BT85x Series
Datasheet
Embedded Wireless Solutions Support Center:
http://ews-support.lairdtech.com
www.lairdtech.com/bluetooth
9
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Parameter
Min
Typ.
Max
BT. Spec.
Unit
Initial Carrier Frequency Tolerance
-
10
-
±
75
kHz
20 dB Bandwidth
-
920
-
1000
kHz
In-Band Spurious
Emissions
1.0 MHz < |M-N| < 1.5 MHz
-
-
-39
-26
dBc
1.5 MHz < |M-N| < 2.5 MHz
-
-
-39
-20
dBm
|M-N|
≧
2.5 MHz
-
-
-47
-40
dBm
Drift rate
-
10
-
+/-25
kHz
∆
F1Avg
-
152
-
140<>175
kHz
∆
F2Max
100
-
-
99.9
%
∆
F2Avg /
∆
F1Avg
-
1.0
-
≧
0.8
LE
∆
F1Avg
-
245
-
225<>275
kHz
LE
∆
F2Max
100
-
-
99.9
%
LE
∆
F2Avg /
∆
F1Avg
-
1.0
-
≧
0.8
Table 7: BDR/EDR/LE receiver sensitivity (Input = 3V3 @ 25
℃
℃
℃
℃
)
Parameter
Conditions
Min
Typ.
Max
BT. Spec.
Unit
Sensitivity
GFSK, 0.1% BER, 1Mbps
-90
-70
dBm
π
/4-DQPSK, 0.01% BER, 2Mbps
-94
-70
dBm
8-DPSK, 0.01% BER, 3Mbps
-87
-70
dBm
GFSK, 30.8% PER, 1Mbps
-94
-70
dBm
Sensitivity variation
All Modulations (Over BT band)
2
dB
8
I
NTERFACE
8.1.
Global Coexistence Interface
The BT850-Sx supports the proprietary Cypress Global Coexistence Interface (GCI) which is a two-wire interface.
The following key features are associated with the interface:
Enhanced coexistence data can be exchanged over GCI_SECI_IN and GCI_SECI_OUT a two-wire interface,
one serial input (GCI_SECI_IN), and one serial output (GCI_SECI_OUT). The both pins are controlled by the
configuration file that is stored in EEPROM from the host.
It supports generic UART communication between WLAN and Bluetooth devices.
To conserve power, it is disabled when inactive.
It supports automatic resynchronization upon waking from sleep mode.
It supports a baud rate of up to 4 Mbps.
Error! Reference source not found.
shows the 2-wire BT coexistence interface assignments.
Table 8: BT GCI two-wire coexistence
Coexistence Signal Name
Signal Assignment
Pin Number
BT_SECI_IN
GPIO_6
B6
BT_SECI_OUT
GPIO_7
C6
