1.3.7 Programmable Timer/Counter
z
Type : 82C54 -8 programmable timer/counter
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Counters : Counter1 and counter2 are cascaded as a 32 bit pacer timer.
Counter0 is a user available timer/counter. The software driver also uses
counter0 to implement a machine independent timer.
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Clock input frequency : DC to 10 MHz
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Pacer output : 0.00047Hz to 0.5MHz
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Input ,gate : TTL compatible
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Internal Clock : 2
MHz
1.3.8 Direct Memory Access Channel (DMA)
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Level : CH1 or CH3, jumper selectable
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Enable : via DMA bit of control register
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Termination : by interrupt on T/C
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Transfer rate : 100K conversions/sec.
OME-A-822PGL/PGH Hardware Manual ----
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