Rainbow Electronics BTM -140 - Manual (Page 4)

BTM-130/140
Pin Functions
No. Pin Name Pin Type Pin Description
1 GND GND Common Ground
2 ANT Analogue Connect to Antenna (RF Signal)
3 GND GND Common Ground
4 AUDIO_OUT_PR Analogue Speaker output positive (Right channel)
5 AUDIO_OUT_N- Analogue Speaker output negative (Right channel)
6 AUDIO_OUT_PL Analogue Speaker output positive (Left channel)
7 AUDIO_OUT_NL Analogue Speaker output negative (Left channel)
8 AUDIO_IN_NL- Analogue Microphone & Audio Signal input negative(Left
9 AUDIO_IN_PL Analogue Microphone & Audio Signal input positive (Left
10 AUDIO_IN_PR Analogue Microphone & Audio Signal input positive (Right
11 AUDIO_IN_NR Analogue Microphone & Audio Signal input negative (Right
12 AIO0 Bi-directional ADC/DAC input/output line / 32KHz sleep clock input
13 GND GND Common Ground
14 AIO1 Bi-directional ADC/DAC input/output line, Battery Monitor input
15 AIO3 Bi-directional ADC/DAC input/output line
16 PIO6 Bi-directional Programmable input/output line
17 PIO7/CLK_OUT Bi-directional Programmable I/O line / Programmable clock output
18 PIO5/USB_DETACH Bi-directional Programmable I/O line / Chip detachs from USB
19 PIO4/USB_ON Bi-directional Programmable I/O line / USB wakes BC3 external
20 USBND Bi-directional USB data minus
21 USBDP Bi-directional USB data plus
22 VDD_IN Power VDD_IN
23 GND GND Common Ground
24 UART_RTS CMOS Output UART request to send ,active low
25 UART_CTS CMOS Input UART clear to send ,active low
26 UART_TX CMOS Output UART TX Data
27 UART_RX CMOS Input UART RX Data
28 PCM_IN/SD_IN/SPDIF_IN CMOS Input PCM data input / I2S serial data in
29 PCM_CLK/SCK Bi-directional PCM data clock / I2S serial data clock
30 PCM_SYNC/WS Bi-directional PCM data sync / I2S ws ( typically SCK = 64*WS )
31 PCM_OUT/SD_OUT/SPDIF_OUT CMOS Output PCM data output / I2S serial data out
32 RESET CMOS Input Reset if high. must be high for>5ms to cause a reset
33 SPI_MOSI CMOS Input Serial Peripheral interface data input
34 SPI_CLK CMOS Input Serial Peripheral interface data clock
35 SPI_MISO CMOS Output Serial Peripheral interface data output
36 SPI_CSB CMOS Input Chip select for Synchronous Serial Interface active
37 PIO0 Bi-directional Programmable input/output line
38 PIO1 Bi-directional Programmable input/output line
39 PIO11 Bi-directional Programmable input/output line
40 PIO9 Bi-directional Programmable input/output line
41 PIO10 Bi-directional Programmable input/output line
42 PIO8 Bi-directional Programmable input/output line
43 PIO2 Bi-directional Programmable input/output line
44 PIO3/USB_WAKE_UP Bi-directional Programmable I/O line / Wake up pc in USB mode
45 AUX_DAC Analogue Voltage DAC Output
46 GND GND Common Ground