diff --git a/artiq/frontend/artiq_ddb_template.py b/artiq/frontend/artiq_ddb_template.py
index 58883d6c8..04813ad9e 100755
--- a/artiq/frontend/artiq_ddb_template.py
+++ b/artiq/frontend/artiq_ddb_template.py
@@ -191,9 +191,9 @@ class PeripheralManager:
                         "module": "artiq.coredevice.ad9910",
                         "class": "AD9910",
                         "arguments": {{
-                            "pll_n": 32,
+                            "pll_n": {pll_n},
                             "chip_select": {chip_select},
-                            "cpld_device": "{name}_cpld"{pll_vco}{sync_delay_seed}{io_update_delay}
+                            "cpld_device": "{name}_cpld"{sw}{pll_vco}{sync_delay_seed}{io_update_delay}
                         }}
                     }}""",
                     name=urukul_name,
@@ -201,6 +201,7 @@ class PeripheralManager:
                     uchn=i,
                     sw=",\n        \"sw_device\": \"ttl_{name}_sw{uchn}\"".format(name=urukul_name, uchn=i) if len(peripheral["ports"]) > 1 else "",
                     pll_vco=",\n        \"pll_vco\": {}".format(pll_vco) if pll_vco is not None else "",
+                    pll_n=peripheral.get("pll_n", 32),
                     sync_delay_seed=",\n        \"sync_delay_seed\": \"eeprom_{}:{}\"".format(urukul_name, 64 + 4*i) if synchronization else "",
                     io_update_delay=",\n        \"io_update_delay\": \"eeprom_{}:{}\"".format(urukul_name, 64 + 4*i) if synchronization else "")
             elif dds == "ad9912":
@@ -210,16 +211,17 @@ class PeripheralManager:
                         "module": "artiq.coredevice.ad9912",
                         "class": "AD9912",
                         "arguments": {{
-                            "pll_n": 8,
+                            "pll_n": {pll_n},
                             "chip_select": {chip_select},
-                            "cpld_device": "{name}_cpld",
-                            "sw_device": "ttl_{name}_sw{uchn}"{pll_vco}
+                            "cpld_device": "{name}_cpld"{sw}{pll_vco}
                         }}
                     }}""",
                     name=urukul_name,
                     chip_select=4 + i,
                     uchn=i,
-                    pll_vco=",\n        \"pll_vco\": {}".format(pll_vco) if pll_vco is not None else "")
+                    sw=",\n        \"sw_device\": \"ttl_{name}_sw{uchn}\"".format(name=urukul_name, uchn=i) if len(peripheral["ports"]) > 1 else "",
+                    pll_vco=",\n        \"pll_vco\": {}".format(pll_vco) if pll_vco is not None else "",
+                    pll_n=peripheral.get("pll_n", 8))
             else:
                 raise ValueError
         return next(channel)