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1-16 Service Guide
1.4.5 M7101 GPIO (General Purpose I/O) Port Definition
Table 1-11 M7101 GPIO Port Definition
Item Description
GPIOA2 Smart inverter contrast counter control
GPIOA3 0: Normal operation of system
1: Shutdown system
GPIOA4 Serial data on X24C02
GPIOA5 Battery gauge communication control
GPIOA6 Battery data line
GPIOA7 Thermal sensor data line
GPIOC6 VGA thermal sensor data line
GPIOC7 0: VGA chip standby mode
1: Normal operation
Register E0h bit 8 Serial clock on X24C02
Register E0h bit 9 0: Disable 12V for flash ROM
1: Enable 12V for flash ROM
Register E0h bit 10 0: 3 mode FDD
1: Normal
Register E0h bit 11 Thermal sensor clock line
Register E0h bit 12 Thermal sensor reset
Register E0h bit 13 0: Enable battery LED
1: Disable battery LED
Register E0h bit 14 0: Disable audio amplifier
1: Enable audio amplifier
Register E1h bit 0 0: NiMH battery
1: Li-ion battery
Register E1h bit 1 CPU thermal high
1.4.6 Processor
Table 1-12 Processor Specifications
Item Specification
CPU type P54CSLM-120,P54CSLM-133, P54CSLM-150, P55CLM-133,
P55CLM - 150
CPU package SPGA
Switchable processor speed (Y/N) Yes
Minimum working speed 0MHz while hibernation mode
CPU voltage 3.1V/2.9V/2.45V
1.4.7 BIOS
Table 1-13 BIOS Specifications