Specifications

C
Connector Pinouts and Jumper Settings
152
Jumper settings
Figure 20showsthephysicallocationofthestrappingheader,andTable 48describesthe
effectofjumperingeachpairofpins.
Figure 20. Strapping header
Table 48. Jumpering pin pairs
Pin pair Effect if pins are jumpered
1 and 2 Write protects the BIOS boot block. Power down the CPM before removing the jumper.
3 and 4 Write protects USB flash drive 2 (top)
5 and 6 Write protects USB flash drive 1 (bottom)
7 and 8 Reserved for internal use only (Include the AMC in the JTAG chain)
9 and 10 Clears BIOS NVRAM contents during the next POST
11 and 12 Reserved for internal use only (RTCRST asserted)
13 and 14 Forces BIOS recovery mode during boot
15 and 16 Reserved for internal use only (Disable all watchdogs)
17 and 18 Reserved for internal use only (IPMC kill enable)
19 and 20 Reserved for internal use only (Shelf Manager enable - reserved for future use)