................................................109
Register 10DH + N*20H, TXLV and PISO Control .......................................................... 110
Register 110H + N*20H, ILC Transmit FIFO Data........................................................... 111
Register 111h + N*20H, ILC Transmit Control Register .................................................112
Register 112h + N*20H, ILC Transmit Misc.Status and FIFO Synch Register................ 113
Register 113h + N*20H, ILC Receive FIFO Data Register.............................................. 115
Register 114h + N*20H, ILC Receive Control Register ................................................... 116
Register 115h + N*20H, ILC Receive Auxiliary, Status and FIFO Synch Register.......... 117
Register 116h + N*20H, ILC Interrupt Enable and Control Register ............................... 121
Register 117h + N*20H: ILC Interrupt Reason Register.................................................. 124
Register 800H: NSE-8G Master Test ..............................................................................126
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NSE-8G™ Standard Product Data Sheet
Preliminary
List of Figures
Figure 1 An OC-48 T1/E1 ADM (Individually Drop/Add any T1/E1 in STS-48) ..............14
Figure 2 An OC-48 T1/E1 ADM (Drop/Add up to STS-48 at STS-1 Granularity)............14
Figure 3 Any-Service-Any-Port TDM Access Solution ....................................................15
Figure 4 Any-Service-Any-Port DS0-Granularity PHY Card ...........................................16
Figure 5 NSE- 8G Block Diagram Showing Functional Blocks .......................................17
Figure 6 NSE-8G UBGA-480 Ball Diagram (Bottom-View) .............................................20
Figure 7 Analog Power Filter Circuit................................................................................39
Figure 8 Generic LVDS Link Block Diagram ...................................................................40
Figure 9 Character Alignment State Machine .................................................................47
Figure 10 Frame Alignment State Machine.....................................................................48
Figure 11 In-Band Signaling Channel Message Format ................................................. 52
Figure 12 In-Band Signaling Channel Header Format ....................................................52
Figure 13 Input Observation Cell (IN_CELL) ................................................................131
Figure 14 Output Cell (OUT_CELL) ..............................................................................132
Figure 15 Bidirectional Cell (IO_CELL) .........................................................................132
Figure 16 Layout of Output Enable and Bidirectional Cells...........................................133
Figure 17 Shutting Down a Link ....................................................................................135
Figure 18 “C1” Synchronization Control........................................................................137
Figure 19 TEMUX-84™/SBS/NSE/SBS/AAL1gator-32™ system DS0 Switching
with CAS .......................................................................................................138
Figure 20 CAS Multiframe Timing .................................................................................139
Figure 21 Switch Timing DSOs with CAS .....................................................................139
Figure 22 TEMUX-84/SBS/NSE/SBS/FREEDM-336 System DS0 Switch no
CAS...............................................................................................................140
Figure 23 Switch Timing - DSOs without CAS ..............................................................141
Figure 24 Non DS0 Switch Timing ................................................................................142
Figure 25 Architecture of the RAM Input Interface........................................................144
Figure 26 C1 Position in the First Row..........................................................................149
Figure 27 Transport Overhead Affected by ILC ............................................................155
Figure 28 Example Graph .............................................................................................158
Figure 29 Time:Space:Time Switching in one NSE-8G and four Single-Ported
SBSs .............................................................................................................158
Figure 30 Example Graph .............................................................................................160
Figure 31 Example Problem..........................................................................................161
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NSE-8G™ Standard Product Data Sheet
Preliminary
Figure 32 Merged Graph ...............................................................................................161
Figure 33 Relabeled Graph ...........................................................................................162
Figure 34 Boundary Scan Architecture .........................................................................163
Figure 35 TAP Controller Finite State Machine.............................................................164
Figure 36 Receive Interface Timing ..............................................................................167
Figure 37 Transmit Interface Timing .............................................................................168
Figure 38 CMP Timing ..................................................................................................169
Figure 39 Microprocessor Interface Read Timing .........................................................173
