User's Manual

Datalogic Scanning, Inc
959 Terry Street
Eugene, Oregon 97402
Page 18 10/23/2009
Revision X2
resynchronising.
This PS key holds a time indicating how long the master has to have not heard from the slave before it will
start using single slot packets to help the slave resynchronise.
One way to calculate a good time is to know that in low power modes, the error between the master and
slave's clock can grow at up to 500 ppm (since each device's clock is allowed to be upto 250 ppm from
nominal). The slave is likely to get problems once it has to keep its correlator open for a full slot. A full slot
is 625 us which means an maximum error between the two links of 312.5 us (as the sign of the error is also
unknown). At 500 ppm it will take about 600 ms to reach this level. This suggests that the value of this key
should be well below 600 ms.
Key Name Key
Number
Type Default Setting
PSKEY_LC_COMBO_DOT11_PIOS_ENABLE 0x004a bool TRUE
This key controls whether the PIO signalling lines defined in
PSKEY_LC_COMBO_PRIORITY_PIO_MASK will be active at boot up. The BCCMD
COEX_PRIORITY_PIOS_ON can be used to control the setting dynamically.
This key is supported only on versions of firmware that support the associated BCCMD. On firmware
versions that don't support the BCCMD, the value of PSKEY_LC_COMBO_PRIORITY_PIO_MASK
can
be altered to provide the same effect as this key.
Key Name Key Number Type Default Setting
PSKEY_LC_ENABLE_LATE_SAMPLE 0x004b bool TRUE
This key controls when the LC should sample if data is available for transmission. If enabled the LC
samples as late as possible for data being available.
Key Name Key Number Type Default Setting
PSKEY_LC_CLOCKS_CONFIG 0x004f uint16 0
Miscellaneous configuration of hardware clocks for Bluetooth.
This key should only be changed on advice from CSR.
Key Name Key
Number
Type Default Setting
PSKEY_LC_COMBO_DOT11_ESCO_RTX_PRIORITY 0x0050 bool FALSE
If this key is set to TRUE, the BlueCore's co-existence interface will treat eSCO retransmissions as being
low priority. (Note the priority of the initial transmission of the eSCO data remains high).
Key Name Key Number Type Default Setting
PSKEY_EDR_SWITCH_MODE 0x0051 edr_switch_mode HIGH_TO_LOW
The EDR_SWITCH_MODE will be used to describe the assertion method for the
EDR_SWITCH_MODE_PIO and will be used to setup the driving method, Low To High or High To Low.
Key Name Key Number Type Default Setting