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Nortel Networks MSC8101 ADS Off-Board Application Maximum Current Consumption, 711 5V Bus

Models: MSC8101 ADS

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Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

Power

cation Maximum Current Consumption" below:

TABLE 7-1. Off-Board Application Maximum Current Consumption

Power Bus	Max. Current


5V0	2A

3V3	1.5A

To protect on-board devices against supply spikes, decoupling capacitors (typically 0.1∝F) are provided between the devices’ power leads and GND, located as close as possible to the power leads, while 47 ∝F bulk capacitors are spread around.

7•1•1

5V Bus

Some of the ADS peripherals reside on the 5V bus. Since the MSC8101 is not 5V tolerant, buffer- ing is provided between 5V peripherals and the MSC8101, protecting the MSC8101 from the higher voltage level. The 5V bus is connected to an external power connector via a fuse (4A).

To protect against reverse-voltage or over-voltage being applied to the 5V inputs a set of high- current diodes and zener diode is connected between the 5V bus GND. When either over or reverse voltage is applied to the ADS, the protection logic blows the fuse, while limiting the mo- mentary effects on board.

7•1•2

3.3V Bus

The MSC8101, the SDRAMs, the address and data buffers are powered by the 3.3 bus, which is produced from the 5V bus using a low-voltage drop, linear voltage regulator LM1085S, the which is capable of driving upto 4A, facilitating operation of external logic as well.

7•1•3

1.5V Bus

The MSC8101’s internal logic and the PLL are powered with a lower-voltage power source, voltage of which may be in a range of 0.9V - 2.2V. Obviously, there is the power-speed trade-off, i.e., lower operation speeds may be obtained with lower voltage supply.

To provide means of evaluating this trade-off, a variable, linear power regulator - MIC29372 with OpAmp MC33202 in feedback, is provided, so that the voltage level of that bus, may be easily tuned, to evaluate influence.

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MSC8101ADS RevB User’s Manual

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Nortel Networks MSC8101 ADS Off-Board Application Maximum Current Consumption, 711 5V Bus, 712 3V Bus, 713 5V Bus

