Table 28-15, Table 28-16, Table 28-17 – Motorola ColdFire MCF5281 User Manual
Page 564

Queued Analog-to-Digital Converter (QADC)
28-26
Freescale Semiconductor
Table 28-15. Input Sample Times
IST[1:0]
Input Sample Times
00
Input sample time = QCLK period
×
2
01
Input sample time = QCLK period
×
4
10
Input sample time = QCLK period
×
8
11
Input sample time = QCLK period
×
16
Table 28-16. Non-Multiplexed Channel Assignments and Signal Designations
Non-Multiplexed Input Signals
Channel Number
1
in CCW CHAN Field
1
All channels not listed are reserved or unimplemented and return undefined results.
Port Signal Name
Analog Signal Name
Other
Functions
Signal Type
Binary
Decimal
PQB0
PQB1
PQB2
PQB3
AN0
AN1
AN2
AN3
—
—
—
—
Input
Input
Input
Input
000000
000001
000010
000011
0
1
2
3
PQA0
PQA1
AN52
AN53
—
—
Input/Output
Input/Output
110100
110101
52
53
PQA3
PQA4
AN55
AN56
ETRIG1
ETRIG2
Input/Output
Input/Output
110111
111000
55
56
V
RL
V
RH
—
Low reference
High reference
—
—
—
(V
RH
–V
RL
)/2
Input
Input
—
111100
111101
111110
60
61
62
—
—
End-of-Queue Code
—
111111
63
Table 28-17. Multiplexed Channel Assignments and Signal Designations
Multiplexed Input Signals
Channel Number
1
in CCW CHAN Field
Port Signal
Name
Analog
Signal Name
Other
Functions
Signal Type
Binary
Decimal
PQB0
PQB1
PQB2
PQB3
ANW
ANX
ANY
ANZ
—
—
—
—
Input
Input
Input
Input
000XX0
000XX1
010XX0
010XX1
0, 2, 4, 6
1, 3, 5, 7
16, 18, 20, 22
17, 19, 21, 23
PQA0
PQA1
—
—
MA0
MA1
Output
Output
—
52
53
PQA3
PQA4
AN55
AN56
ETRIG1
ETRIG2
Input/Output
Input/Output
110111
111000
55
56
V
RL
V
RH
—
Low Reference
High Reference
—
—
—
(V
RH
–V
RL
)/2
Input
Input
—
111100
111101
111110
60
61
62
—
—
End-of-Queue Code
—
111111
63
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3