Figure 40 Microprocessor Interface Write Timing .........................................................175
Figure 41 NSE-8G Input Timing ....................................................................................176
Figure 42 RSTB Timing.................................................................................................177
Figure 43 JTAG Port Interface Timing...........................................................................179
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NSE-8G™ Standard Product Data Sheet
Preliminary

List of Tables

Table 1 Analog Power Filters ..........................................................................................39
Table 2 SBI336S Character Encoding ............................................................................43
Table 3 Serial TelecomBus Character Encoding ............................................................45
Table 4 Switching Control RAM Layout...........................................................................50
Table 5 In-band Message Header Fields ........................................................................52
Table 6 NSE-8G Register Map........................................................................................54
Table 7 TX FIFO Message Level ..................................................................................114
Table 8 RX FIFO Message Level ..................................................................................119
Table 9 RXFIFO Threshold Values ...............................................................................122
Table 10 RXFIFO Timeout Delay .................................................................................. 123
Table 11 Test Mode Register Memory Map .................................................................. 125
Table 12 Instruction Register (Length - 3 bits) ..............................................................127
Table 13 Identification Register.....................................................................................127
Table 14 Boundary Scan Register ................................................................................128
Table 15 Absolute Maximum Ratings............................................................................170
Table 16 D.C Characteristics ........................................................................................171
Table 17 Microprocessor Interface Read Access .........................................................173
Table 18 Microprocessor Interface Write Access..........................................................175
Table 19 NSE-8G Input Timing (Figure 40) ..................................................................176
Table 20 RSTB Timing (Figure 41 ) ..............................................................................177
Table 21 Serial SBI Bus Interface ................................................................................. 178
Table 22 JTAG Port Interface ( Figure 42) .................................................................... 178
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1 Features
The Narrowband Switch Element 8G (NSE-8G):
Implements a Scaleable Bandwidth Interconnect (SBI™) DS0 granularity Space switch.
Implements a SONET/SDH VT1.5/VT2/TU11/TU12 granularity Space switch for the serial
777.6 MHz LVDS TelecomBus.
With an allied PM8610 SBS or PM8611 SBS-lite device, implements a DS0 granularity
Memory-Space-Memory switch.
Supports 12 STS-12 equivalent serial ports via 777.6 MHz, 8B/10B encoded LVDS links
(each port can be either Serial TeleCombus or Serial SBI336S)
When configured for SBI mode, switches DS0 or N*DS0 for all T1 and E1 tributaries and
aggregate columns for switching T1, E1, TVT1.5, TVT2, DS3 and E3 tributaries.
When configured for the serial 777.6 MHz TelecomBus interface, switches any SONET/SDH
virtual tributary (VT) or tributary unit (TU) up to STS-1.
NSE-8G™ Standard Product Data Sheet
Preliminary
Supports switching of arbitrary non-standard octet aggregates.
Supports unicast, multicast, and broadcast for all switching modes.
Provides 8 Gbit/s (96,768 DS0s, 4.032 T1s/VT1.5s, 3,024 E1s/VT2s, 144 DS3s/E3s)
switching.
Works with SBS devices that support up to four 19.44 MHz SBI or one 77.76 MHz SBI336
bus that communicates with PMC-Sierra’s SBI device family. Alternatively, the SBS and SBS-lite devices support up to four 19.44 MHz STS-3 TelecomBuses or one 77.76 MHz STS­12 TelecomBus for connection with PMC-Sierra’s SPECTRA family of devices.
Can be combined in applications with PMC-Sierra’s CHESS™ chip set devices (PM5374
TSE and PM5307 TBS).
Supports a microprocessor interface used to configure/control the NSE and make DS0-
granularity switch settings.
Supports clean error checked 8 Mbit/s full-duplex, in-band communications channels from its
attached microprocessor to the attached microprocessors of each of the 12 attached SBS336S devices. This channel is used to initialize and control the SBSs, or other such devices, and to implement call-establishment set-up changes.
Supports JTAG for all non-LVDS signals.
Requires dual power supplies at 1.8V and 3.3V.
Packaged as a 480 ball UBGA.
In conjunction with the SBS or SBS-lite, supports “1+1” and “1:N” fabric redundancy.
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2 Applications
The PM8621 Narrowband Switch Element 8G (NSE-8G) supports a variety of flexible Layer 1/Layer 2 architectures in combination with the following PMC-Sierra devices:
PM8610 SBS and PM8611 SBS-lite (SBI Serializer and Memory switching stage).
SBI bus devices (TEMUX™/TEMAP, FREEDM devices, S/UNI®-IMA devices,
AAL1gator™ devices and other future devices).
CHESS™ chip set devices (PM5374 TSE, PM5307 TBS, PM5315 SPECTRA™-2488, and
PM7390 S/UNI®-MACH48).
These architectures include:
T1/E1 SONET ADMs.
TDM ASAP applications.
