MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 454

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

QASR1 — Status Register1
13.12.10 QADC64 Status Register 1 (QASR1)
MPC555
USER’S MANUAL
Bit(s)
10:15
MSB
RESERVED
6:9
0
0
RESET:
The QASR1 contains two fields: command word pointers for queue 1 and queue 2.
1
0
/
MPC556 QUEUED ANALOG-TO-DIGITAL CONVERTER MODULE-64
Name
CWP
QS
2
1
Queue status. This 4-bit read-only field indicates the current condition of queue 1 and queue 2.
QS[0:1] are associated with queue 1, and QS[2:3] are associated with queue 2. Since the queue
priority scheme interlinks the operation of queue 1 and queue 2, the status bits should be con-
sidered as one 4-bit field.
Table 13-17
Command word pointer. CWP indicates which CCW is executing at present, or was last complet-
ed. The CWP is a read-only field; writes to it have no effect.
Table 13-16 QASR0 Bit Descriptions (Continued)
3
1
4
1
0b0000
0b0001
0b0010
0b0011
0b0100
0b0101
0b0110
0b0111
0b1000
0b1001
0b1010
0b1011
0b1100
0b1101
0b1110
0b1111
CWPQ1
QS
shows the bit encodings of the QS field.
5
1
Table 13-17 Queue Status
Rev. 15 October 2000
Queue 1 idle, queue 2 idle
Queue 1 idle, queue 2 paused
Queue 1 idle, queue 2 active
Queue 1 idle, queue 2 trigger pending
Queue 1 paused, queue 2 idle
Queue 1 paused, queue 2 paused
Queue 1 paused, queue 2 active
Queue 1 paused, queue 2 trigger pending
Queue 1 active, queue 2 idle
Queue 1 active, queue 2 paused
Queue 1 active, queue 2 suspended
Queue 1 active, queue 2 trigger pending
Reserved
Reserved
Reserved
Reserved
6
1
7
1
RESERVED
Description
8
0
Description
9
0
10
1
11
1
12
1
CWPQ2
13
1
0x30 4C12
0x30 4812
MOTOROLA
14
1
13-42
LSB
15
1