PC AD1200 Reference
Bit 5 A/D Busy, Read Only. 54
Bit 4 Clear A/D Error, Write Only. 54
Bit 3 DMA Enable, Read / Write. AD1200 Only 54
Bit 2 Interrupt Enable, Read / Write. 55
Bits 0 & 1. Mode Bit 0 & 1. Read / Write. 56
Initialising The A/D Converter. 57
The A/D Gain Channel Register. 58
Bits 6 & 7. Gain select. Read / Write. 58
Bits 4 & 5. Reserved For Future Expansion. R/W. 59
Bits 0, 1, 2 & 3. Channel Select. Read / Write. 59
The A/D Converter Input Registers. Read Only 60
The DAC0 D/A Converter Output Registers. 62
The DAC1 D/A Converter Output Registers. 63
The Digital Output Port Register. Write Only 65
The Digital Input Port Register. Read Only 66
The Timer & Extended Mode Register. Read/ Write 66
Bits 0-5, TIMER Pacer Clock Divisor Bits. R/W. 67
Bits 6 & 7 XMODE, Extended Mode Read/Write. 69
The 8254 Counter Timer Registers. Read/ Write 70
Chapter 3 List Of Figures._______________________
Figure 3-1. AD1200 Register Map. 51
Figure 3-2. A/D Control Status Register. 53
Figure 3-3. Mode 0 & 1 Bits. 56
Figure 3-4. AD1200 Extended Mode Bits. 57
Figure 3-5. AD1210-21 Extended Mode Bit. 57
Figure 3-6. A/D Gain Channel Register. 58
Figure 3-7. Gain Selection. 59
Figure 3-8. Channel Selection. 60
Figure 3-9. ADC Low Byte Input Register. 61
Figure 3-10. ADC High Byte Input Register. 62
Figure 3-11. DAC0 Low Byte Output Register. 63
Figure 3-12. DAC0 High Byte Output Register. 63
Figure 3-13. DAC1 Low Byte Output Register. 65
Intro-9
