Nvidia DG-04927-001_V01 Manuel D’Utilisation

Page de 41
Tegra 200 Series Developer Board User Guide
 
DG-04927-001_v01
 
Advance Information – Subject to Change 
37
 
 
NVIDIA CONFIDENTIAL
 
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