Toshiba T2150 series - I;O Controller Gate Array (IOCNT-GA); PCMCIA Controller Gate Array; Level Shift Gate Array; Video Controller LSI (C&T 65545)

T2150 Series
1-7
❑ I/O Controller Gate Array (IOCNT-GA)
This gate array has the following functions:
Hotkey control
BIOS ROM interface
PS interface
NEXUS GA function
Internal communication control
KBC, main CPU communication register file
KBC interrupt control
KBC communication control
❑ PCMCIA Controller Gate Array
This gate array has the following functions:
PCMCIA memory card control
❑ Level Shift Gate Array
This gate array has the following functions:
Level shift 5V data bus <==> 3V data bus
❑ Video Controller LSI (C&T 65545)
The T2150 series internal display controller (3.3/5 volts operation)
controls the internal VGA display and external SVGA compatible
display.
❑ Keyboard Controller (KBC)
One M38802 chip is used.
This KBC includes the keyboard scan controller and keyboard inter-
face controller. The KBC controls the internal keyboard, external
keyboard port, and PS/2 mouse port.
❑ Real Time Clock (RTC)
One T9934 chip is used. The T9934 has 128 bytes of memory. Four-
teen bytes of memory are used for the calender and clock. The re-
maining 114 bytes are used for the system configuration data.