Contents

MSC8101 ADS MSC8101ADS RevB User’s Manual Contents ATM on LD14 BOM Freescale Semiconductor, Inc List of Figures Viii List of Tables Freescale Semiconductor, Inc Introduction Abbreviations’ ListRelated Documentation Specification MSC8101ADS SpecificationsCharacteristics Specifications ADS Features Freescale Semiconductor, Inc Semiconductor, Inc Hardware Preparation MSC8101ADS Top Side Part Location diagram Setting The Core Supply Voltage Level Setting MODCK13 For Initial PLLs’ Multiplication Factor SW9Setting HReset Configuration Source OnCE Connection Scheme Host I/F OperationStand Alone Operation Host System Debug Scheme B34 +5V Power Supply Connection JTAG/OnCE Connector P6Host I/F Connector P4 P6 JTAG/OnCE Port ConnectorP4 Host I/F Connector Terminal to MSC8101ADS RS-232 ConnectionFlash Memory Simm Installation 38 10/100-Base-T Ethernet Port ConnectionFlash Memory Simm Insertion Host I/F Setting SW1 Emulator Enable EE SW2Abort Switch SW3 Soft Reset Sreset Switch SW4Data Bus Width Setting SW5 & SW6 Hard Reset Hreset Switch SW7 Power-On Reset Switch Preset SW8Configuration Switch SW9 Modck Available Clock Mode SettingBoot Mode Select SW10 CPMJumpers Software Options Switch SW11431 JP1 DLL Disable 432 JP2 Clock Buffer Set437 JP9 5V power supply for Codec 433 JP3 50 Ohm Enable436 JP6,JP7 MIC Enable 434 JP4 VPP Source SelectorLEDs ATM RX Indicator LD6 Ethernet Link Indicator LD4Fast Ethernet Clsn Indicator LD5 ATM TX Indicator LD7MSC8101’s Registers’ Programming SIU Registers’ Programming System InitializationMemory Controller Registers Programming Memory Controller Initialization for 10050a MHz Memory Controller Initialization for 10050a MHz Mbmr Power On Reset Configuration Reset & Reset ConfigurationPower- On Reset Manual Hard ResetSummary Reset Configuration Schemes Hard Reset Configuration WordManual Soft Reset IRQ2Local Interrupter Clock GeneratorBus Buffering Chip Select GeneratorSynchronous Dram Bank MSC8101ADS Chip Select Assignments Bus Timing MachineMHz Sdram Mode Register Programming Sdram ProgrammingSdram Cycle Type \ Flash Delay nsec Flash Memory SimmSdram Refresh Flash Simm Connection Scheme Flash Programming VoltageCommunication Ports Ports Function Enable MSC8101 I/O Ports/Name581 ATM Port 582 100/10 Base T PortCS4221 Programming Audio Codec5831 CS4221 Programming CS4221 Programming 584 T1/E1 Ports585 RS232 Ports Host I/F Host I/F Interconnect signals DMA off-board toolBoard Control & Status Register Bcsr BIT Mnemonic BCSR0 DescriptionBCSR0 Board Control / Status Register PON ATT DEF HostcspBCSR0 Description 10. BCSR1 DescriptionBCSR1 Board Control / Status Register Fethien 10. BCSR1 DescriptionPON ATT DEF Atmrst Fethrst11. Peripheral’s Availability Decoding 12. BCSR2 DescriptionBCSR2 Board Control / Status Register 14. Flash Presence Detect 41 Encoding 12. BCSR2 Description13. Flash Presence Detect 75 Encoding BCSR3 Board Status Register15. BCSR3 Description 18. ADS Revision Encoding 16. EXTOOLI03 Assignment17. External Tool Revision Encoding EngineeringPPC Bus Memory Map MSC8101ADS Memory Map FF000000 Ffffffff MSC8101ADS Memory MapFE000000 Ffffffff FF800000 FfffffffPower rails ADS Power Scheme712 3V Bus Off-Board Application Maximum Current Consumption711 5V Bus 713 5V BusAppendix a MSC8101 Bill of Material A1 BOM Table A-1. MSC8101ADS Bill Of MaterialFreescale Inc Inc Dale Freescale Semiconductor Freescale Semiconductor, Inc Appendix B Support Information Interconnect Signals B11Table B1-2. P1 System Expansion Interconnect Signals TSTAT1 GNDTSTAT0 TSTAT2 TSTAT3 TSTAT4 TSTAT5Clkx Damage to the PM5350 ATM UNIEXPD2 EXPD0EXPD1 EXPD3EXPCTL0 Table B1-3. P2 CPM Expansion Interconnect Signals B12 MSC8101ADS’s P2 CPM Expansion ConnectorSCC1RXD PD30 Hwrds SPICLKPD18SPIMOSIPD17 PD7Atmrfclk Atmtsoc PA29Atmrsoc PA27 Atmrca PA26ATMRXD5 PA15 ATMRXD7 PA17ATMRXD6 PA16 ATMRXD4 PA14Fethcol PB27 Fethtxen PB29Fethrxer PB28 Fethcrs PB26HD2 HD0HD1 HD3Atmfclk PC26 Fethmdc PC13PC6 Fethmdio PC12PC7 SMCTX1PC5Table B1-4. P3 ISP Connector Interconnect Signals B14 P4 Host Interface ConnectorB13 Hack HD1 HD2 HD3 HD4 HD5 HD6 HD7 HD8 HD9HA1 HA2 HA3 HCS1 HreqB16 Table B1-6. P6 JTAG/ONCE Connector Interconnect SignalsB15 P5, P7, P8, P9, P10, P13, P14 Logic Analyzer Connectors HDSB18 P15,P16 SMB Connectors Table B1-7. P12 Ethernet Port Interconnect SignalsB17 P12 Ethernet Port Connector B19 P17,P18 Double RJ45 T1/E1 Line ConnectorsB110 P19,P21,P24 Stereo Phone Jack Connectors B111 P20,P22,P23,P25 RCA Jack ConnectorsB112 P26 5V Power Supply Connectors Table B1-10. P27A Interconnect SignalsTable B1-11. P27B Interconnect Signals B113 P27A,B RS232 Ports’ ConnectorsFreescale Semiconductor, Inc Appendix C Program Information Freescale Semiconductor, Inc Logic Equations C11 First Include FileC12 Second Include file C13 Main File Constant SIZE1 Constant SHIFTLENGTH= Length of HRD/HRW Delay Shifter SIZE0Constant EE45HOLDVALUE ConstantSRESET~ Constant TCPCDEFAULT0 Constant TCPCDEFAULT1HDIMDEN~ Host SW Enable RSTCNF~ Output HRESET~ BidirHDIEN~ SBOOTENOUT~SPARE1 Output HRRQEN~WDTIMER3 WDTIMER1WDTIMER2 WDTIMER4BCSR1 SBOOTEN~ EepromenableResets Cleartowdctrl Scndcfgbyteread Thirdcfgbyteread FourthcfgbytereadBCSR1PONDEF0..SIZE1 BCSR3IRQ0 BCSR3PONDEF0..SIZE3Begin Defaults END DefaultsBCSR0 BCSR0PONCONST0..5 EEDPONDEFAULT,RSV37PONDEFAULT ElseEND if END Generate PSDVAL~ = Opndrnvcc EE PinsRegularpoweronreset = RPORI~ == Regularponresetactive END ifElse Hdiwr = If Hdds thenIf !HDSP then Hdiwr = END if ElseElsif MPCWRITEBCSR5 then Elsif MPCWRITEBCSR1 thenElsif MPCWRITEBCSR4 then Elsif MPCWRITEBCSR6 thenSIGNALLAMP1~ Elsif MPCREADBCSR1 then If MPCREADBCSR0 thenElsif MPCREADBCSR3 then Elsif Firstcfgbyteread then HRESET~ =SRESET~ = Elsif Scndcfgbyteread thenElse SIGLAMP1OUT~ Then SIGLAMP0OUT~ = GND ElseThen SIGLAMP1OUT~ END if If !T1234EN~ & FETHIEN~ then116 END if Drive Poreset Impulse Reconfig Using BCSR4 Watchdog for Auto ReconfigurationMODCK1-3 Driven 118