服务器的CPLD的上下电控制时序及源代码实现：
在此讲解一下服务器的CPLD的上下电控制时序及代码的实现，请大家点赞！实际项目应用！
上电时序图：
上电时序如图：
下电时序图：
下电时序如图：
文章来源：https://www.toymoban.com/news/detail-517195.html
源代码实现：
提示：下面是上面上电下电时序的逻辑代码实现，请参考：文章来源地址https://www.toymoban.com/news/detail-517195.html
/********************************************************
服务器上下电管理模块
********************************************************/
module poweron_poweroff_manager(
input clk,
input present_n, //1 在位信号
input s_present_n, //1* 在位信号
//input p5Vsus_PGood, //6 +5Vsus_PGood
input cpld_rsmrst_n, //7 3.3VSBVRM
output reg front_bp_Pwr_Enabled, // repeat 28
output reg ocp_aux_Pwr_Enabled, // repeat 19
input VsusVdd_PGood, //9
input s_VsusVdd_PGood, //9
//output reg VsusVdd_Enabled, //8 [disabled]
input Vsusa18pex_PGood, //13 Vsus18V_ON--cpld VsusA18PEX_PGood
input s_Vsusa18pex_PGood, //13 S_DUT_PRESENT & S_VsusA18PEX_PGood
//output reg Vsus18v_on, //12 S_Vsus18V_Enabled,Vsus18V_ON--cpu1 [disabled]
//output reg Vsus10v_on, //10 [disabled]
input s_Vsusa10pex_PGood, //11 S_DUT_PRESENT & Vsus10V_ON
input Vsusa10pex_PGood, //11 VsusA10PEX_PGood
//output reg Vsus33v_on, //14 Vsus33v_on [disabled]
input p33Vsus_PGood, //15 p33Vsus_PGood
input bmc_p1p15v_PGood, //18 bmc_p1p15v_PGood
input lan_Vsus_1p1v_PGood, //19 lan_Vsus_1p1v
//output reg rsmrst_n, //20 output rsmrst_n [disabled]
output reg rsmrst_d, //21 output rsmrst_d
input bmc_PwrButn_out_n, //23 bmc_PwrButn_out_n
output reg dPwr_Butn, //24 dPwr_Butn
output reg s_dPwr_Butn, //24 s_dPwr_Butn
input dsusc, //25 dsusc
output atx_Op, //26 atx_Op
input psu_Pwr_ok, //27 psu_Pwr_ok
input psu_prsnt_n, //3 psu_prsnt_n
input front_bp_PwrGood, // 29
input ocp_nic_Pwr_good, // 20
output reg ocp_main_Pwr_Enabled, // 28
output reg Vdd_Op, //28 Vdd_Op
output reg s_Vdd_Op, //28 Vdd_Op
output reg p2p5vmem_Op, //28 p2p5vmem_Op
input Vdd_PGood, //29 Vdd_PGood input 改成output reg for test
input s_Vdd_PGood, //29 s_Vdd_PGood
input p2p5vmemvpp01_PGood, //29 p2p5vmemvpp01_PGood
input s_p2p5vmemvpp01_PGood, //29 s_p2p5vmemvpp01_PGood
output reg Vsusiomem_Op, //30 Vsusiomem_Op
output reg s_Vsusiomem_Op, //30 s_Vsusiomem_Op
output reg vcca18m_Op, //30 vcca18m_Op
output reg s_vcca18m_Op, //30 s_vcca18m_Op
input Vsusiomem01_PGood, //31 Vsusiomem_PGood
input s_Vsusiomem01_PGood, //31 s_Vsusiomem_PGood
input vcca18m_PGood, //31 vcca18m_PGood
input s_vcca18m_PGood, //31 s_vcca18m_PGood
output reg vtt_Op, //32 vtt_Op
input vttm_PGood, //32
