
Hardware Description
MFC 2000 Multifunctional Peripheral Controller 2000
100723A
Conexant
12-11
Address:
Step Delay Timer
Register
(SSDelayTimer)
01FF8055
Address:
Step Delay Timer
Register
(SSDelayTimer)
01FF8054
Bit 15
(Not Used)
Bit 14
(Not Used)
Bit 13
bit 13 of the
delay timer
Bit 12
bit 12 of the
delay timer
Bit 11
bit 11 of the
delay timer
Bit 10
bit 10 of the
delay timer
Bit 9
bit 9 of the
delay timer
Bit 8
bit 8 of the
delay timer
Default:
Rst. Value
00h
Read Value
00h
Default:
Rst. Value
00h
Read Value
00h
Bit 7
bit 7 of the
delay timer
Bit 6
bit 6 of the
delay timer
Bit 5
bit 5 of the
delay timer
Bit 4
bit 4 of the
delay timer
Bit 3
bit 3 of the
delay timer
Bit 2
bit 2 of the
delay timer
Bit 1
bit 1 of the
delay timer
Bit 0
bit 0 of the
delay timer
The delay time interval before stepping = (n+1)/STEPCLK, n (bit[13:0] of the step delay timer): from 0 to
16383
Address:
Current Timer 1
Register
(SSCurTimer1)
01FF804D
Address:
Current Timer 1
Register
(SSCurTimer1)
01FF804C
Bit 15
(Not Used)
Bit 14
(Not Used)
Bit 13
bit 13 of the
current timer
Bit 12
bit 12 of the
current timer
Bit 11
bit 11 of the
current timer
Bit 10
bit 10 of the
current timer
Bit 9
bit 9 of the
current timer
Bit 8
bit 8 of the
current timer
Default:
Rst. Value
xx000000b
Read Value
00h
Default:
Rst. Value
00h
Read Value
00h
Bit 7
bit 7 of the
current timer
Bit 6
bit 6 of the
current timer
Bit 5
bit 5 of the
current timer
Bit 4
bit 4 of the
current timer
Bit 3
bit 3 of the
current timer
Bit 2
bit 2 of the
current timer
Bit 1
bit 1 of the
current timer
Bit 0
bit 0 of the
current timer
This register defines when to change the first driving current to the second driving current within one step time
period. The current timer 1 value in this register must be less than the step timer value set in the SStepTimer
register for the same step and greater than 0. Otherwise, the current will not be changed. Once the step timer
counts down to the current timer 1 value, the current control signals changes to I20 and I21 from I10 and I11
in the SStepCtrl register. I10 and I11 are the initial values of the current control signals within a step.
Address:
Current Timer 2
Register
(SSCurTimer2)
01FF804F
Address:
Current Timer 2
Register
(SSCurTimer2)
01FF804E
Bit 15
(Not Used)
Bit 14
(Not Used)
Bit 13
bit 13 of the
current timer
Bit 12
bit 12 of the
current timer
Bit 11
bit 11 of the
current timer
Bit 10
bit 10 of the
current timer
Bit 9
bit 9 of the
current timer
Bit 8
bit 8 of the
current timer
Default:
Rst. Value
xx000000b
Read Value
00h
Default:
Rst. Value
00h
Read Value
00h
Bit 7
bit 7 of the
current timer
Bit 6
bit 6 of the
current timer
Bit 5
bit 5 of the
current timer
Bit 4
bit 4 of the
current timer
Bit 3
bit 3 of the
current timer
Bit 2
bit 2 of the
current timer
Bit 1
bit 1 of the
current timer
Bit 0
bit 0 of the
current timer
This register defines when to change the second driving current to the third driving current within one step
time period. The current timer 2 value in this register must be less than the current timer 1 value set in the
SSCurTimer1 register for the same step and greater than 0. Otherwise, the current will not be changed. Once
the step timer counts down to the current timer 2 value, the current control signals changes to I30 and I31
from I20 and I21 in the SStepCtrl register.