User Manual

Table Of Contents
Connector specifications
5-10 Confidential - For internal use 99-137719-D
5.5.3 Board-to-Board connector
The pin numbers listed in the Table 5-5 below are defined by Figure 5-7. Electrical
characteristics for the signal types are listed in Table 5-8 and Table 5-9.
There are multiple supply grounds. All supply and supply grounds must be connected.
Optional RF
connectors
Rx2 One Tyco spring-loaded B2B coaxial connector
Tyco part number: 619135-1
Ref CLK One Tyco spring-loaded B2B coaxial connector
Tyco part number: 619135-1
Connector for
BGAN XL Radio
Module
development only
(for internal use)
Debug Connector One 40-pin Samtec LSHM series B2B connector
Samtec part number: LSHM-120-04.0-x-DV-A-N
Connector
classification
Reference Description
Table 5-4: Connector types and specifications (Continued)
Signal Description I/O Electrical Pin #
Control Interface
UART_RxD Received Serial Data In 3.3V TTL 9B
UART_TxD Transmitted Serial Data Out 3.3V TTL 7B
UART_RTS Request-to-send Out 3.3V TTL 8B
UART_CTS Clear-to-send In 3.3V TTL 10B
Irq_In Input Interrupt / Startup in
boot loader
In 3.3V TTL 12B
Irq_Out Output Interrupt Out 3.3V TTL 11B
Rst_In Reset In 3.3V TTL
a
15B
Digital Reference Clock Output for synchronization of ext. clock-domains
Ref_CLK Reference Clock, 57.85 MHz Out 3.3V TTL 17B
RF Control Interface
SPI_CLK Clock Out 3.3V TTL 27A
SPI _MOSI Master Output, Slave Input Out 3.3V TTL 28A
SPI _MISO Master Input, Slave Output In 3.3V TTL 29B
SPI _LE Latch Enable/ Slave Select Out 3.3V TTL 29A
Tx_Sync Tx Burst Sync Pulse Out 3.3V TTL 19B
Tx_Ack Tx Acknowledge In 3.3V TTL 21B
Table 5-5: B2B connector — pin allocation