MC68336/376
REGISTER SUMMARY
MOTOROLA
USER’S MANUAL
Rev. 15 Oct 2000
D-33
RES — Queue 2 Resume
RES selects the resumption point after queue 2 is suspended by queue 1. If RES is
changed during execution of queue 2, the change is not recognized until an end-of-
queue condition is reached, or the queue operating mode of queue 2 is changed.
0 = After suspension, begin execution with the first CCW in queue 2 or the current
Table D-26 Queue 2 Operating Modes
MQ2[4:0]
Queue 2 Operating Mode
00000
Disabled mode, conversions do not occur
00001
Software triggered single-scan mode (started with SSE2)
00010
External trigger rising edge single-scan mode (on ETRIG2 pin)
00011
External trigger falling edge single-scan mode (on ETRIG2 pin)
00100
Interval timer single-scan mode: interval = QCLK period x 27
00101
Interval timer single-scan mode: interval = QCLK period x 28
00110
Interval timer single-scan mode: interval = QCLK period x 29
00111
Interval timer single-scan mode: interval = QCLK period x 210
01000
Interval timer single-scan mode: interval = QCLK period x 211
01001
Interval timer single-scan mode: interval = QCLK period x 212
01010
Interval timer single-scan mode: interval = QCLK period x 213
01011
Interval timer single-scan mode: interval = QCLK period x 214
01100
Interval timer single-scan mode: interval = QCLK period x 215
01101
Interval timer single-scan mode: interval = QCLK period x 216
01110
Interval timer single-scan mode: interval = QCLK period x 217
01111
Reserved mode
10000
Reserved mode
10001
Software triggered continuous-scan mode (started with SSE2)
10010
External trigger rising edge continuous-scan mode (on ETRIG2 pin)
10011
External trigger falling edge continuous-scan mode (on ETRIG2 pin)
10100
Periodic timer continuous-scan mode: period = QCLK period x 27
10101
Periodic timer continuous-scan mode: period = QCLK period x 28
10110
Periodic timer continuous-scan mode: period = QCLK period x 29
10111
Periodic timer continuous-scan mode: period = QCLK period x 210
11000
Periodic timer continuous-scan mode: period = QCLK period x 211
11001
Periodic timer continuous-scan mode: period = QCLK period x 212
11010
Periodic timer continuous-scan mode: period = QCLK period x 213
11011
Periodic timer continuous-scan mode: period = QCLK period x 214
11100
Periodic timer continuous-scan mode: period = QCLK period x 215
11101
Periodic timer continuous-scan mode: period = QCLK period x 216
11110
Periodic timer continuous-scan mode: period = QCLK period x 217
11111
Reserved mode