Toshiba T1910 - Page 5

o Clock Generator receives 14.31818 MHz (X2) and generates the following frequen-
cies:
• 33 MHz for the CPU
• 14.7456 MHz for the COM
• 24 MHz for the FOC and VFO
• 16 MHz is used for GA
• 14.31818 MHz is used for T9901 (SI)
•
4.77MHz is used for KBC
o GateArray
System Controller Gate Array
This gate array has the following functions:
• CPU Controller
• Memory Controller
-
DRAM Controller
- Compatible Bus Interface Controller
• SM! Controller
• VL Bus Controller
• Bus Controller
- Compatible Bus Interface Controller
- Compatible Access Controller
-
DMAC Controller
- I/O Controller
• Address Latch Controller
- 32-Bit to 16-Bit Controller
- Address Latch
-
DMA Address Generator
-
Refresh Address Generator
• 110 Register
- Compatible
I/O Port
- Saving the data of the Register (in resume) Controller
- Toshiba
Special Register
• 33 MHzI16.5 MHz Controller
• Data Bus Change Controller
• DataLatch
PCMCIA Controller Gate Array
This gate array has the following functions:
• Memory Card Controller
-
PCMCIA Ie Card Controller
- Toshiba Modem
Card Controller
T1910 Series Maintenance Manual Addendum --------------
Add-5