PHY cards with DS0 (and above) level switching.
NSE-8G™ Standard Product Data Sheet
Preliminary
PSTN replacement switching cores, as part of any-service-any-port applications, and
Voice Gateways.
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3 References
1. ANSI - T1.105-1995, “Synchronous Optical Network (SONET) – Basic Description
including Multiplex Structure, Rates, and Formats”, 1995.
2. Telcordia - SONET Transport Systems: Common Generic Criteria, GR-253-CORE, Issue 2,
Revision 2, January 1999.
3. ITU, Recommendation G.707 - "Digital Transmission Systems – Terminal equipments -
General", March 1996.
4. IEEE 802.3, “Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access
Method and Physical Layer Specifications”, Section 36.2, 1998.
5. A.X. Widmer and P.A. Franaszek, “A DC-Balanced, Partitioned-Block, 8B/10B Transmission
Code,” IBM Journal of Research and Development, Vol. 27, No 5, September 1983, pp 440-
451.
NSE-8G™ Standard Product Data Sheet
Preliminary
6. U.S. Patent No. 4,486,739, P.A. Franaszek and A.X. Widmer, “Byte Oriented DC Balanced
(0,4) 8B/10B Partitioned Block Transmission Code,” December 4, 1984.
7. IEEE Std 1596.3-1996, “IEEE Standard for Low-Voltage Differential Signals (LVDS) for
Scalable Coherent Interface (SCI)”, Approved March 21, 1996
8. L.R. Ford, D.R. Fulkerson, “Flows in Networks'', Maximum Cardinality Matchings in
Bipartite Graphs
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4 Application Examples
Figure 1 illustrates an OC-48 SONET Ring Add/Drop Multiplexer. The PM5363 TUPP-622 devices align all paths to transport frames in preparation for VT1.5/VT2 granularity switching. The PM8610 SBI336 Bus Serializer (SBS™) an PM8621 Narrowband Switching Element 8G (NSE-8G™) devices support VT1.5/VT2 and above switching. The Add and Drop buses are provided by the SBSs that are not in the SONET Ring path. In this case, they connect to T1 and E1 mapper ports.
Figure 1 An OC-48 T1/E1 ADM (Individually Drop/Add any T1/E1 in STS-48)
NSE-8G™ Standard Product Data Sheet
Preliminary
SPECTRA-
2488
4 X
TUPP-
622
4 X
SBS
NSE20G
4 X
SBS
SBS
**
42 required to terminate
4 X
TUPP-
622
4 X
TEMAP
-84
SPECTRA-
2488
4 X
OCTAL
-LIU **
links for all 4 TEMAPS
Figure 2 illustrates another OC-48 SONET Ring ADM. In this application, the network of three PM5310 TelecomBus Serializers (TBSs) from PMC-Sierra’s CHESS™ chip set add, drop, and groom traffic at STS-1 granularities. The four TUPP-622 devices align any dropped STS-1s (paths to transport frames). The virtual tributary (VT) or tributary unit (TU) switching solution is provided by the SBS-NSE-8G-SBS network below the TUPP-622s. Four SBSs support up to an STS-48 amount of add/drop traffic.
Figure 2 An OC-48 T1/E1 ADM (Drop/Add up to STS-48 at STS-1 Granularity)
SPECTA-
2488
TBS TBS
SPECTA-
2488
TBS
4 X
TUPP-
622
4 X
SBS
SBS
SBS
NSE8G
SBS
SBS
SBI device SBI device SBI device SBI device SBI device SBI device SBI device SBI device SBI device SBI device SBI device SBI device SBI device SBI device SBI device SBI device
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NSE-8G™ Standard Product Data Sheet
Preliminary
Figure 3 illustrates the organization of the access line size card(s) from a SONET Any Service Any Port (ASAP) product. All traffic from the NSE-8G to the SBI link layer devices is path­aligned. See Figure 4 for a description of the PHY line cards compatible with the system in Figure 3.
Figure 3 Any-Service-Any-Port TDM Access Solution
SBS-
lite
SBS
NSE8G
SBS
SBS
FREEDM-
336
4 X
IMA-84
12 X
AAL1gator-
32
4 X
TEMUX-84
H-MVIP
Any-PHY
(Packet)
Any-PHY
(Cell)
Any-PHY
(Cell)
Processors
DSP
T1/E1/DS0/N*DS0 Layer 2 Processing
Figure 4 shows the organization of a SONET PHY card compatible with Figure 3. As shown, both Figure 3 and Figure 4 have NSE-8Gs, but only one instance of this device is required to connect all the SBSs. A likely packaging of this combined system would place the NSE-8G (and a standby NSE-8G) on separate fabric cards. In Figure 4, PM8315 TEMUXs align paths to transport frames. Note: Figure 3 assumes this alignment.
