Rainbow-electronics ATmega64M1 Manuel d'utilisateur télécharger pdf (Page 152)

152

8209A–AVR–08/09

ATmega16M1/32M1/64M1

• Bit 6 – PISELn: PSC Module n Input Select

Clear this bit to select PSCINn as module n input.

Set this bit to select Comparator n output as module n input.

• Bit 5 – PELEVn: PSC Module n Input Level Selector

When this bit is clear, the low level of selected input generates the significative event for fault

function .

When this bit is set, the high level of selected input generates the significative event for fault

function.

• Bit 4 – PFLTEn: PSC Module n Input Filter Enable

Setting this bit (to one) activates the Input Noise Canceler. When the noise canceler is activated,

the input from the input pin is filtered. The filter function requires four successive equal valued

samples of the input pin for changing its output. The Input is therefore delayed by four oscillator

cycles when the noise canceler is enabled.

• Bit 3 – PAOCn: PSC Module n 0 Asynchronous Output Control

When this bit is clear, Fault input can act directly to PSC module n outputs A & B. See

Section “PSC Input Configuration”, page 143.

• Bit 2:0 – PRFMn2:0: PSC Module n Input Mode

These three bits define the mode of operation of the PSC inputs.

Table 18-12. Input Mode Operation

18.16.10 PSC Interrupt Mask Register – PIM

• Bit 7:4 – Res: Reserved

These bits are reserved and will always read as zero.

• Bit 3 – PEVE2: PSC External Event 2 Interrupt Enable

When this bit is set, an external event which can generates a a fault on module 2 generates also

an interrupt.

PRFMn2:0 Description

000b No action, PSC Input is ignored

001b Disactivate module n Outputs A

010b Disactivate module n Output B

011b Disactivate module n Output A & B

10x Disactivate all PSC Output

11xb Halt PSC and Wait for Software Action

Bit 76543210

- - - - PEVE2 PEVE1 PEVE0 PEOPE PIM

Read/Write R R R R R/W R/W R/W R/W

Initial Value 0 0 0 0 0 0 0 0

1 2 ... 147 148 149 150 151 152 153 154 155 156 157 ... 342 343

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Rainbow-electronics ATmega64M1 Manuel d'utilisateur Page 152