Motorola MCF5281 Result Registers, Right-Justified Unsigned Result Register Rjurr, Analog

Models: MCF5282 MCF5281

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Register Descriptions

Table 27-17. Multiplexed Channel Assignments and Signal Designations

 

Multiplexed Input Signals

 

Channel Number 1

 

 

in CCW CHAN Field

 

 

 

 

 

 

 

 

 

 

Port Signal

Analog

Other

Signal Type

Binary

Decimal

Name

Signal Name

Functions

 

 

 

 

 

 

 

 

 

PQB0

ANW

Input

000XX0

0, 2, 4, 6

PQB1

ANX

Input

000XX1

1, 3, 5, 7

PQB2

ANY

Input

010XX0

16, 18, 20, 22

PQB3

ANZ

Input

010XX1

17, 19, 21, 23

 

 

 

 

 

 

PQA0

MA0

Output

52

PQA1

MA1

Output

 

53

 

 

 

 

 

 

PQA3

AN55

ETRIG1

Input/Output

110111

55

PQA4

AN56

ETRIG2

Input/Output

111000

56

 

 

 

 

 

 

VRL

Low Reference

Input

111100

60

VRH

High Reference

Input

111101

61

(VRH–VRL)/2

111110

62

End-of-Queue Code

111111

63

 

 

 

 

 

 

1All channels not listed are reserved or unimplemented and return undefined results.

27.6.8 Result Registers

The result word table is a 64 half-word (128 byte) long by 10-bit wide RAM. An entry is written by the QADC after completing an analog conversion specified by the corresponding CCW table entry.

27.6.8.1Right-Justified Unsigned Result Register (RJURR)

Field

Reset

R/W:

Field

Reset

R/W: Address

15

10

9

8

 

 

RESULT

 

 

 

 

 

0000_00

 

Undefined

 

 

 

 

 

R

 

R/W

 

 

 

 

7

 

 

0

 

 

 

 

 

RESULT

 

 

 

 

 

 

 

Undefined

 

 

 

 

 

 

 

R/W

 

 

 

 

 

 

 

IPSBAR + 0x19_0280, 0x19_02fe

 

 

 

 

 

 

Figure 27-15. Right-Justified Unsigned Result Register (RJURR)

MOTOROLA

Chapter 27. Queued Analog-to-Digital Converter (QADC)

27-29

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Motorola MCF5281, MCF5282 user manual Result Registers, Right-Justified Unsigned Result Register Rjurr, Analog