PCBs
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 |