Motorola MCF5282, MCF5281 user manual Qadc Control Register 1 QACR1, CIE1 PIE1 SSE1

Models: MCF5282 MCF5281

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Register Descriptions

27.6.5.2QADC Control Register 1 (QACR1)

QACR1 is the mode control register for queue 1. This register governs queue operating mode and the use of completion and/or pause interrupts. Typically, these bits are written once when the QADC is initialized and are not changed thereafter.

Stop mode resets this register.

Field

Reset

R/W:

Field

Reset

R/W: Address

15

14

13

12

11

10

9

8

CIE1

PIE1

SSE1

MQ112

 

MQ111

MQ110

MQ19

MQ18

 

 

 

 

 

 

 

 

 

 

 

0000_0000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R/W

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

 

0

0000_0000

R

IPSBAR + 0x19_000c, 0x19_000d

Figure 27-9. QADC Control Register 1 (QACR1)

Table 27-6. QACR1 Field Descriptions

Bit(s)

Name

 

Description

 

 

 

15

CIE1

Queue 1 completion interrupt enable. Enables an interrupt request upon completion of queue 1.

 

 

The interrupt request is initiated when the conversion is complete for the last CCW in queue 1.

 

 

1

Enable queue 1 completion interrupt.

 

 

0

Disable queue 1 completion interrupt.

 

 

 

14

PIE1

Queue 1 pause interrupt enable. Enables an interrupt request when queue 1 enters the pause

 

 

state. The interrupt request is initiated when conversion is complete for a CCW that has the

 

 

pause bit set.

 

 

1

Enable the queue 1 pause interrupt.

 

 

0

Disable the queue 1 pause interrupt.

 

 

 

13

SSE1

Queue 1 single-scan enable. Enables a single-scan of queue 1 after a trigger event occurs. SSE1

 

 

may be set during the same write cycle that sets the MQ1 bits for one of the single-scan queue

 

 

operating modes. The single-scan enable bit can be written to 1 or 0, but is always read as a 0,

 

 

unless the QADC is in test mode. The QADC clears SSE1 when the single-scan is complete.

 

 

1

Allow a trigger event to start queue 1 in a single-scan mode.

 

 

0

Trigger events are ignored for queue 1 single-scan modes.

 

 

 

12–8

MQ1n

Selects the operating mode for queue 1. Table 27-7shows the bits in the MQ1 field which

 

 

enable different queue 1 operating modes.

 

 

 

7–0

Reserved, should be cleared.

 

 

 

 

27-14

MCF5282 User’s Manual

MOTOROLA

Page 598
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Motorola MCF5282, MCF5281 user manual Qadc Control Register 1 QACR1, CIE1 PIE1 SSE1