Nokia 9000i - Procu; Technical Specifications

After Sales
Technical Documentation
RAE/RAK–1N
PDA Hardware
Page 6 – 25
Original, 08/96
PROCU
The Processing unit contains integrated Intel E3G CPU (CPU and
peripherals on the same chip), two types of memory circuits (DRAM,
FLASH), a 22–bit address bus (26 bit internally), and a 16–bit data bus.
PROCU functions:
– GEOS, DOS, BIOS, TFFS and GEOS application platform
– user interface functions
– external interfaces (IrDA and RS232)
– power management
– self–test, production testing, and maintenance
Technical specifications
Table 16. External Signals and Connections, Inputs
Signal Name Signal description From
VSYS System voltage 3.3V PDAPWRU
VCC5 5V for FLASH and RBUS PDAPWRU
VB Battery voltage B2B / VB
VL1 CMT operating voltage B2B / VL1
PWRGOOD Reset signal for CPU PDAPWRU
VBACK Backup battery voltage to RTC PDAPWRU
RBUSTXD RBUS transmit of CMT B2B /
RBUSTXD
RSRXD Serial data to PDA module SIRU
TESTMODEX PDA test SW activation Test pad /
E113
JTAGTDI JTAG data in Test pad /
E100
JTAGTCK JTAG clock Test pad /
E101
JTAGTMS JTAG mode control Test pad /
E102
KEYS(1:0) Keymatrix sense lines EMIU
Table 17. External Signals and Connections, Outputs
Signal Name Signal description To
LIDOPEN
Lid status for CMT module
B2B / LIDO-
PEN
LCDVCCON LCD Vcc on/off PDAPWRU
LCDVEEON LCD Vee on/off PDAPWRU
LCDPWM PWM signal for LCD voltage control PDAPWRU