Tegra 200 Series Developer Board User Guide

4.9.4 Strapping Pins

Straps must be stable from the rising edge of SYS_RESET_N until 12.5us afterward.

Figure 26. Power-on Strapping Connections

Table 14. Power-on Strapping Breakdown

Strap Options

Strap Pins

Description

USB_RECOVERY

GMI_OE_N

0: USB Recovery Mode

 

 

1: Boot from secondary device

 

 

 

JTAG_ARM[1:0]

GMI_CLK, GMI_ADV_N

00: Serial JTAG chain, MPCORE and AVP

 

 

 

RAM_CODE[3:0]

GMI_AD[7:4]

SW uses to determine which BCT table to use for DRAM, NAND timing

 

 

 

BOOT_SELECT_CODE[3:0]

GMI_AD[15:12]

Selects Boot device - depends on how Boot fuses are burned

 

 

 

DG-04927-001_v01

Advance Information – Subject to Change

37

 

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