User Guide

PAMS
System Module DB6
NHB–3
Technical Documentation
Original 26/97
Page 4–18
Signal name Signal description From
TBAT Battery temperature detection and system con.
vibrabattery control
BTYPE Battery size identification system con.
JCONN Junction box connection identification AUDIO
ROMAD18 Rom address 18, (paging) ASIC
External Signals and Connections, Outputs
Signal name Signal description To
XPWROFF Power off control, PSL+ watchdog reset PWRU
PWM Charger on/off control PWRU
WSTROBEX MCU write strobe ASIC
RSTROBEX MCU read strobe ASIC
MCUAD(19:0) 20–bit MCU address bus ASIC
MBUSDET MBUS activity detection ASIC
PCMCLK Clock for audio codec control data AUDIO
transfer
PCMCDI Audio codec control data transmitting AUDIO
XSELPCMC Chip select for audio codec AUDIO
PHFS_TXD2 Power on/off control for HF device. system con.
Verification output of the programmed data
of FLASH during programming.
CALL_LED ’Incoming’ call indicator light control UIF conn.
BACKLIGHT LCD and display backlight on/off control UIF conn.
BUZZER Buzzer signal UIF conn.
VOLTUM Software charging voltage limit PWRU
BATDET Detect battery removing and give to ASIC ASIC
warning, ASIC drive UIM card down
External Signals and Connections, Bidirectional
Signal name Signal description To/From
MCUDA(7:0) MCU‘s 8–bit data bus ASIC
M2BUS Asynchronous serial data bus system conn.