Specifications

Chapter 2: Board Components 2–43
Communication Ports and Interfaces
© March 2009 Altera Corporation Cyclone III 3C120 Development Board Reference Manual
1 As noted in the HSMC specification, LVDS and single-ended I/O standards are only
guaranteed to function when mixed according to either the generic single-ended
pin-out or the generic differential pin-out.
Ta bl e 2–47 lists the HSMC Port A interface signal name, description, and I/O
standard. Signal name and direction are relative to the Cyclone III FPGA, which is the
HSMC host.
Table 2–47. HSMC Port A Interface Signal Name, Description, and Type (Part 1 of 3)
Board
Reference Description I/O Standard
Schematic
Signal Name
Cyclone III
Device Pin
Number
J8 pin 33 Management serial data 2.5 V HSMA_SDA AC1
J8 pin 34 Management serial clock 2.5 V HSMA_SCL AC3
J8 pin 35 JTAG clock signal 2.5 V FPGA_JTAG_TCK P5
J8 pin 36 JTAG mode select signal 2.5 V FPGA_JTAG_TMS P8
J8 pin 39 Dedicated CMOS clock out 2.5 V HSMA_CLK_OUT0 Y7
J8 pin 40 Dedicated CMOS clock in 1.8 V HSMA_CLK_IN0 AG14
J8 pin 41 Dedicated CMOS I/O bit 0 2.5 V HSMA_D0 AB6
J8 pin 42 Dedicated CMOS I/O bit 1 2.5 V HSMA_D1 AF2
J8 pin 43 Dedicated CMOS I/O bit 2 2.5 V HSMA_D2 AE3
J8 pin 44 Dedicated CMOS I/O bit 3 2.5 V HSMA_D3 AC5
J8 pin 47 LVDS TX or CMOS I/O bit 0 LVDS or 2.5 V HSMA_TX_D_P0 R7
J8 pin 48 LVDS RX or CMOS I/O bit 0 LVDS or 2.5 V HSMA_RX_D_P0 AB2
J8 pin 49 LVDS TX or CMOS I/O bit 0 LVDS or 2.5 V HSMA_TX_D_N0 R6
J8 pin 50 LVDS RX or CMOS I/O bit 0 LVDS or 2.5 V HSMA_RX_D_N0 AB1
J8 pin 53 LVDS TX bit 1p or CMOS I/O data 8 LVDS or 2.5 V HSMA_TX_D_P1 V4
J8 pin 54 LVDS RX bit 1p or CMOS I/O data 9 LVDS or 2.5 V HSMA_RX_D_P1 Y4
J8 pin 55 LVDS TX bit 1n or CMOS I/O data bit 10 LVDS or 2.5 V HSMA_TX_D_N1 V3
J8 pin 56 LVDS RX bit 1n or CMOS I/O data bit 11 LVDS or 2.5 V HSMA_RX_D_N1 Y3
J8 pin 59 LVDS TX bit 2p or CMOS I/O data bit 12 LVDS or 2.5 V HSMA_TX_D_P2 T4
J8 pin 60 LVDS RX bit 2p or CMOS I/O data bit 13 LVDS or 2.5 V HSMA_RX_D_P2 U3
J8 pin 61 LVDS TX bit 2n or CMOS I/O data bit 14 LVDS or 2.5 V HSMA_TX_D_N2 T3
J8 pin 62 LVDS RX bit 2n or CMOS I/O data bit 15 LVDS or 2.5 V HSMA_RX_D_N2 U4
J8 pin 65 LVDS TX bit 3p or CMOS I/O data bit 16 LVDS or 2.5 V HSMA_TX_D_P3 R3
J8 pin 66 LVDS RX bit 3p or CMOS I/O data bit 17 LVDS or 2.5 V HSMA_RX_D_P3 W2
J8 pin 67 LVDS TX bit 3n or CMOS I/O data bit 18 LVDS or 2.5 V HSMA_TX_D_N3 R4
J8 pin 68 LVDS RX bit 3n or CMOS I/O data bit 19 LVDS or 2.5 V HSMA_RX_D_N3 W1
J8 pin 71 LVDS TX bit 4p or CMOS I/O data bit 20 LVDS or 2.5 V HSMA_TX_D_P4 M8
J8 pin 72 LVDS RX bit 4p or CMOS I/O data bit 21 LVDS or 2.5 V HSMA_RX_D_P4 V2
J8 pin 73 LVDS TX or 4n CMOS I/O data bit 22 LVDS or 2.5 V HSMA_TX_D_N4 M7
J8 pin 74 LVDS RX 4n or CMOS I/O data bit 23 LVDS or 2.5 V HSMA_RX_D_N4 V1
J8 pin 77 LVDS TX 5p or CMOS I/O data bit 24 LVDS or 2.5 V HSMA_TX_D_P5 P2
J8 pin 78 LVDS RX 5p or CMOS I/O data bit 25 LVDS or 2.5 V HSMA_RX_D_P5 U2