User guide

Using the System
29
ENET_DATA[12] PIN_B19 DM9000A DATA[12]
ENET_DATA[13] PIN_A19 DM9000A DATA[13]
ENET_DATA[14] PIN_E18 DM9000A DATA[14]
ENET_DATA[15] PIN_D18 DM9000A DATA[15]
ENET_CLK PIN_B24 DM9000A Clock 25 MHz
ENET_CMD PIN_A21 DM9000A Command/Data Select, 0 = Command, 1 = Data
ENET_CS_N PIN_A23 DM9000A Chip Select
ENET_INT PIN_B21 DM9000A Interrupt
ENET_RD_N PIN_A22 DM9000A Read
ENET_WR_N PIN_B22 DM9000A Write
ENET_RST_N PIN_B23 DM9000A Reset
Table 3.11 Pin Assignment for Fast Ethetnet
3-12 Using TV Decoder
The DE2 Board is equipped with ADV7181 as its TV Decoder chip. The ADV7181
is integrated video decoder automatically detects and converts a standard analog
baseband televison signal-compatible with worldwide standards NTSC, PAL, and
SECAM into 4:2:2 component video data-compatible with 16-bit/8-bit
CCIR601/CCIR656.
The highly flexible digital output interface enables performance video decoding
and conversion in line-locked clock-based systems. This makes the device ideally
suited for a broad range of applications with diverse analog video characteristics,
including tape-based sources, broadcast sources, security/surveillance cameras,
and professional systems.
All the registers in this TV Decoder can be programmed by I2C bus. Figure 3.14
shows the schematics of the TV decoder circuits. The pin assignment of the
associated interface is shown in Table 3.12.