input vtt_PGood, //33 vtt_PGood
input s_vtt_PGood, //33 s_vtt_PGood
output reg pwrGood, //34 pwrGood
output reg s_PwrGood, //34 s_PwrGood
output reg vddcpu_Op, //35 vddcpu_Op
output reg s_vddcpu_Op, //35 s_vddcpu_Op
input avr_ready, //38 avr_ready
input s_avr_ready, //38 s_avr_ready
output reg cpupwrGood, //39 cpupwrGood
output reg s_cpupwrGood //39 s_cpupwrGood
);
reg front_bp_Pwr_Enabled = 1'b0;
reg ocp_aux_Pwr_Enabled = 1'b0;
//--------------------------------------------------------------
reg rsmrst_d = 1'b1; //默认RSMRST_D赋值为1，高电平
//--------------------------------------------------------------
reg dPwr_Butn = 1'b1; //-Pwr_Butn=1 初始化状态1
reg s_dPwr_Butn = 1'b1; //S_-Pwr_Butn=1 初始化状态1
//--------------------------------------------------------------
reg atx_Op = 1'b0;
reg ocp_main_Pwr_Enabled = 1'b0;
reg Vdd_Op = 1'b0;
reg s_Vdd_Op = 1'b0;
reg p2p5vmem_Op = 1'b0;
reg Vsusiomem_Op = 1'b0;
reg s_Vsusiomem_Op = 1'b0;
reg vcca18m_Op = 1'b0;
reg s_vcca18m_Op = 1'b0;
reg vtt_Op = 1'b0;
reg pwrGood = 1'b0;
reg s_PwrGood = 1'b0;
reg vddcpu_Op = 1'b0;
reg s_vddcpu_Op = 1'b0;
reg cpupwrGood = 1'b0;
reg s_cpupwrGood = 1'b0;
//--------------------------------------------------------------
reg f_pw_on = 1'b0; //开机上电完成标志
reg f_pw_off = 1'b0; //关机下电完成标志
reg [5:0] curr_state =0; //当前状态机
reg [5:0] n_state =0; //状态机
reg bmc_PwrButn_status = 1'b0; //按键状态
reg bmc_PwrButn_chgflag = 1'b0; //按键改变标志
reg f_keychange = 1'b0; //键变化标志
reg f_Bs_reboot = 1'b0; //BIOS重启标志
reg f_dsuslowtimer = 1'b0; //dsusc低计时标志
//--------------------------------------------------------------
reg f_poweron_2s = 1'b0; //开机延时2秒标志
reg ocp_nic_Pwr_good_r0 = 1'b0; //存 ocp_nic_Pwr_good 状态
reg dsusc_r0 = 1'b0; //存 dsusc 状态
reg psu_Pwr_ok_r0 = 1'b0; //存 psu_Pwr_ok 状态
reg front_bp_PwrGood_r0 = 1'b0; //存 front_bp_PwrGood状态
reg Vdd_PGood_r0 = 1'b0; //存 Vdd_PGood状态
reg s_Vdd_PGood_r0 = 1'b0; //存 s_Vdd_PGood状态
reg p2p5vmemvpp01_PGood_r0 = 1'b0; //存 p2p5vmemvpp01_PGood状态
reg s_p2p5vmemvpp01_PGood_r0 = 1'b0; //存 s_p2p5vmemvpp01_PGood状态
reg Vsusiomem01_PGood_r0 = 1'b0; //存 Vsusiomem_PGood状态
reg s_Vsusiomem01_PGood_r0 = 1'b0; //存 s_Vsusiomem_PGood状态
reg vcca18m_PGood_r0 = 1'b0; //存 vcca18m_PGood状态
reg s_vcca18m_PGood_r0 = 1'b0; //存 s_vcca18m_PGood状态
reg vttm_PGood_r0 = 1'b0; //存 vttm_PGood状态
reg vtt_PGood_r0 = 1'b0; //存 vtt_PGood状态
reg s_vtt_PGood_r0 = 1'b0; //存 s_vtt_PGood状态
reg avr_ready_r0 = 1'b0; //存 avr_ready状态
reg s_avr_ready_r0 = 1'b0; //存 s_avr_ready状态
