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PRELIMINARY
Document #: 38-08037 Rev. *D Page 2 of 23
3.0 Block Diagrams
Figure 3-1. CY7C65640B Block Diagram
Routing Logic
Hub Repeater
USB Upstream Port
USB 2.0 PHY
PLL
Serial
Interface
Engine
High-Speed
USB Control Logic
SPI Communication
Block
USB Downstream Port 1
USB 2.0
PHY
Port Power
Control
Port
Status
USB Downstream Port 2
USB 2.0
PHY
Port Power
Control
Port
Status
USB Downstream Port 3
USB 2.0
PHY
Port Power
Control
Port
Status
USB Downstream Port 4
USB 2.0
PHY
Port Power
Control
Port
Status
SPI_SCK
SPI_CS
SPI_SD
D+ D- PWR#[4]
OVR#[4]
LEDD+ D- PWR#[3]
OVR#[3]
LEDD+ D- PWR#[2]
OVR#[2]
LEDD+ D- PWR#[1]
OVR#[1]
LED
Transaction Translator (X4)
TT RAM
D+ D -
24
MHz
Crystal