User's Manual

FLC-BTM805 Datasheet
Flaircomm Microelectronics Confidential
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11
VDD_PADS
VDD
Positive supply for all other digital input/output
ports including PIO[6.0] and both PCMs
12
VREG_EN RST#
Input with strong internal pull-
down
1. Active low reset ;
2. Take high to enable internal regulators
13
VDD_IN
Power supply
Input to internal high-voltage regulator
14
VREG_OUT_HV
Analogue regulator output
Out from internal high-voltage regulator and input
to low-voltage regulators
15
UART_TX
Bi-directional, tristate, with weak
internal pull-up
UART data output, active high
16
UART_RX
Input with weak internal pull-up
UART data input, active high
17
UART_RTS
Bi-directional input, with weak
internal pull-up
UART request to send, active low
18
UART_CTS
Input, with weak internal pull-up
UART clear to send, active low
19
VDD_RADIO
Power supply decoupler
Connect a 2.2uF caps on this pin
20
SPI_PCM#_SEL
Input with internal pull down
SPI / PCM selection
High – SPI is selected
Low – PCM is selected
21
PCM_IN/
SPI_MOSI /
PIO[21]
Input, tristate, with weak internal
pull-down
PCM synchronous data input
SPI data input
Programmable input/output line
22
PCM_CLK/
SPI_CLK/
PIO[24]
Bidirectional, tristate, with weak
internal pull-down
PCM synchronous data clock
SPI clock
Programmable input/output line
23
PCM_SYNC/
SPI_CS#/
PIO[23]
Bidirectional, tristate, with weak
internal pull-down
PCM synchronous data sync
SPI chip select, active low
Programmable input/output line
24
PCM_OUT/
SPI_MISO/
PIO[22]
Output, tri-state, with weak
internal pull-down
PCM synchronous data output
SPI data output
Programmable input/output line
25
GND
Ground
Ground
26
GND
Ground
Ground
27
GND
Ground
Ground
28
GND
Ground
Ground
Table 3: BTM805CL2A Pin Definition
BTM805CL2B Pin Definition:
Pin
Symbol
I/O Type
Description
1
NC
-
Not in use
2
GND
Ground
Ground
3
VDD_AUX
Analogue Regulator decoupler
2.2uF cap connect to this pin
4
PIO0
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line
5
PIO3
Bi-directional with programmable
strength internal pull-up/down
Programmable input/output line