User's Manual
Datalogic Scanning, Inc
959 Terry Street
Eugene, Oregon 97402
Page 5 10/23/2009
Revision X2
to the accuracy of that external clock.
PSKEY_DEEP_SLEEP_STATE
= ALWAYS_ACCURATE (3):
PSKEY_DEEP_SLEEP_USE_EXTERNAL_CLOCK should be TRUE, so set device drift to the accuracy
of the external clock.
Key Name Key Number Type Default Setting
PSKEY_DEVICE_JITTER 0x0005 uint16 10
This should hold the local device's radio jitter in microseconds. (LMP v1.1, section 5.2.)
This value is used in LMP_timing_accuracy_res messages sent to peers. This is the only use made of this
pskey.
Key Name Key Number Type Default Setting
PSKEY_MAX_ACLS 0x000d uint16 7
The maximum number of concurrent ACL connections to other devices.
Links to remote devices use substantial amounts of RAM to maintain connection state, so this value should
be kept modest. It is advisable to trim this value to match the application, allowing any liberated RAM to
be used elsewhere. The value must be reduced if the chip is running any of the higher layers of the
Bluetooth stack as these take from the common supply of RAM.
Key Name Key Number Type Default Setting
PSKEY_MAX_SCOS 0x000e uint16 3
The maximum number of SCO links to (all) other devices.
The firmware may use a value lower than 3, e.g., because SCO data can only flow over the BlueCore01b's
single PCM interface.
Key Name Key Number Type Default Setting
PSKEY_MAX_REMOTE_MASTERS 0x000f uint16 2
The local device's maximum number of remote piconet masters.
Connecting to multiple remote masters implies the use of scatternets. The current firmware supports one
permanent remote master, plus a second remote master in a temporary state either for performing a remote
name request or in order to connect by a role switch to become a slave.
See the description of PSKEY_ENABLE_MASTERY_WITH_SLAVERY
.
Key Name Key
Number
Type Default Setting
PSKEY_ENABLE_MASTERY_WITH_SLAVERY 0x0010 bool TRUE
If set TRUE (value 1) then the firmware is configured to support being a master of its own piconet at the
same time as being a slave in one or more other piconets. This implies the use of scatternets.