//--------------------------------------------------------------
reg bmc_rstButn_keydown_flag = 1'b0; //BMC 按键按下标志
reg bmc_rstButn_feedback_delay_flag = 1'b0; //BMC 按键按下CPLD反馈脉冲延时标志
reg p33Vsus_PGood_f = 1'b0; //记录p33Vsus_PGood状态
//-----------------------------------------------------------------------------------------------------------
//即时跟踪更新当前的状态机
always @(posedge clk or negedge cpld_rsmrst_n )begin
if(!cpld_rsmrst_n)begin
curr_state <= 0;
end
else begin
curr_state <= n_state;
end
end
//-----------------------------------------------------------------------------------------------------------
//-----------------------------------------------------------------------------------------------------------
// 计时2S，开机复位2秒所有电源稳定了才进行操作
reg [26:0] count0; //计时5s
always@(posedge clk or negedge cpld_rsmrst_n)begin
if(!cpld_rsmrst_n)begin
count0 <= 0;
f_poweron_2s <= 1'b0;
end
else if(f_pw_off == 1'b1 && curr_state > 0 && f_poweron_2s == 1'b1) begin
count0 <= 0;
f_poweron_2s <= 1'b0;//关机2秒状态清0(关机后需要将开机复位2秒标志清0)
end
else if(f_pw_off == 1'b1 && curr_state == 0) begin
if(count0 == 27'd9999999)begin //关机重新开机计时0.2S
f_poweron_2s <= 1'b1;
count0 <= 0;
end
else count0 <= count0+1;
end
else if(cpld_rsmrst_n == 1'b1 && curr_state == 0 && f_pw_on == 1'b0 && f_pw_off == 1'b0) begin
if(count0 == 27'd99999999)begin //上电开机计时2S
f_poweron_2s <= 1'b1;
count0 <= 0;
end
else count0 <= count0+1;
end
else begin
count0 <= 0;
f_poweron_2s <= 1'b0;
end
end
//-----------------------------------------------------------------------------------------------------------
//-----------------------------------------------------------------------------------------------------------
//Power on & Power off //change
//上电 & 下电处理过程
//-----------------------------------------------------------------------------------------------------------
always @(posedge clk or negedge cpld_rsmrst_n )begin
if(!cpld_rsmrst_n)begin
n_state <= 0; //状态机清0
bmc_rstButn_feedback_delay_flag <= 1'b0; //清起延时标志0
f_pw_on <= 1'b0; //clear f_pw_on=0
p33Vsus_PGood_f <= 1'b0; //p33Vsus_PGood_f=0
rsmrst_d <= 1'b1; //默认RSMRST_D赋值为1，高电平
end
else begin
//rsmrst_d <= 1'b0; //将RSMRST_D 拉低(测试)
if(flag11_5ms == 1'b1 && curr_state < 27)begin //延时2S ==> 改为5ms
rsmrst_d <= 1'b0; //将RSMRST_D 拉低
ocp_aux_Pwr_Enabled <= 1'b1; //开启ocp_aux_Pwr_Enabled
end
if(cpld_rsmrst_n == 1'b1) begin
if(bmc_PwrButn_status != bmc_PwrButn_out_n) begin
