Table of Contents NT5U0125 - A0671115 01 (Telephony PCP) NT5U0130 - A0685005 REL 2 (Control PCP) Noritake CU20026SCPB-T23A (Display) Connector Pinout Code Unused (Keep for later) NT5U0125 - A0671115 01 (Telephony PCP) Part Chip Label Description Comment U1 W0048H SFH 615A-3 Transistor Output Optocoupler U2 W0048H SFH 615A-3 Transistor Output Optocoupler U3 W0048H SFH 615A-3 Transistor Output Optocoupler U4 W0048H SFH 615A-3 Transistor Output Optocoupler U5 f P0136SF MM74HC151N MC74HC151N 8-Channel Digital Multiplexer U6 W0048H SFH 615A-3 Transistor Output Optocoupler U7 W0048H SFH 615A-3 Transistor Output Optocoupler U8 W0048H SFH 615A-3 Transistor Output Optocoupler U9 A QMV155B X50 9851 U10 A QMV97AP5 X25A 9711 U12 Philips SA 5230N J74582A Jnr149F Low Voltage Operational Amplifier U13 Philips A4123542 AU7511 3 kS02163 PCD3349A A0772470 REV 1 MFG 02 06 14 8-bit microcontroller with DTMF generator Removable U14 f P0118SH MM74HC32N MC74HC32N Quad 2-Input OR-Gate U15 ST M74HC14B1 W991V0142 HEX Schmitt Inverter U16 f P0124SD MM74HC4051N MC74HC051N 8-Channel Analog Multiplexer U17 W0048H SFH 615A-3 Transistor Output Optocoupler U18 M LM2903N CKUF 0002 Low-power dual voltage comparator U20 W0048H SFH 615A-3 Transistor Output Optocoupler U21 ST M74HC14B1 W991V0142 HEX Schmitt Inverter U22 f P0118SD MM74HC08N MC74HC08N Quad 2-Input AND Gate U23 unpopulated Conn Whereto? J1A Keypad J2 to PCP J10B Handset J33 Unknown, not populated J34 to Data-Jack NT5U0130 - A0685005 REL 2 (Control PCP) Part Chip Label Description Comment U1 MAX690A ESA 117 Precision Supply-Voltage Monitor U2 ST M29F040B 90K6 5BS0X0216 A4123567 FW2.11 MP MC U2 Firmware removable U3 EPSON 24.5760 E M 2PH 2117G Crystal U4 1161A1 M5M5408BFP -70HI 4194304-BIT (524288-WORD BY 8-BIT) CMOS STATIC RAM Must be powered to keep its content - perhaps the configuration is stored here? U6 ZILog SL1960 Z8S18020VEC Z180 MPU 0152 37 A0685004 REV 22 MFG 02 06 28 Zilog Z180 CPU U8 TI 98CNTHK ABT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS U9 AMD MACH231SP -12YC -14YI 9934BPA B 55EA High-performance ee CMOS Programmable Logic U10 f P07SD 74ACT240 Octal Buffer/Line Driver with 3-STATE Outputs U11 ON ACT273 CPAM0146 Octal D Flip-Flop U12 ON ACT273 CPAM0146 Octal D Flip-Flop U13 ON ACT273 CPAM0146 Octal D Flip-Flop U14 f p22SB 74ACT241 Octal Buffer/Line Driver with 3-STATE Outputs U15 ON ACT273 CPAM0146 Octal D Flip-Flop U16 ST M27C801 120K6 F B580A9922 737874 VW2.0A U16 Voiceware/-prompts removable U17 ST 93C66 6 K033M 4096-Bit Serial CMOS EEPROM (MICROWIRE™ Synchronous Bus) Keeps information even without power - could be storage for CDRs? U18 TI 93DT5TK ALS03B Quadruple 2-Input Positive NAND-Buffers with Open-Collector Outputs U19 f P18SB 74ACT04 Hex Inverter U20 f P09SB 74ACT373 Octal Transparent Latch with 3-STATE Outputs U21 TI 97JDFHK ACT32 Quadruple 2-Input Positive-OR Gates U22 TI AD1Y5K LM2902 Low Power Quad Operational Amplifiers U23 TDK 73K324l-28IH 0C0201 2185403 CCITT V.22bis, V.22, V.21, V.23, Bell 212A Single-Chip Modem U24 M ACT08 XAE928 Quadrupe 2-Input Positive-AND Gates U26 ST M27C801 120K6 F B580A9922 737877 VW2.0A U26 Voiceware/-prompts removable U27 NEC D7759GC 9843PP003 ADPCM SPEECH SYNTHESIZER LSIs Used for Voiceware/-prompts U28 EPSON 7.1590 E M 2PH 2132G Crystal U29 75T204-IL TDK-PA0029 19886.02 5V Low-Power Subscriber DTMF Receiver U30 f P18SB 74ACT04 Hex Inverter U31 ON MC33163DW XAA0209 Power Switching Regulator U33 f P18SB 74ACT04 Hex Inverter U34 143 121AI Micropower Low Dropout Regulators with Shutdown U35 ON ACT273 \\CPAMO146 Octal D Flip-Flop U36 TI TL16C550CIFN 1CA842W Asynchronus Communications Element With Autoflow Control U37 unpopulated X1 ST M29F040B 90K6 5BS0X0216 A4123568 FW2.11 MP MC X1 Firmware removable Conn Whereto? J1 unknown J2 unknown J3 unpopulates J4 to Control PCP J5 Rear Terminal J6 Card Reader J7 Line Display J8 Coin Validator J12 unknown J13 unknown J14 unknown J15 unknown Noritake CU20026SCPB-T23A (Display) The Noritake CU20026SCPB-T23A is a 20 x 2 VFD Module - the display of the phone. As there is no official datasheet to the display, it seems like this display has been custom-made for Nortel. There is a datasheet for a similar display, outlining the characters that can be displayed: Connector Pinout Notch 1 D7 3 D6 5 D5 7 D4 9 D3 11 D2 13 D1 15 D0 17 X1 19 X2 21 X3 23 X4 25 X5 2 +5V 4 +5V 6 +5V 8 GND 10 GND 12 GND 14 GND 16 GND 18 GND 20 X6 22 GND 24 GND 26 GND Code There is a Arduino-Sketch for testing the display here. It is - as well as the pinout and the images of the display - provided by Jim Akesons. Because our test-device is missing its display, there is a arduino-based emulator, that returns the display-contents over a serial connection. You can find the code here. Unused (Keep for later) U25 U32 U38 U39 J9 J11 J16 J17 J18 J19 J20 J21 J22 J23 J24 J25 J26 J27 J28 J29 J30 J31 J32 J35 J36 J37 J38 J39 millennium/boards.txt Last modified: 2021/04/18 12:35(external edit)