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NSE-8G™ Standard Product Data Sheet
Figure 4 Any-Service-Any-Port DS0-Granularity PHY Card
Preliminary
4 X
TEMUX-84
4 X
TEMUX-84
4 X
TEMUX-84
4 X
TEMUX-84
SPECTRA-
2488
TBS
TBS
TBS
TBS
TBS
SONET/T1/E1 Termination - VT/TU/DS0 Switching
SBS
SBS
NSE8G
SBS
SBS
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5 Block Diagram
The NSE-8G is organized as a DS0 granularity space switch. Alternatively, the NSE-8G is organized as a self aligning (with respect to STS-12 boundaries in TelecomBus mode) VT1.5/VT2 granularity space switch.
Figure 5 NSE- 8G Block Diagram Showing Functional Blocks
NSE-8G™ Standard Product Data Sheet
Preliminary
RP[0]
RN[0]
RP[1]
RN[1]
RP[11]
RN[11]
RC1FP
CMP
SYSCLK
LVDS
Receiver
(RXLV)
LVDS
Receiver
(RXLV)
LVDS
Receiver
(RXLV)
Data
Recovery
Unit
(DRU)
Data
Recovery
Unit
(DRU)
Data
Recovery
Unit
(DRU)
Receive
8B/10B
Decoder
(R8TD)
Receive
8B/10B
Decoder
(R8TD)
Receive
8B/10B
Decoder
(R8TD)
1/2
In-Band
Link
Controller
(ILC)
1/2
In-Band
Link
Controller
(ILC)
1/2
In-Band
Link
Controller
(ILC)
DS0 Crossbar Switch
(DCB)
Microprocessor Interface
1/2
In-Band
Link
Controller
(ILC)
1/2
In-Band
Link
Controller
(ILC)
1/2
In-Band
Link
Controller
(ILC)
Transmit
8B/10B
Encoder
(T8TE)
Transmit
8B/10B
Encoder
(T8TE)
Transmit
8B/10B
Encoder
(T8TE)
JTAG
Transmit Serializer
(PISO)
Transmit Serializer
(PISO)
Transmit Serializer
(PISO)
Clock
Synthesis
Unit
LVDS
Transmitt
er
(TXLV)
LVDS
Transmitt
er
(TXLV)
LVDS
Transmitt
er
(TXLV)
Tx
Ref
TP[0]
TN[0]
TP[1]
TN[1]
TP[11]
TN[11]
CSB
RSTB
A[11:0]
D[31:0]
ALE
RDB
WRB
INTB
TRSTB
TDI
TCK
TMS
TDO
The R8TD, in combination with the RXLV and DRU receive, decode and align incoming SBI336/STS-12-equivalent LVDS links. Outputs are provided to the primary switching flow and to the in-band signaling channel. These provide all analog and digital functions to terminate a full-duplex 777.6 MHz serial SBI336S or 777.6 MHz serial TelecomBus on LVDS.
A 12 X 12 DS0 Crossbar Switch(DCB) stage switches data and control signals between the 12 ports. The switching instructions are stored in two pages of ram configured as offline and online allowing the user to modify the offline page.
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NSE-8G™ Standard Product Data Sheet
Preliminary
The T8TE, in combination with the PISO and TXLV perform 8B/10B coding and emits the LVDS bit streams. These provide all analog and digital functions to launch a full-duplex 777.6 MHz serial SBI336S bus or 777.6 MHz serial TelecomBus on LVDS.
The microprocessor bus interface and in-band signaling units (ILC) provide a clean (error checked) channel between the NSE-8G and SBSs. This can be used to send messages between the NSE-8G microprocessor-and the SBS microprocessors in a user defined format.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 18 Document ID: PMC-2010850, Issue 1
6 Description
The PM8621 NSE-8G is a monolithic CMOS integrated circuit packaged in a 480 ball UBGA that performs DS0 and above granularity space switching on 12 SBI336 streams carried as serial SBI336S in 8B/10B coding over LVDS at 777.6 Mbit/s. The NSE-8G also performs VT1.5/VT2 and above granularity switching on 12 STS-12/STM-4 SONET/SDH streams, carried as Serial TelecomBus signals in 8B/10B coding over LVDS at 777.6 Mbit/s.
