STA2500DTR STMICROELECTRONICS [STMicroelectronics], STA2500DTR Datasheet - Page 46

• Manufacturer Part Number: STA2500DTR
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Digital interfaces
7.4
7.5
Table 29.
46/57
BT_UART_RTS/BT_SPI_CSN
BT_UART_CTS/BT_SPI_CLK
BT_UART_TXD/BT_SPI_DO
BT_UART_RXD/BT_SPI_DI
STA2500D Pin Name
BT_PCM_SYNC
BT_PCM_CLK
BT_PCM_A
The JTAG interface
The JTAG interface is compliant with the JTAG IEEE Standard 1149.1. It allows both the
boundary scan of the digital pins and the debug of the ARM7TDMI application when
connected with the standard ARM7 developments tools. It is also used for the industrial test
of the device. The JTAG interface is available through the following 5 pins: BT_GPIO_8,
BT_GPIO_9, BT_GPIO_10, BT_GPIO_11 and BT_GPIO_16.
Alternate I/O functions
The STA2500D has 10 additional general purpose pins on top of the 4 PCM pins, the 4
UART pins and BT_CLK_REQ_OUT_1 that can also be reconfigured. They are fully
programmable via specific HCI commands. They can be configured as input, output,
interrupt with asynchronous or synchronous edge or level detection and/or wake-up.
The alternative functions are:
●
●
●
●
●
●
●
19 pins can be redefined by SW to perform other functions. Pin BT_HOST_WAKEUP e.g.
can be redefined to perform up to 7 functions, depending on SW settings.
4 exemplary combinations of pin programmings are given in
functions are
●
●
●
●
(The complete list of alternate functions is available upon request).
Examples of BT_GPIO pin programming
Wake-up by the Host in Deep Sleep mode through UART or SPI with handshake (see
Section : Deep sleep mode entry and wake-up through H4 UART or H4 SPI with
handshake)
WLAN coexistence control
I2C interface
PCM synchronization
GPIOs
UART / SPI interface
external driver/LNA control for Class 1 operation.
ex. 1: UART + I2C + Class 1 control
ex. 2: UART + WLAN + Class 1 control
ex. 3: SPI + WLAN + Class 1 control
ex. 4: SPI + WLAN + I
PCM_SYNC
UART_RXD
UART_TXD
UART_CTS
UART_RTS
PCM_CLK
PCM_A
ex. 1
2
C + Class 1 control
Doc ID 16067 Rev 1
PCM_SYNC
UART_RXD
UART_TXD
UART_CTS
UART_RTS
PCM_CLK
PCM_A
ex. 2
PCM_SYNC
PCM_CLK
SPI_CLK
SPI_DO
SPI_CS
PCM_A
SPI_DI
Table
ex. 3
29. The available
PCM_SYNC
PCM_CLK
SPI_CLK
SPI_DO
SPI_CS
PCM_A
SPI_DI
ex. 4
STA2500D