User's Manual

SDC-SSD40NBT
User’s Manual, version 4.1
Americas: [phone] Option 3
Europe: [phone]
Hong Kong: [phone] x026
www.lairdtech.com/wireless
19
Laird Technologies
Pin
Number
Pin
Name
I/O
Voltage
Reference
Description
20
BT_WAKE_B
I
VDDIO
Bluetooth device wake-up: Signal from the
host to the SDC-SSD40NBT indicating that
the host requires attention.
Asserted: Bluetooth device must wake-up or
remain awake
Deasserted: Bluetooth device may sleep when
sleep criteria are met
The polarity of this signal is software
configurable and can be asserted high or low.
Note: The default is low but this is only
applicable for specific Bluetooth Sleep mode
settings. By default, the radio has “No Sleep
Mode Set”.
21
BT_HOST_WAKE_B
O
VDDIO
Host Wake-up
Signal from the SDC-SSD40NBT to the host
indicating that the radio requires attention.
Asserted: Host device must wake-up or
remain awake.
Deasserted: Host device may sleep when
sleep criteria are met
The polarity of this signal is software
configurable and can be asserted high or low.
Note: The default is low but this is only
applicable for specific Bluetooth Sleep mode
settings. By default, the radio has “No Sleep
Mode Set”.
22
RSVD
O
VDDIO
Bluetooth LED Activity Indicator;
active high.
23
VDD3_3
-
3.3V Power
24
GND
-
Ground
25
BT_UART_CTS_N
I
VDDIO
Clear-to-send signal for the Bluetooth UART
interface, active low.
26
BT_UART_RTS_N
O
VDDIO
Request-to-send signal for the Bluetooth
UART interface, active low.
27
BT_UART_TXD
O
VDDIO
Bluetooth UART Serial Output.
28
BT_UART_RXD
I
VDDIO
Bluetooth UART Serial Input.
29
BT_PCM_SYNC
I/O
VDDIO
PCM sync signal
Default master (output);
can be configured slave (input)
30
BT_PCM_IN
I
VDDIO
PCM data input
31
BT_PCM_CLK
I/O
VDDIO
PCM clock
32
VDDIO
VDDIO
1.8/3.3V I/O Power
This is the reference pins for all I/O signaling
pins;
it accepts 1.8VDC or 3.3VDC from the host.
33
RSVD
O
VDDIO
Reserved for WLAN LED activity indicator.
34
RSVD
O
VDDIO
Reserved for Wake on Wireless.
35
SYS_RST_L
I
VDDIO
Resets the WLAN radio, active low. Must be
asserted when power is first applied to the
radio, then released before
any transaction can start (see Note).