Cypress EZ-USB CX3 - Page 3

Cypress EZ-USB CX3
EZ-USB® CX3 Technical Reference Manual, Doc. No. 001-91492 Rev. *B 3
functional blocks, such as the CPU Subsystem, Memory, Global Controller, DMA, USB, and low-bandwidth
(serial and GPIO) peripherals are available in the EZ-USB FX3 TRM. Technical terms used in this TRM are
defined in the Glossary.
Figure 2 is the block diagram of FX3. Certain functional blocks are not included in CX3; these are shown in
red. The GPIF II, shown in blue, is included in CX3, but only with functionality specific to the camera interface.
Figure 2: FX3 Block Diagram
UART SPI I
2
S
I
2
C
GPIF II
32
EPs
HS/FS/LS
OTG Host
SS
Peripheral
HS/FS
Peripheral
Charger
Detection
(EZ-Dtect™)
USB Interface
ARM926EJ-S
JTAG
System
RAM
I
2
C_SDA
I
2
C_SCL
D+
D-
SSTX+
SSTX-
SSRX+
SSRX-
OTG_ID
FX3 BLOCK DIAGRAM
Memory
Controller
GPIOs
Not Available in CX3
Limited Functionality in CX3
Available in CX3
Figure 3 shows the CX3 block diagram, including the added MIPI CSI-2 functional block and the fixed-function
GPIF II interface available in CX3, highlighted in green.
Figure 3: CX3 Block Diagram
UART SPI I
2
S
I
2
C
Fixed
Function
GPIF II
32
EPs
SS
Peripheral
HS/FS
Peripheral
USB Interface
ARM926EJ-S
JTAG
System
RAM
D+
D-
SSTX+
SSTX-
SSRX+
SSRX-
CX3 BLOCK DIAGRAM
Memory
Controller
MIPI
CSI-2
Receiver
Block
I
2
C_SDA
I
2
C_SCL
MIPI
CSI2
Input
Image
Sensor
USB
Host
MCLK
XRESET
XSHUTDO WN
GPIOs
New Functionality in CX3