Product Principle 4-13
4.3.4.4 PCIE Interface Distribution plans
The data and controls of ultrasound devices are based on PCIE interface.
The structure of PCIE interface distribution of the system is shown in table 1
Table 1 PCIE distribution
PCIE interface on CPU
module
Device Transport speed
LANE [3:0]
Engine board on
front-end
PCIE Gen 2, 5Gbps，
Form x4
LANE [4]
back-end
PCIE Gen 1, 2.5Gbps
4.3.4.5 SATA Interface Function Requirements and Plan
SATA interface is applied for connecting memory device; detail distribution is shown in table 2:
Table 2 SATA interface distribution
CPU module
board
Port 3 Hard Disk WTB connect, SATA 2.0
4.3.4.6 Audio Interface Function Requirements and Plan
The audio interface is applied for connecting speaker, microphone, earphone and other devices, so
back-end must support speaker output, microphone input, general audio output (speaker and
earphone).
The load index of speaker: the speakers on the device support dual tracks of 10W/8Ω for
earphone and speaker, it supports dual output only.
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