Toshiba T1960CS, Maintenance Manual

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1-6
T1960CS/T1960CT
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The Clock Generator receives 14.31818 MHz (X2) and generates the following
frequencies:
• 25 MHz for the CPU (CPU operates at 50MHz.)
• 14.7456 MHz for the COM
• 24 MHz for the FDC and VFO
• 16 MHz is used for GA
• 14.31818 MHz is used for T9901 (SI)
❑
Gate Array
System Controller Gate Array
This gate array has the following functions:
• CPU Controller
• Memory Controller
- DRAM Controller
- Compatible Bus Interface Controller
• SMI 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
• I/O Register
- Compatible I/O Port
- Saving the data of the Register (in Resume Mode) Controller
- Toshiba Special Register
• 50 MHz/25 MHz Controller
• Data Bus Change Controller
• Data Latch
PCMCIA Controller Gate Array
This gate array has the following functions:
• Memory Card Controller
- PCMCIA IC Card Controller
- Toshiba Modem Card Controller