Altera Santa Cruz - Manual (Page 14)

2–8 Chapter 2: Board Components
Santa Cruz Connectors (J3, J4, and J5)
Santa Cruz, USB, MICTOR, SD Card HSMC Reference Manual © December 2008 Altera Corporation
Figure 2–8. Logic Level Transform Block
Table 2–3. Logic Level Configuration on HSPROTO_IO Bus
JP3 Setting Logic Level of the HSPROTO_IO Bus
Open 2.5 V
Close 3.3 V
Table 2–4. Logic Level Configuration on PROTO_IO Bus
JP4 Setting Logic Level of the PROTO_IO Bus
Open 3.3 V
Close 2.5 V
Santa Cruz
Connectors
(J3-J5)
Level
Shifters
(U3-U8)
42
PROTO_RESET
PROTO_CARDSEL
PROTO_IO[39..0]
42
HSPROTO_RESET
HSPROTO_CARDSEL
HSPROTO_IO[39..0]
HSMC Connector
(J1)
VCCA
Open: 2.5 V
Close: 3.3 V
VCCB
Open: 3.3 V
Close: 5 V
JP3 JP4