bmc_PwrButn_status <= bmc_PwrButn_out_n;
bmc_PwrButn_chgflag <= 1'b1; //bmc_PwrButn_chgflag=1
f_keychange <= 1'b1; //keychange=1
end
if(f_dsuslowtimer == 1'b1 && flag50_4s == 1'b1 && curr_state == 0) begin
f_dsuslowtimer <= 1'b0;
f_Bs_reboot <= 1'b1; //reboot=1
end
end
if(cpld_rsmrst_n == 1'b1 && curr_state < 27 && f_pw_on == 1'b0) begin
//在cpld_rsmrst_n为1时，还没有开机状态下跟随bmcButn的状态变化
if (bmc_PwrButn_chgflag == 1'b1)begin
bmc_PwrButn_chgflag <= 1'b0; //bmc_PwrButn_chgflag=0
if (bmc_PwrButn_out_n == 1'b1)begin
dPwr_Butn <= 1'b1; //-Pwr_Butn=1
s_dPwr_Butn <= 1'b1; //S_-Pwr_Butn=1
end
else begin
dPwr_Butn <= 1'b0; //-Pwr_Butn=0
s_dPwr_Butn <= 1'b0; //S_-Pwr_Butn=0
end
end
end
if(cpld_rsmrst_n == 1'b1 && curr_state == 40 && f_pw_on == 1'b1) begin
//在cpld_rsmrst_n为1时，还没有开机状态下跟随bmcButn的状态变化[长按关机]
if (bmc_PwrButn_chgflag == 1'b1)begin
bmc_PwrButn_chgflag <= 1'b0; //bmc_PwrButn_chgflag=0
if(bmc_PwrButn_out_n == 1'b1)begin
dPwr_Butn <= 1'b1; //-Pwr_Butn=1
s_dPwr_Butn <= 1'b1; //S_-Pwr_Butn=1
end
else begin
dPwr_Butn <= 1'b0; //-Pwr_Butn=0
s_dPwr_Butn <= 1'b0; //S_-Pwr_Butn=0
end
end
end
case(curr_state)
0:begin //开机延时2秒使电源稳定再进入处理
if (f_poweron_2s == 1'b1 && f_keychange == 1'b1 && (bmc_PwrButn_out_n == 1'b0 || (f_Bs_reboot == 1'b1 && dsusc == 1'b1))) begin
f_pw_off <= 1'b0; //f_pw_off=0清关机状态0
f_keychange <= 1'b0; //keychange=0清0
f_Bs_reboot <= 1'b0; //reboot=0
f_dsuslowtimer <= 1'b0;
n_state <= 18; //18Step
end
end
18:begin
if (cpld_rsmrst_n == 1'b1)begin
n_state <= 19; //19Step
end
end
19:begin
if (cpld_rsmrst_n == 1'b1)begin
n_state <= 20; //20Step
end
end
20:begin //读取1个输入状态
ocp_nic_Pwr_good_r0 <= ocp_nic_Pwr_good; //存 ocp_nic_Pwr_good 状态
//n_state <= 21; //21Step
n_state <= 25; //25Step 直接跳到=25
end
21:begin
n_state <= 22; //22Step 暂无逻辑，直接跳过
end
22:begin
n_state <= 23; //23Step 暂无逻辑，直接跳过
end
23:begin
//if(bmc_rstButn_keydown_flag == 1'b1)begin
// n_state <= 24; //24Step
//end
//由于 bmc_rstButn_keydown_flag信号由BMC输出没有，上述逻辑暂改为 直接跳过
n_state <= 24; //24Step 暂无逻辑，直接跳过
end
24:begin
//if(bmc_rstButn_keydown_flag == 1'b1)begin
// dPwr_Butn <= 1'b0; //-Pwr_Butn=0
// s_dPwr_Butn <= 1'b0; //S_-Pwr_Butn=0
// bmc_rstButn_feedback_delay_flag <= 1'b1; //置起延时标志1
//end
//if(flag24_20ms == 1'b1)begin //延时20mS
// dPwr_Butn <= 1'b1; //-Pwr_Butn=1
// s_dPwr_Butn <= 1'b1; //S_-Pwr_Butn=1
// n_state <= 25; //25Step
//end
//由于 bmc_rstButn_keydown_flag信号由BMC输出没有，上述逻辑暂改为 直接清0后跳过
//dPwr_Butn <= 1'b0; //-Pwr_Butn=0
//s_dPwr_Butn <= 1'b0; //S_-Pwr_Butn=0
