diff --git a/slsDetectorServers/jungfrauDetectorServer/RegisterDefs.h b/slsDetectorServers/jungfrauDetectorServer/RegisterDefs.h
index 922f03440..2eff513e6 100644
--- a/slsDetectorServers/jungfrauDetectorServer/RegisterDefs.h
+++ b/slsDetectorServers/jungfrauDetectorServer/RegisterDefs.h
@@ -98,6 +98,21 @@
 #define TEMPERATURE_POLARITY_BIT            (11)
 #define TEMPERATURE_POLARITY_MSK            (0x00000001 << TEMPERATURE_POLARITY_BIT)
 
+/* Config Status Register for chip 1.1 */
+#define CONFIG_V11_STATUS_REG               (0x1D << MEM_MAP_SHIFT)
+
+#define CONFIG_V11_STATUS_FLTR_CLL_OFST         (0) 
+#define CONFIG_V11_STATUS_FLTR_CLL_MSK          (0x00000FFF << CONFIG_V11_STATUS_FLTR_CLL_OFST)
+#define CONFIG_V11_STATUS_STRG_CLL_OFST         (12) 
+#define CONFIG_V11_STATUS_STRG_CLL_MSK          (0x0000000F << CONFIG_V11_STATUS_STRG_CLL_OFST)
+// CSM mode = high current (100%), low current (16%)
+#define CONFIG_V11_STATUS_CRRNT_SRC_MODE_OFST   (19) 
+#define CONFIG_V11_STATUS_CRRNT_SRC_MODE_MSK    (0x00000001 << CONFIG_V11_STATUS_CRRNT_SRC_MODE_OFST)
+#define CONFIG_V11_STATUS_FLTR_RSSTR_OFST       (21) 
+#define CONFIG_V11_STATUS_FLTR_RSSTR_MSK        (0x00000001 << CONFIG_V11_STATUS_FLTR_RSSTR_OFST)
+#define CONFIG_V11_STATUS_AUTO_MODE_OVRRD_OFST  (23) 
+#define CONFIG_V11_STATUS_AUTO_MODE_OVRRD_MSK   (0x00000001 << CONFIG_V11_STATUS_AUTO_MODE_OVRRD_OFST)
+
 /* Get Frames from Start 64 bit register (frames from last reset using
  * CONTROL_CRST) */
 #define FRAMES_FROM_START_LSB_REG           (0x22 << MEM_MAP_SHIFT)
@@ -159,8 +174,10 @@
 // (RDT + 1) * 25ns
 #define CONFIG_RDT_TMR_OFST                 (0)
 #define CONFIG_RDT_TMR_MSK                  (0x0000FFFF << CONFIG_RDT_TMR_OFST)
+// if 0, outer is the primary interface
+// bottom via port 0 (outer)
 #define CONFIG_OPRTN_MDE_2_X_10GbE_OFST     (16)
-#define CONFIG_OPRTN_MDE_2_X_10GbE_MSK      (0x00000001 << CONFIG_OPRTN_MDE_2_X_10GbE_OFST) // if 0, outer is the primary interface
+#define CONFIG_OPRTN_MDE_2_X_10GbE_MSK      (0x00000001 << CONFIG_OPRTN_MDE_2_X_10GbE_OFST) 
 #define CONFIG_INNR_PRIMRY_INTRFCE_OFST     (17)
 #define CONFIG_INNR_PRIMRY_INTRFCE_MSK      (0x00000001 << CONFIG_INNR_PRIMRY_INTRFCE_OFST)
 #define CONFIG_READOUT_SPEED_OFST           (20)
@@ -172,6 +189,8 @@
 #define CONFIG_TDMA_ENABLE_MSK              (0x00000001 << CONFIG_TDMA_ENABLE_OFST)
 #define CONFIG_TDMA_TIMESLOT_OFST           (25) // 1ms
 #define CONFIG_TDMA_TIMESLOT_MSK            (0x0000001F << CONFIG_TDMA_TIMESLOT_OFST)
+#define CONFIG_BOTTOM_INVERT_STREAM_OFST    (30)
+#define CONFIG_BOTTOM_INVERT_STREAM_MSK     (0x0000001F << CONFIG_BOTTOM_INVERT_STREAM_OFST)
 #define CONFIG_ETHRNT_FLW_CNTRL_OFST        (31)
 #define CONFIG_ETHRNT_FLW_CNTRL_MSK         (0x00000001 << CONFIG_ETHRNT_FLW_CNTRL_OFST)
 
@@ -234,8 +253,6 @@
 #define CONFIG_V11_FLTR_RSSTR_MSK           (0x00000001 << CONFIG_V11_FLTR_RSSTR_OFST)
 #define CONFIG_V11_AUTO_MODE_OVRRD_OFST     (23) 
 #define CONFIG_V11_AUTO_MODE_OVRRD_MSK      (0x00000001 << CONFIG_V11_AUTO_MODE_OVRRD_OFST)
-#define CONFIG_V11_WR_CHIP_CNFG_OFST        (31) 
-#define CONFIG_V11_WR_CHIP_CNFG_MSK         (0x00000001 << CONFIG_V11_WR_CHIP_CNFG_OFST)
 
 /* Sample Register */
 #define SAMPLE_REG                          (0x59 << MEM_MAP_SHIFT)
@@ -378,6 +395,11 @@
 #define FRAME_NUMBER_LSB_REG                (0x6A << MEM_MAP_SHIFT)
 #define FRAME_NUMBER_MSB_REG                (0x6B << MEM_MAP_SHIFT)
 
+/* Comparator disable time (chipv1.1) 32 bit register tT = T x 25 ns
+Time before end of exposure when comparator is disabled */
+#define COMP_DSBLE_TIME_REG                  (0x6C << MEM_MAP_SHIFT)
+
+
 /* Trigger Delay 32 bit register */
 #define SET_TRIGGER_DELAY_LSB_REG           (0x70 << MEM_MAP_SHIFT)
 #define SET_TRIGGER_DELAY_MSB_REG           (0x71 << MEM_MAP_SHIFT)
diff --git a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
index c2453d0bb..6c92644f8 100644
--- a/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
+++ b/slsDetectorServers/jungfrauDetectorServer/slsDetectorFunctionList.c
@@ -794,6 +794,16 @@ int selectStoragecellStart(int pos) {
         bus_w(addr, bus_r(addr) & ~mask);
         bus_w(addr, bus_r(addr) | ((value << offset) & mask));
     }
+
+    // read value back
+    // chipv1.1, writing and reading registers are different
+#ifndef VIRTUAL
+    if (getChipVersion() == 11) {
+        addr = CONFIG_V11_STATUS_REG;
+        mask = CONFIG_V11_STATUS_STRG_CLL_MSK;
+        offset = CONFIG_V11_STATUS_STRG_CLL_OFST;
+    }
+#endif
     int retval = ((bus_r(addr) & mask) >> offset);
     if (getChipVersion() == 11) {
         // get which bit
@@ -1627,7 +1637,9 @@ void configureChip() {
     // only for chipv1.1
     if (chipVersion == 11) {
         LOG(logINFOBLUE, ("Configuring chip\n"));
-        bus_w(CONFIG_V11_REG, bus_r(CONFIG_V11_REG) & CONFIG_V11_WR_CHIP_CNFG_MSK);
+        // write same register values back to configure chip
+        uint32_t val = bus_r(CONFIG_V11_REG);
+        bus_w(CONFIG_V11_REG, val);
         chipConfigured = 1;
     }
 }