Hpm Structure And Closed-Loop Behavior - Samsung S5PC110 Manual

Risc microprocessor
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S5PC110_UM

5.3.2 HPM STRUCTURE AND CLOSED-LOOP BEHAVIOR

When IEM works with closed-loop, HPM and APC1 work as shown in
HPM
hpm_targetclk_c
creset0
sample_en
pre_delay_in
delayline_end
hpm_delay_code
RCC table
APC_PL1_CALCODE
APC_PL2_CALCODE
APC_PL3_CALCODE
APC_PL4_CALCODE
APC_PL5_CALCODE
APC_PL6_CALCODE
APC_PL7_CALCODE
APC_PL8_CALCODE
Figure 5-4
0_0110
A
A
Minimum
(A+B,
1_1111)
slack_reg
B
APC_PREOFFSET
IEM Closed-Loop Voltage Generation Flow in HPM and APC1
integral =
integral_reg +
integral
((integral ≤ APC_MINVDD_LIMIT)
A
A==0
Sign
B
extender
sd_saturation
A-B
gained_slack[15:0]
Sign
ext_slack[15:0]
extender
[5:0]
(A[5:2] == 4'hF)
A
| (A[5:2] == 4'h0)
vdd_stable
step_upward
5 INTELLIGENT ENERGY MANAGEMENT
and
Figure 5-4
Figure
integral_reg[20:0] ([20:14]=closedloop_vdd)
rst_filterq |
((integral > 22'h1F_C000)
& (gained_slack > 0)
& (integral > 0))
& gained_slack < 0)
| (integral < 0)
filter_en
APC_SS_GAIN_EN
vdd_stable
APC_SAT_GAIN_EN
Shifter
& sd_saturation
& step_upward
APC_UP_GAIN_EN
& step_upward
APC_LOW_GAIN_EN
sd_low
& sd_low
Default
5-5.
21'h1F_C000
integral_reg[20:14] =
APC_MINVDD_LIMIT
integral[20:0]
loop_gain
&
APC_GAIN_SEL
APC_IGAIN3
APC_IGAIN2
APC_IGAIN4
APC_IGAIN1
5-14

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