n_state <= 25; //25Step 暂无逻辑，直接跳过
end
25:begin //读取1个输入状态
dsusc_r0 <= dsusc; //存 dsusc 状态
n_state <= 26; //26Step 检测-SUSC 合并到26Step
end
26:begin //If -SUSC=1&& DUT_PRESENT_N=0， ATX_ON+=1
if(dsusc == 1'b1 && present_n == 1'b0)begin
//由于 present_n信号暂时没有，上述逻辑暂改变了
//if(dsusc == 1'b1)begin
atx_Op <= 1'b1; //开启 ATX_ON+=1
n_state <= 27; //27Step
end
end
27:begin //读取1个输入状态
f_keychange <= 1'b0; //keychange=0清0
//---------------------------------恢复Butn状态
dPwr_Butn <= 1'b1; //-Pwr_Butn=1
s_dPwr_Butn <= 1'b1; //S_-Pwr_Butn=1
//---------------------------------
psu_Pwr_ok_r0 <= psu_Pwr_ok; //存 PSU_Pwr_OK 状态
if(flag27_20ms == 1'b1)begin //延时20mS
n_state <= 28; //28Step
end
end
28:begin
if(psu_Pwr_ok == 1'b1)begin
front_bp_Pwr_Enabled <= 1'b1; //开启 FRONT_BP_Pwr_Enabled=1
ocp_main_Pwr_Enabled <= 1'b1; //OCP_MAIN_Pwr_Enabled=1
if(flag28_5ms == 1'b1)begin
Vdd_Op <= 1'b1; //set Vdd_ON+=1
p2p5vmem_Op <= 1'b1; //set +2.5VMEM_ON+=1
end
if(flag282_5ms == 1'b1 && s_present_n == 1'b0)begin //第二CPU在位
s_Vdd_Op <= 1'b1; //set S_Vdd_ON+=1
end
if(flag28_5ms == 1'b1 && (flag282_5ms == 1'b1 || s_present_n == 1'b1))begin
//上面2个信号全部置起来了再进行下一步
n_state <= 29; //29Step
end
end
end
29:begin //读取5个输入状态
front_bp_PwrGood_r0 <= front_bp_PwrGood; //存 front_bp_PwrGood状态
Vdd_PGood_r0 <= Vdd_PGood; //存 Vdd_PGood状态
s_Vdd_PGood_r0 <= s_Vdd_PGood; //存 s_Vdd_PGood状态
p2p5vmemvpp01_PGood_r0 <= p2p5vmemvpp01_PGood; //存 p2p5vmemvpp01_PGood状态
s_p2p5vmemvpp01_PGood_r0 <= s_p2p5vmemvpp01_PGood;//存 s_p2p5vmemvpp01_PGood状态
if(flag29_20ms == 1'b1)begin //延时20mS
n_state <= 30; //30Step
end
end
30:begin
//If +2.5VMEMVPP01_PGood=1, VsusIOMEM_ON+=1
//If S_+2.5VMEMVPP01_PGood=1, S_VsusIOMEM_ON+=1
//If Vdd_PGood=1, VCCA18M_ON+=1
//If S_Vdd_PGood=1, S_VCCA18M_ON+=1
if(p2p5vmemvpp01_PGood == 1'b1) begin
Vsusiomem_Op <= 1'b1; //set VsusIOMEM_ON+=1
end
if(s_p2p5vmemvpp01_PGood == 1'b1 && s_present_n == 1'b0) begin //第二CPU在位
s_Vsusiomem_Op <= 1'b1; //set S_VsusIOMEM_ON+=1
end
if(Vdd_PGood == 1'b1) begin
vcca18m_Op <= 1'b1; //set VCCA18M_ON+=1
end
if(s_Vdd_PGood == 1'b1 && s_present_n == 1'b0) begin //第二CPU在位
s_vcca18m_Op <= 1'b1; //set S_VCCA18M_ON+=1
end
if(p2p5vmemvpp01_PGood == 1'b1 && Vdd_PGood == 1'b1 && ((s_p2p5vmemvpp01_PGood == 1'b1 && s_Vdd_PGood == 1'b1) || s_present_n == 1'b1)) begin
//上面4个信号全部置起来了再进行下一步
n_state <= 31; //31Step
end
end
31:begin //读取4个输入状态
Vsusiomem01_PGood_r0 <= Vsusiomem01_PGood; //存 Vsusiomem_PGood状态
