Zilog Z08470 - Manual (Page 15)

Z80 CPU Peripherals
User Manual
List of Tables UM008101-0601
xv
List of Tables
Counter/Timer Channels
Table 1. Channel Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Table 2. Channel Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Table 3. Interrupt Vector Register . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Table 4. Channel Select Truth Table . . . . . . . . . . . . . . . . . . . . . . . . .13
Table 5. Channel Control Register . . . . . . . . . . . . . . . . . . . . . . . . . .19
Table 6. Time Constant Register . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Table 7. Interrupt Vector Register . . . . . . . . . . . . . . . . . . . . . . . . . .23
Direct Memory Access
Table 8. Maximum Transfer and Search Speeds (Burst and Continuous
Modes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Table 9. Reduction in Z80 CPU Throughput per Kbaud
(Byte Mode Transfers) . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Table 10. Events and Actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Table 11. Contents of Counters After DMA Stops Because of End-of-
Block (Transfer Operations) . . . . . . . . . . . . . . . . . . . . . . . .76
Table 12. Contents of Counters After DMA Stops Due to Byte Match
(Search or Transfer/Search Operations) . . . . . . . . . . . . . . .76
Table 13. DMA Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Table 14. Reinitialize Status Byte . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Table 15. Control Byte Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
Table 16. Sample DMA Program . . . . . . . . . . . . . . . . . . . . . . . . . . .126
Table 17. Receive Event Sequence . . . . . . . . . . . . . . . . . . . . . . . . . .139
Table 18. Transmit Event Sequence . . . . . . . . . . . . . . . . . . . . . . . . .139