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Nokia Hardware & Hardware Repair all what you need for Hardware Repairing for Nokia Phones. Before writing any thread here try to check the Frequently Asked Questions Section. |
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09-07-2005, 12:08 | #1 (permalink) |
Junior Member Join Date: Sep 2005
Posts: 2
Member: 178243 Status: Offline Thanks Meter: 0 | Premicell 18i 20 way connector & RS-232 To this end, does anyone have details of either the cable or the 20-way connector? From elsewhere on this site I have been able to determine that, counting from the left, pin 6 on the upper bank is MBUS, and on the lower, ground, but this is about all that I can find. Any further light that could be shed on this topic would be greatly appreciated! Cheers, Dave. |
09-08-2005, 10:45 | #2 (permalink) |
Junior Member Join Date: Sep 2005
Posts: 2
Member: 178243 Status: Offline Thanks Meter: 0 | Of course. I managed to find more information almost as soon as I posted the message, so to answer my own question before I ask another, in the hope that others might find it useful. TOP 01 oooooooooo 10 20 oooooooooo 11 1 RS_RX Serial RX (Receive data for serial communication) • ”0”; min/max 0...0.6 V2 RS_TX Serial TX (Transmit data for serial communication) • ”0”; min/max 0...0.6 V3 SCK_RTS Serial Clock (Serial Clock for synchronous communication / RS_RTS) • ”0”; min/max 0...0.6 V4 WDDIS • ”0”; min/max 0...0.6 V Watchdog disable, Flash mode • ”1”; min/max 2.4...7.15 V, Normal mode5 PCMDCLK Audio Clock (512 kHz) clock for audio data • ”0”; min/max 0...0.6 V6 MBUS Serial control bus (General Purpose Control and Test Control Bus) • ”0”; min/max 0...0.5 V7 VPP Programming Voltage (Programming voltage is applied before entering the programming state) • active; min/max 11.6...12.6 V8 DBUS_RXD DBUS Interface (Receive data for DAI) • ”0”; min/max 0...0.6 V9 DBUS_TXD DBUS Interface (Transmit data for DAI) • ”0”; min/max 0...0.6 V10 PCMSCLK Audio Clock (8 kHz slot clock for audio data) • ”0”; min/max 0...0.6 V11 VL Logic Supply Voltage (3 V Logic voltage) • typical; 3.2 V12 FBUS_TX FBUS TX (FBUS transmit) • ”0”; min/max 0...0.5 V13 FBUS_RX FBUS RX • FBUS receive ”0”; min/max 0...0.6 V14 VBATT Battery supply voltage • min/max 6.45...7.15 V15 DGND Digital ground 16 RS_CTS RS232 (Handshake signal for RS–232 serial interface) 17 HOOK_DTR Accessory detection • active; min/max 0...0.5 V18 AGND Analog ground 19 XMIC_ID External Microphone Input (Audio in e.g. service handset) • typical 200 mV20 XEAR_DSR External Speaker (Audio out e.g. service handset) Which about covers it, except, what to use for the level conversion from RS232? Is it possible to modify a commercially available lead for another Nokia phone to provide this. I wish to use the AT command interface, a la AFW-3 rather than the binary interface in the manner of NDS/AFW-1. |
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