User's Manual

12/14/2008 EDSCE
C O N F I D E N T I A L F O R A M T R A N T E C H N O L O G Y C O R P O R A T I O N
User Manual BCM92046MD_EMB
12/05/08
Broadcom Corporation
Document 92046MD-UM100-R Application Code Page 5
MODULE PINOUT DESCRIPTION
Table 1 shows the BCM92046MD_EMB pinout description.
APPLICATION CODE
Application code resides in the on-module EEPROM. During power-on reset, the application code must be
downloaded to BCM2046 RAM before the board performs any Bluetooth activity.
Application code can also be patched directly to BCM2046 RAM from the host during power-on reset without
an external EEPROM.
The 2046 on-chip serial port can be used to download application code from a host computer file to EEPROM
or on-chip RAM using either the UART or USB transport mechanisms.
Table 1: Pinout Description
Pin Pin Name I/O Description
1, 2, 3, 5, 13, 18, 23, 26, 27, 28, 29,
30, 31
GND Power System ground
4 3.3V Power 3.3V power supply to the module
6 VREG_CTL Input Pre-regulator and VREG1 enable/disable control
7 RST_N Input Active low system reset
8 GPIO_0 Input/
Output
GPIO
9 GPIO_2 Input/
Output
GPIO
10 GPIO_1 Input/
Output
GPIO
11 SCL Input/
Output
Broadcom serial control clock (I
2
C compatible)
12 SDA Input/
Output
Broadcom serial data (I
2
C compatible)
14 UART_RXD Input UART serial input
15 UART_TXD Output UART serial output
16 UART_RTS Output UART request to send
17 UART_CTS Input UART clear to send
19 GPIO_3 Input/
Output
GPIO
20 GPIO_4 Input/
Output
GPIO
21 GPIO_6 Input/
Output
GPIO
22 GPIO_5 Input/
Output
GPIO
24 USB_DN Input/
Output
Downstream USB differential data
25 USB_DP Input/
Output
Downstream USB differential data