Harman Kardon AVR 171/230, Service Manual

Page: 111 / 174

Product Specification
Spec-BM840-V1.1 Page 3 of 7 www.sunitec.com.tw
®
Pin Configurations
PIN NO. NAME TYPE FUNCTION RE-MARK
1 GND GND Ground
2 GND GND Ground
3 AIO0 Bi-directional Analogue programmable input / output line
4 PIO12 Bi-directional Programmable Input/Output Line
Alternative function:
■ QSPI_FLASH_CS#: serial quad I/O flash chip select
■ I2C_WP: I²C bus memory write protect line
5 PIO14 Bi-directional Programmable Input/Output Line
Alternative functions:
■ UART_RX: UART data input
6 PIO11 Bi-directional Programmable Input/Output Line
Alternative function:
■ QSPI_IO[0]: serial quad I/O flash data bit 0
■ I2C_SDA: I²C serial data line
7 PIO17 Bi-directional Programmable Input/Output Line
Alternative functions:
■ UART_CTS: UART clear to send, active low
8 PIO10 Bi-directional Programmable Input/Output Line
Alternative function:
■ QSPI_FLASH_CLK: serial quad I/O flash clock
■ I2C_SCL: I²C serial clock line
9 PIO15 Bi-directional Programmable Input/Output Line
Alternative functions:
■ UART_TX: UART data output
10 PIO16 Bi-directional Programmable Input/Output Line
Alternative functions:
■ UART_RTS: UART request to send, active low
11 PIO13 Bi-directional Programmable Input/Output Line
Alternative function:
■ QSPI_IO[1]: serial quad I/O flash data bit 1
12 GND GND Ground
13 PIO2 Bi-directional Programmable Input/Output Line
Alternative functions:
■ SPI_MOSI: SPI data input
■ PCM1_IN: PCM1 synchronous data input
14 PIO5 Bi-directional Programmable Input/Output Line
Alternative functions:
■ SPI_CLK: SPI clock
■ PCM1_CLK: PCM1 synchronous data clock
15 PIO4 Bi-directional Programmable Input/Output Line
Alternative functions:
■ SPI_CS#: chip select for SPI, active low
■ PCM1_SYNC: PCM1 synchronous data sync
16 PIO3 Bi-directional Programmable Input/Output Line
Alternative functions:
■ SPI_MISO: SPI data output
■ PCM1_OUT: PCM1 synchronous data output
17 GND GND Ground
18 LED1 Bi-directional LED driver.
Alternative function: programmable output PIO[30].
19 LED0 Bi-directional LED driver.
Alternative function: programmable output PIO[29].
20 RST# Input with strong
pull-up
Reset if low. Pull low for minimum 5ms to cause a
reset.
21 SPI_PCM# Bidirectional with
weak
pull-down
SPI/PCM select input:
■ 0 = PCM/PIO interface
■ 1 = SPI
22 VREGENABLE CMOS Input Regulator enable input
Can also be sensed as an input.
Regulator enable and multifunction button. A high input
(tolerant to VBAT) enables the on-chip regulators,
which can then be latched on internally and the button
used as a multifunction input
23 GND GND Ground
24 VBUS Power Input Charger input.
Harman Kardon AVR 171 Service Manual
Page 111 of 174