Motorola CPCI-6115 Safe Start Header, Bus Mode Select Header, Srom Initialization Enable Header

Safe Start Header Controls, LEDs, and Connectors

3.5.14Safe Start Header

A 3-pin 2 mm header is located on the board to select programmed or safe start ENV settings. No jumper or a jumper between pins 1 and 2 indicates that the programmed (e.g., VPD, SPD) settings should be used during boot. A jumper between pins 2 and 3 indicates that the safe start settings should be used. The pin assignments for this header are as follows:

Table 3-16 Safe Start ENV Header Pin Assignments, J20

Pin	Signal	Function
1	GND	1-2 for ENV parameters
2	SAFE_START
3	+3.3 V	2-3 for SAFE start

3.5.15Bus Mode Select Header

A 3-pin 2 mm header is located on the board to select the processor bus operating mode. No jumper or a jumper from pins 1 to 2 selects the 60x bus mode while a jumper between pins 2 and 3 selects the MPX bus mode. The pin assignments for this header are as follows:

Table 3-17 Bus Mode Select Header Pin Assignments, J6

Pin	Signal	Function
1	GND	1-2 for 60x mode
2	BMODE_SEL
3	+3.3 V	2-3 for MPX mode

3.5.16SROM Initialization Enable Header

A 3-pin 2 mm header is located on the board to enable/disable the MV64360 SROM initialization. A jumper from pins 1 to 2 enables the MV64360 device initialization via I2C SROM while no jumper or a jumper between pins 2 and 3 will disable this initialization sequence. The pin assignments for this header are as follows:

Table 3-18 SROM Initialization Enable Header Pin Assignments, J25

Pin	Signal	Function
1	+3.3 V	1-2 for I2C Init
2	SROM_INIT
3	GND	2-3 for No I2C Init

CPCI-6115 CompactPCI Single Board Computer Installation and Use (6806800A68D) 65