The NSE-8G is typically used with up to 12 PM8610 SBS or PM8611 SBS-lite devices to provide Memory-Space-Memory switching systems. As each SBS supports either four SBI buses at 19.44 MHz or one SBI336 bus at 77.76 MHz, the overall system supports any mixture of SBI and SBI336 byte serial buses, ranging from 48 19.44 MHz SBI buses to 12 SBI336 77.76 MHz buses that do not exceed an aggregate bandwidth of STS-144, or about 7.5 Gbit/s. In TelecomBus mode, the SBS devices support the same range of flexibility for 48 19.44 MHz and 12 77.76 MHz TelecomBuses at VT1.5/VT2 granularity
Central to the NSE-8G is a 12 x 12 cross bar switch. Every clock cycle, the cross bar switches a byte of data with control signals from each input port to an output port. The byte of data may be a DS0 channel from a T1/E1 or may be one byte of a column comprising a T1, E1, DS3, E3, VT1.5, VT2 or STS-1.
NSE-8G™ Standard Product Data Sheet
Preliminary
In order for switching to take place, all input and output streams must be synchronized. This is done via the RC1FP input signal. When switching T1s, E1s, VTs and other higher order units, only SBI336 multiframe alignment is required. The same applies for TelecomBus mode where only frame alignment is required.
An in-band control link over the serial LVDS interface allows the NSE-8G to communicate with the microprocessors attached to the SBS, SBS-lite or other serial SBI336S devices. The effective bandwidth of each inband link to each device is 8 Mbit/s. The inband link provides error detection on 32 byte user messages and some near realtime control signals between devices. Using the near realtime control signals the NSE-8G is able to synchronize page switching, indicate switchover between working or protected links and exchange three user defined signals (software) and eight Auxilliary signals (software). The User and Auxilliary signals can be used to indicates things like interrupts or can be used for handshaking between the end point microprocessors. The message format is left to the user of the devices. The only constraint is that each message is a maximum of 32 bytes long.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 19 Document ID: PMC-2010850, Issue 1
NSE-8G™ Standard Product Data Sheet
Preliminary
7 Pin Diagram
The NSE-8G is packaged in a 35 mm x 35 mm 480 ball UBGA.
Figure 6 NSE-8G UBGA-480 Ball Diagram (Bottom-View)
Upper Left
34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18
A VSS VSS VSS VSS VDDO VSS NC VSS NC VSS
Reserved
VSS
Reserved
VSS
Reserved
VSS VDDI
B VSS AVDH VDDO VDDO VDDO VDDI NC NC NC VDDI
C VSS AVDH AVDH VDDO VDDI
D VSS AVDH AVDH AVDH VDDO
E RESK1 RES1 NC NC
F VSS NC NC AVDL1
GNCNCNCNC
H VSS NC NC AVDH
JNCNCNCNC
K VSS NC NC VDDI
LNCNCNCNC
M VSS NC NC AVDH
N VDDI AVDL2 NC NC
P VSS NC NC VDDI
Reserved
NC NC VDDI NC
Reserved
VDDI VDDO NC NC
Reserved Reserved Reserved Reserved Reserved Reserved
Reserved
Reserved
Reserved Reserved Reserved Reserved
VDDI
Reserved Reserved Reserved
VDDO
VDDO VDDI
RSTB
VDDI
RNCNCNCNC
T NC NC AVDL4 AVDL3
U NC NC AVDL5 CSU_AV
DH
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 20 Document ID: PMC-2010850, Issue 1
NSE-8G™ Standard Product Data Sheet
Preliminary
Upper Right
