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3-Feb-2015
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2.8 Expansion Headers
2.8.1
Micro Headers
PicoZed 7010/7020 features three 100-pin Micro Headers (FCI, 61082-101400LF) for connection
to expansion cards.
The JX1 and JX2 connectors interface PL, PS I/O to the expansion card as well as two dedicated
analog inputs, the four dedicated JTAG signals, power and control signals. The JX3 connector
interfaces to peripheral interfaces such as Ethernet, USB 2.0, 10 Bank 13 PL I/O (Zynq 7020
devices), and 12 Zynq PS MIO.
The connectors are FCI 0.8mm Bergstak®, 100 Position, Dual Row, BTB Vertical Receptacles.
These have variable stack heights from 5mm to 16mm, making it easy to connect to a variety of
expansion or system boards. Each pin can carry 500mA of current and support I/O speeds in
excess of what Zynq can achieve.
PicoZed 7010/7020 does not power the PL VCCIO
banks. This is required to be provided by the
carrier card. This gives the carrier card the flexibility to control the I/O bank voltages. Separate
routes/planes are used for VCCO_34 and VCCO_35 such that the carrier card could potentially
power these independently. The PicoZed 7010 has two PL I/O banks. Banks 34 and 35 each
contain 50 I/O. The PicoZed 7020 contains a third PL I/O bank. Bank 13 is fully connected (25
I/O) on the PicoZed 7020
. Bank 13’s power has an independent rail, VCCO_13, which is
powered from the carrier card as well.
Within a PL I/O Bank 34 or Bank 35, there are 50 I/O capable of up to 24 differential pairs per
bank. Differential LVDS pairs on a -1 speed grade device are capable of 950Mbps of DDR data.
Each differential pair from Bank 34 and 35 is isolated by a power or ground pin. Additionally,
eight of these I/O can be connected as clock inputs (four MRCC and four SRCC inputs). Each PL
bank can also be configured to be a memory interface with up to four dedicated DQS data
strobes and data byte groups. Bank 35 adds the capability to use the I/O to interface up to 16
differential analog inputs. One of the differential pairs (JX1_LVDS_2_P) in Bank 34 is shared with
PUDC_B.