HC4GX15 Datasheet, PDF (58/668 Pages) Altera Corporation – HardCopy IV Device Handbook

6–8
Chapter 6: HardCopy IV Device I/O Features
HardCopy IV I/O Banks
Every I/O bank in HardCopy IV devices can support high-performance external
memory interfaces with dedicated circuitry. The I/O pins are organized in pairs to
support differential standards. Each I/O pin pair can support both differential input
and output buffers. The only exceptions are the clk1, clk3, clk8, clk10,
PLL_L1_clk, PLL_L4_clk, PLL_R1_clk, and PLL_R4_clk pins which support
differential input operations only.
f For more information about the number of channels available for the LVDS I/O
standard, refer to the High-Speed Differential I/O Interface with DPA in HardCopy IV
Devices chapter.
HardCopy IV I/O Banks
The I/O pins in HardCopy IV devices are arranged in groups called modular I/O
banks. Depending on the device package, the number of I/O banks varies. The size of
each bank can also vary. Table 6–3 lists the I/O count per bank for all available pin
packages.
Table 6–3. HardCopy IV E I/O Count per Bank (Note 1) (Part 1 of 2)
Device Package Pin Count
Bank
484
1A
24
1C
24
2A
24
2C
24
3A
—
3B
—
3C
24
4A
—
4B
—
4C
24
5A
24
5C
24
6A
24
6C
24
7A
—
7B
—
7C
24
8A
—
8B
—
8C
24
Total Bank
12
780
1152
32
48
26
42
32
48
26
42
40
40
—
24
24
32
40
40
—
24
24
32
32
48
26
42
32
48
26
42
40
40
—
24
24
32
40
40
—
24
24
32
16
20
1517
50
42
50
42
48
48
32
48
48
32
50
42
50
42
48
48
32
48
48
32
20
HardCopy IV Device Handbook, Volume 1
© January 2010 Altera Corporation