17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
NC SYSCLK NC VSS NC VSS NC VSS
Reserved
VSS
Reserved
VSS NC VSS VSS VSS VSS A
NC NC NC TCK TMS NC VDDI
Reserved
NC VDDI NC VDDI T DI TDO NC
NC RC1FP VDDI TRSTB VDDI VDDO VDDI CMP
Reserved Reserved Reserved Reserved Reserved
Reserved Reserved Reserved Reserved
Reserved
VDDO
Reserved Reserved
NC VDDO VDDO VDDO VSS B
VDDI VDDO VDDO AVDH VSS C
NC VDDO AVDH AVDH VSS D
AVDH ATB0[1] AVDH AVDH E
ATB1[1] TN[1] TP[1] VSS F
TN[3] TP[3] TN[2] TP[2] G
AVDH VDDI NC VSS H
RP[1] RN[1] TN[4] TP[4] J
VDDI RP[2] RN[2] VSS K
VDDI AVDL14 RP[3] RN[3] L
AVDH RP[4] RN[4] VSS M
TN[6] TP[6] TN[5] TP[5] N
VDDI TN[7] TP[7] VSS P
RP[5] RN[5] TN[8] TP[8] R
AVDH VDDI AVDL13 VSS T
RP[7] RN[7] RP[6] RN[6] U
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 21 Document ID: PMC-2010850, Issue 1
Lower Left
VNCNCNCNC
W VSS AVDL6 VDDI AVDH
YNCNCNCNC
AA VSS NC NC VDDI
AB NC NC NC NC
AC VSS NC NC AVDH
AD NC NC AVDL7 VDDI
AE VSS NC NC VDDI
AF NC NC NC NC
AG VSS NC VDDI AVDH
NSE-8G™ Standard Product Data Sheet
Preliminary
AH NC NC NC NC
AJ VSS NC NC ATB1[2]
AK AVDH AVDH ATB0[2] AVDH
AL VSS AVDH AVDH VDDO ALE NC VDDI VDDO A[6] A[2] VDDI VDDO D[27] VDDI NC NC VDDI
AM VSS AVDH VDDO VDDO CSB RDB VDDI A[9] A[5] A[3] D[31] D[29] VDDI D[25] VDDI D[21] D[20]
AN VSS VDDO VDDO VDDO INTB WRB NC A[10] A[7] A[4] A[0] D[30] D[28] D[26] NC D[22] D[19]
AP VSS VSS VSS VSS NC VSS A[11] VSS A[8] VSS A[1] VSS NC VSS D[24] D[23] D[18]
34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18
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Lower Right
NSE-8G™ Standard Product Data Sheet
Preliminary
CSU_AVDHAVDL12 RP[8] RN[8] V
AVDL10 AVDL11 TN[9] T P[9] W
TN[10] TP[10] TN[11] TP[11] Y
VDDI TN[12] TP[12] VSS AA
RP[9] RN[9] AVDL9 VDDI AB
AVDH RP[10] RN[10] VSS AC
RP[11] RN[11] RP[12] RN[12] AD
VDDI NC NC VSS AE
NC NC NC NC AF
AVDH NC NC VSS AG
NC NC NC NC AH
AVDL8 NC NC VSS AJ
NC NC RES2 RESK2 AK
D[17] VDDO D[13] D[11] D[8] VDDO D[5] D[3] D[0] VDDO NC NC VDDO AVDH AVDH AVDH VSS AL
VDDI D[15] VDDI D[10] D[9] D[7] NC D[2] D[1] NC NC NC NC VDDO AVDH AVDH VSS AM
D[16] D[14] D[12] NC VDDI D[6] D[4] VDDI NC NC NC NC VDDO VDDO VDDO AVDH VSS AN
NC VSS VDDI VSS VDDI VSS NC VSS NC VSS NC VSS VDDO VSS VSS VSS VSS AP
17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 23 Document ID: PMC-2010850, Issue 1
8 Pin Description

8.1 Pin Description Table

Pad Name Type Pin No. Function
LVDS Ports (128 Balls)
RP[1]
RN[1]
RP[2]
RN[2]
RP[3]
RN[3]
RP[4]
RN[4]
RP[5]
RN[5]
RP[6]
RN[6]
RP[7]
RN[7]
RP[8]
RN[8]
RP[9]
RN[9]
RP[10]
RN[10]
RP[11]
RN[11]
RP[12]
RN[12]
Analog LVDS Input
J4
J3
K3
K2
L2
L1
M3
M2
R4
R3
U2
U1
U4
U3
V2
V1
AB4
AB3
AC3
AC2
AD4
AD3
AD2
AD1
NSE-8G™ Standard Product Data Sheet
Preliminary
Receive Serial Data. The differential receive serial data
links (RP[11:0]/RN[11:0]) carry the receive SBI336S or SONET/SDH STS-12 frame data from upstream sources in bit serial format. Each differential pair RP[X]/RN[X] carries a constituent SBI336 or STS-12 stream. Data on RP[X]/RN[X] 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. All RP[X]/RN[X] differential pairs must be frequency locked and phase aligned (within a certain tolerance) to each other. RP[11:0]/RN[11:0] are nominally 777.6 Mbit/s data streams.