s_Vsusiomem01_PGood_r0 <= s_Vsusiomem01_PGood; //存 s_Vsusiomem_PGood状态
vcca18m_PGood_r0 <= vcca18m_PGood; //存 vcca18m_PGood状态
s_vcca18m_PGood_r0 <= s_vcca18m_PGood; //存 s_vcca18m_PGood状态
if(flag31_20ms == 1'b1)begin //延时20mS
n_state <= 32; //32Step
end
end
32:begin
//If VCCA18M_PGood=1, VTT_ON+=1
vttm_PGood_r0 <= vttm_PGood; //存 vttm_PGood状态
if(vcca18m_PGood == 1'b1) begin
vtt_Op <= 1'b1; //set VTT_ON+=1
n_state <= 33; //33Step
end
end
33:begin //读取两个输入状态
vtt_PGood_r0 <= vtt_PGood; //存 vtt_PGood状态
s_vtt_PGood_r0 <= s_vtt_PGood; //存 s_vtt_PGood状态
if(flag33_20ms == 1'b1)begin //延时20mS
n_state <= 34; //34Step
end
end
34:begin
//If VTTM_PGood=1 & S_VTT_PGood=1， S_PwrGood=1
//If VTTM_PGood=1 & VTT_PGood=1， PWRGood=1
//if(vttm_PGood == 1'b1 && vtt_PGood == 1'b1) begin
if(vtt_PGood == 1'b1) begin
pwrGood <= 1'b1; //set PWRGood=1
end
//if(vttm_PGood == 1'b1 && s_vtt_PGood == 1'b1 && s_present_n == 1'b0) begin //第二CPU在位
if(s_vtt_PGood == 1'b1 && s_present_n == 1'b0) begin //第二CPU在位
s_PwrGood <= 1'b1; //set S_PwrGood=1
end
//if(vttm_PGood == 1'b1 && vtt_PGood == 1'b1 && (s_vtt_PGood == 1'b1 || s_present_n == 1'b1)) begin
if(vtt_PGood == 1'b1 && (s_vtt_PGood == 1'b1 || s_present_n == 1'b1)) begin
//上面3个信号全部置起来了再进行下一步
n_state <= 35; //35Step
end
end
35:begin
//If PWRGood=1， VDDCPU_ON+=1
//If S_PwrGood=1， S_VDDCPU_ON+=1
//if(pwrGood == 1'b1) begin
// vddcpu_Op <= 1'b1; //set PVDDCPU_ON+=1
//end
//if(s_PwrGood == 1'b1) begin
// s_vddcpu_Op <= 1'b1; //set S_VDDCPU_ON+=1
//end
//由于 PWRGood为输出信号，上述逻辑改为10ms延时后直接置vddcpu_Op 和 s_vddcpu_Op
if(flag35_10ms == 1'b1) begin
vddcpu_Op <= 1'b1; //set PVDDCPU_ON+=1
if(s_present_n == 1'b0) begin //第二CPU在位
s_vddcpu_Op <= 1'b1; //set S_VDDCPU_ON+=1
end
n_state <= 36; //36Step
end
end
36:begin
n_state <= 37; //37Step 暂无逻辑，直接跳过
end
37:begin
n_state <= 38; //38Step 暂无逻辑，直接跳过
end
38:begin //读取两个输入状态
avr_ready_r0 <= avr_ready; //存 avr_ready状态
s_avr_ready_r0 <= s_avr_ready; //存 s_avr_ready状态
if(flag38_20ms == 1'b1)begin //延时20mS
n_state <= 39; //39Step
end
end
39:begin
//If AVR_ready=1， CPUPWRGood=1
//If S_AVR_ready=1， S_CPUPWRGood=1
if(avr_ready == 1'b1) begin
cpupwrGood <= 1'b1; //set CPUPWRGood=1
end
if(s_avr_ready == 1'b1 && s_present_n == 1'b0) begin //第二CPU在位
s_cpupwrGood <= 1'b1; //set S_CPUPWRGood=1
end
if(avr_ready == 1'b1 && (s_avr_ready == 1'b1 || s_present_n == 1'b1)) begin
//上面2个信号全部置起来了再进行下一步
f_pw_on <= 1'b1; //set f_pw_on=1
n_state <= 40; //40Step
