diff --git a/ip/sc_config/inc/sc_config_regs.h b/ip/sc_config/inc/sc_config_regs.h
index 893e739..d131fbd 100644
--- a/ip/sc_config/inc/sc_config_regs.h
+++ b/ip/sc_config/inc/sc_config_regs.h
@@ -81,10 +81,10 @@ typedef union {
 typedef union {
     struct {
         alt_u16 v_active:11;
-        alt_u8 v_backporch:6;
+        alt_u8 v_backporch:8;
         alt_u8 v_synclen:3;
         alt_u8 v_mask:6;
-        alt_u8 v_rsv:3;
+        alt_u8 v_rsv:1;
         alt_u8 v_multmode:3;
     } __attribute__((packed, __may_alias__));
     alt_u32 data;
diff --git a/rtl/scanconverter.v b/rtl/scanconverter.v
index 0db3ece..9520b92 100644
--- a/rtl/scanconverter.v
+++ b/rtl/scanconverter.v
@@ -189,7 +189,7 @@ reg [2:0] pclk_5x_cnt;
 reg [10:0] H_ACTIVE;    //max. 2047
 reg [9:0] H_AVIDSTART;  //max. 1023
 reg [10:0] V_ACTIVE;    //max. 2047
-reg [6:0] V_AVIDSTART;  //max. 127
+reg [7:0] V_AVIDSTART;  //max. 255
 reg [7:0] H_SYNCLEN;
 reg [2:0] V_SYNCLEN;
 reg [5:0] V_MASK;
@@ -227,11 +227,11 @@ reg [7:0] V_AVIDMASK_START;
 reg [10:0] V_AVIDMASK_STOP;
 
 reg [11:0] LT_POS_TOPLEFT_BOX_H_STOP;
-reg [10:0] LT_POS_TOPLEFT_BOX_V_STOP;
+reg [11:0] LT_POS_TOPLEFT_BOX_V_STOP;
 reg [11:0] LT_POS_CENTER_BOX_H_START;
 reg [11:0] LT_POS_CENTER_BOX_H_STOP;
-reg [10:0] LT_POS_CENTER_BOX_V_START;
-reg [10:0] LT_POS_CENTER_BOX_V_STOP;
+reg [11:0] LT_POS_CENTER_BOX_V_START;
+reg [11:0] LT_POS_CENTER_BOX_V_STOP;
 reg [11:0] LT_POS_BOTTOMRIGHT_H_START;
 reg [10:0] LT_POS_BOTTOMRIGHT_V_START;
 
@@ -905,12 +905,12 @@ begin
             H_AVIDSTART <= h_config[19:11] + h_config[27:20];   // Horizontal sync+backporch length (0...1023)
             H_ACTIVE <= h_config[10:0];                       // Horizontal active length (0...2047)
 
-            V_SYNCLEN <= v_config[19:17];                     // Vertical sync length (0...7)
-            V_AVIDSTART <= v_config[16:11] + v_config[19:17];   // Vertical sync+backporch length (0...127)
+            V_SYNCLEN <= v_config[21:19];                     // Vertical sync length (0...7)
+            V_AVIDSTART <= v_config[18:11] + v_config[21:19];   // Vertical sync+backporch length (0...255)
             V_ACTIVE <= v_config[10:0];                       // Vertical active length (0...2047)
 
             H_MASK <= h_config2[29:19];
-            V_MASK <= v_config[25:20];
+            V_MASK <= v_config[27:22];
 
 //            H_L5BORDER <= h_config[29] ? (11'd1920-h_config[10:0])/2 : (11'd1600-h_config[10:0])/2;
             H_L5BORDER <= h_config[29] ? H_L5BORDER_1920_tmp[10:1] : H_L5BORDER_1600_tmp[10:1];
diff --git a/software/sys_controller/tvp7002/video_modes.h b/software/sys_controller/tvp7002/video_modes.h
index 2ec7820..d20a368 100644
--- a/software/sys_controller/tvp7002/video_modes.h
+++ b/software/sys_controller/tvp7002/video_modes.h
@@ -36,7 +36,7 @@
 #define V_SYNCLEN_MIN 1
 #define V_SYNCLEN_MAX 7
 #define V_BPORCH_MIN 1
-#define V_BPORCH_MAX 63
+#define V_BPORCH_MAX 236  // 255 - 12 for L5FMT_1920x1080 - 7 for V_SYNCLEN_MAX
 #define V_ACTIVE_MIN 160
 #define V_ACTIVE_MAX 1200