Any unused or N/C, but available inputs should be tied low using a 10 k resistor.
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Pad Name Type Pin No. Function
TP[1]
TN[1]
TP[2]
TN[2]
TP[3]
TN[3]
TP[4]
TN[4]
TP[5]
TN[5]
TP[6]
TN[6]
TP[7]
TN[7]
TP[8]
TN[8]
TP[9]
TN[9]
TP[10]
TN[10]
TP[11]
TN[11]
TP[12]
TN[12]
NSE-8G Control and Clocking (5 Balls)
SYSCLK Input A16
Analog LVDS Output
F2
F3
G1
G2
G3
G4
J1
J2
N1
N2
N3
N4
P2
P3
R1
R2
W1
W2
Y3
Y4
Y1
Y2
AA2
AA3
Transmit Serial Data. The differential transmit working serial data links (TP[11:0]/TN[11:0]) carry the transmit SBI336S or SONET/SDH STS-12 frame data to a downstream sinks in bit serial format. Each differential pair carries a constituent STS-12 stream. Data on TP[X]/TN[X] 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. All TP[X]/TN[X] differential pairs are frequency locked and phase aligned (within a certain tolerance) to each other. TP[11:0]/TN[11:0] are nominally 777.6 Mbit/s data streams.
System Clock. The system clock signal (SYSCLK) is the master clock for the NSE-8G device. SYSCLK must be a
77.76 MHz clock, with a nominal 50% duty cycle.
CMP and RC1FP are sampled on the rising edge of SYSCLK.
NSE-8G™ Standard Product Data Sheet
Preliminary
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NSE-8G™ Standard Product Data Sheet
Pad Name Type Pin No. Function
RC1FP Input D16
Reserved Output C17 Reserved pin, must be left floating
CMP Input D10
Receive Serial Interface Frame Pulse. The receive serial interface frame pulse signal (RC1FP) provides system timing for the receive serial interface. RC1FP is supplied in common to all devices in a system containing one or more NSE-20G devices. In TelecomBus mode, RC1FP is set high once every four frames, in SBI mode without any DS0 switching, or when switching DS0s (WITHOUT CAS) RC1FP is also set high once every four frames, or multiple thereof. When in SBI mode switching DS0s WITH CAS RC1FP indicates signaling multiframe alignment by pulsing once every 48 frames or multiples thereof.
A software configurable delay from RC1FP is used to indicate that the C1 multiframe boundary 8B/10B characters have been delivered on all the receive serial data links (RP[32:1]/RN[32:1]) and are ready for processing by the time-space-time switching elements.
RC1FP is sampled on the rising edge of SYSCLK.
Connection Memory Page. The connection memory page select signal (CMP) controls the selection of the connection memory page in the NSE. When CMP is set high, connection memory page 1 is selected. When CMP is set low, connection memory page 0 is selected. Changes to the connection memory page selection are synchronized to the boundary of the next C1FP frame or multiframe depending on the mode:
4-Frame SBI/SBI336 mode:
CMP is sampled at the C1 byte position of the incoming bus on the first frame of the four-frame multiframe. Changes to the connection memory page selection are synchronized to the frame boundary (A1 byte position) of the next four-frame multiframe.
48-Frame SBI/SBI336 mode:
CMP is sampled at the C1 byte position of the incoming bus on the first frame of the 48-frame multiframe. Changes to the connection memory page selection are synchronized to the frame boundary (A1 byte position) of the next 48-frame multiframe.
TelecomBus mode:
CMP is sampled at the C1 byte position of every frame on the incoming bus. Changes to the connection memory pate selection are synchronized to the frame boundary (A1 byte position) of the next frame.
Preliminary
CMP is sampled on the rising edge of SYSCLK at the RC1FP frame position.
RSTB Input B18
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Reset Enable Bar. The active low reset signal (RSTB) provides an asynchronous reset for the NSE. RSTB is a Schmitt triggered input with an integral pull-up resistor
Pad Name Type Pin No. Function
Microprocessor Interface (49 Balls)
CSB Input AM30
RDB Input AM29
WRB Input AN29
Chip Select Bar. The active low chip select signal (CSB) controls microprocessor access to registers in the NSE­8G device. CSB is set low during NSE-8G Microprocessor Interface Port register accesses. CSB is set high to disable microprocessor accesses.