end
end
40:begin
if(f_pw_on == 1'b1 && dsusc == 1'b0) begin
//f_pw_on <= 1'b0; //set f_pw_on=0
n_state <= 41; //41Step
// 进行下电处理
end
end
//-----------------------------------------------------------------------------------------------
//进行下电处理
41:begin //关cpupwrGood
//---------------------------------恢复Butn状态
dPwr_Butn <= 1'b1; //-Pwr_Butn=1
s_dPwr_Butn <= 1'b1; //S_-Pwr_Butn=1
//---------------------------------
if(f_pw_on == 1'b1) begin
s_cpupwrGood <= 1'b0;
cpupwrGood <= 1'b0;
if(flag41_20ms == 1'b1)begin //延时20mS
n_state <= 42; //42Step
end
end
end
42:begin //关vddcpu_Op
if(f_pw_on == 1'b1) begin
s_vddcpu_Op <= 1'b0;
vddcpu_Op <= 1'b0;
if(flag42_20ms == 1'b1)begin //延时20mS
n_state <= 43; //43Step
end
end
end
43:begin //关pwrGood
if(f_pw_on == 1'b1) begin
s_PwrGood <= 1'b0;
pwrGood <= 1'b0;
if(flag43_20ms == 1'b1)begin //延时20mS
n_state <= 44; //44Step
end
end
end
44:begin //关vtt_Op
if(f_pw_on == 1'b1) begin
vtt_Op <= 1'b0;
if(flag44_20ms == 1'b1)begin //延时20mS
n_state <= 45; //45Step
end
end
end
45:begin //关Vsusiomem_Op
if(f_pw_on == 1'b1) begin
s_Vsusiomem_Op <= 1'b0;
Vsusiomem_Op <= 1'b0;
if(flag45_20ms == 1'b1)begin //延时20mS
n_state <= 46; //46Step
end
end
end
46:begin //关vcca18m_Op
if(f_pw_on == 1'b1) begin
s_vcca18m_Op <= 1'b0;
vcca18m_Op <= 1'b0;
if(flag46_20ms == 1'b1)begin //延时20mS
n_state <= 47; //47Step
end
end
end
47:begin //关p2p5vmem_Op
if(f_pw_on == 1'b1) begin
p2p5vmem_Op <= 1'b0;
if(flag47_20ms == 1'b1)begin //延时20mS
n_state <= 48; //48Step
end
end
end
48:begin //关Vdd_Op
if(f_pw_on == 1'b1) begin
s_Vdd_Op <= 1'b0;
Vdd_Op <= 1'b0;
if(flag48_20ms == 1'b1)begin //延时20mS
n_state <= 49; //49Step
end
end
end
49:begin //关atx_Op
if(f_pw_on == 1'b1) begin
atx_Op <= 1'b0;
if(flag49_20ms == 1'b1)begin //延时20mS
front_bp_Pwr_Enabled <= 1'b0; //回到复位状态
ocp_aux_Pwr_Enabled <= 1'b0; //回到复位状态
ocp_main_Pwr_Enabled <= 1'b0; //回到复位状态
f_pw_on <= 1'b0; //清开机状态0
f_pw_off <= 1'b1;//置关机状态1
if(bmc_PwrButn_out_n == 1'b1)begin
f_keychange <= 1'b1;
f_dsuslowtimer <= 1'b1; //置dsuslow计时标志
end
else begin
f_keychange <= 1'b0; //keychange=0清0
end
n_state <= 0; //0Step 回到复位状态
end
end
end
//-----------------------------------------------------------------------------------------------
default: n_state <= n_state;
endcase
end
end
//-----------------------------------------------------------------------------------------------------------
endmodule
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