If CSB is not required (i.e. register accesses controlled using RDB and WRB signals only), CSB should be connected to an inverted version of the RSTB input.
Read Enable Bar. The active low read enable bar signal (RDB) controls microprocessor read accesses to registers in the NSE-8G device. RDB is set low and CSB is also set low during NSE-8G Microprocessor Interface Port register read accesses. The NSE-8G drives the D[31:0] bus with the contents of the addressed register while RDB and CSB are low.
Write Enable Bar. The active low write enable bar signal (WRB) controls microprocessor write accesses to registers in the NSE-8G device. WRB is set low and CSB is also set low during NSE-8G Microprocessor Interface Port register write accesses. The contents of D[31:0] are clocked into the addressed register on the rising edge of WRB while CSB is low.
NSE-8G™ Standard Product Data Sheet
Preliminary
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 27 Document ID: PMC-2010850, Issue 1
Pad Name Type Pin No. Function
D[31] D[30] D[29]
D[28]
D[27]
D[26]
D[25] D[24]
D[23] D[22]
D[21]
D[20]
D[19] D[18]
D[17] D[16]
D[15] D[14]
D[13] D[12]
D[11] D[10] D[9]
D[8]
D[7]
D[6]
D[5] D[4]
D[3] D[2]
D[1] D[0]
A[11 A[10]
A[9]
A[8]
A[7]
A[6]
A[5]
A[4]
A[3]
A[2]
A[1]
A{0]
I/O
Input AP28
AM24 AN23 AM23
AN22
AL22
AN21
AM21 AP20
AP19 AN19
AM19
AM18
AN18 AP18
AL17 AN17
AM16 AN16
AL15 AN15
AL14 AM14 AM13
AL13
AM12
AN12
AL11 AN11
AL10 AM10
AM9 AL9
AN27
AM27
AP26
AN26
AL26
AM26
AN25
AM25
AL25
AP24
AN24
Microprocessor Data Bus. The bi-directional data bus, D[31:0] is used during NSE-8G Microprocessor Interface Port register reads and write accesses. D[31] is the most significant bit of the data words and D[0] is the least significant bit.
Microprocessor Address Bus. The microprocessor address bus (A[11:0]) selects specific Microprocessor Interface Port registers during NSE-8G register accesses.
NSE-8G™ Standard Product Data Sheet
Preliminary
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 28 Document ID: PMC-2010850, Issue 1
Pad Name Type Pin No. Function
ALE Input AL30
INTB Open Drain
Output
JTAG Port (5 Balls)
TCK Input B14
TMS Input B13
TDI Input C12
TDO Tri-state C11
TRSTB Input D14
AN30
Address Latch Enable. The address latch enable signal (ALE) is active high and latches the address bus (A[11:0]) when it is set low. The internal address latches are transparent when ALE is set high. ALE allows the NSE-8G to interface to a multiplexed address/data bus. ALE has an integral pull up resistor.
Interrupt Request Bar. The active low interrupt enable signal (INTB) output goes low when an NSE-8G interrupt source is active and that source is unmasked. INTB returns high when the interrupt is acknowledged via an appropriate register access. INTB is an open drain output.
Test Clock. The JTAG test clock signal (TCK) provides timing for test operations that are carried out using the IEEE P1149.1 test access port.
Test Mode Select. The JTAG test mode select signal (TMS) controls the test operations that are carried out using the IEEE P1149.1 test access port. TMS is sampled on the rising edge of TCK. TMS has an integral pull-up resistor.
Test Data Input. The JTAG test data input signal (TDI) carries test data into the NSE-8G via the IEEE P1149.1 test access port. TDI is sampled on the rising edge of TCK. TDI has an integral pull-up resistor.
Test Data Output. TheJTAG test data output signal (TDO) carries test data out of the NSE-8G via the IEEE P1149.1 test access port. TDO is updated on the falling edge of TCK. TDO is a tri-state output which is inactive except when scanning of data is in progress.
Test Reset Bar. The active low JTAG test reset signal (TRSTB) provides an asynchronous NSE-8G test access port reset via the IEEE P1149.1 test access port. TRSTB is a Schmitt triggered input with an integral pull-up resistor.
Note that when TRSTB is not being used, it must be connected to the RSTB input.
NSE-8G™ Standard Product Data Sheet
Preliminary
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use 29 Document ID: PMC-2010850, Issue 1
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