CY7C67300-100AXA Cypress Semiconductor Corp, CY7C67300-100AXA Datasheet - Page 70

• Manufacturer Part Number: CY7C67300-100AXA
• Description: IC,Peripheral (Multifunction) Controller,QFP,100PIN
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-Host™r

Specifications of CY7C67300-100AXA

• Applications: USB Host/Peripheral Controller
• Core Processor: CY16
• Program Memory Type: ROM (8 kB)
• Controller Series: CY7C673xx
• Ram Size: 16K x 8
• Interface: SPI Serial, USB, HPI
• Number Of I /o: 32
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: CY4640 - KIT MASS STORAGE REF DESIGNCY3663 - KIT DEV EZ-OTG/EZ-HOST
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Document #: 38-08015 Rev. *G
Table 46.CRC Mode Definition
CRC Enable (Bit 13)
The CRC Enable bit enables or disables the CRC operation.
1: Enables CRC operation
0: Disables CRC operation
CRC Clear (Bit 12)
The CRC Clear bit clears the CRC with a load of all ones. This
bit is self clearing and always reads ‘0’.
1: Clear CRC with all ones
0: No Function
Receive CRC (Bit 11)
The Receive CRC bit determines whether the receive bit
stream or the transmit bit stream is used for the CRC data input
in full duplex mode. This bit is a don’t care in half duplex mode.
1: Assigns the receive bit stream
0: Assigns the transmit bit stream
SPI CRC Value Register [0xC0D4] [R/W]
Register Description
The SPI CRC Value Register contains the CRC value.
CRC (Bits [15:0])
The CRC field contains the SPI CRC. In CRC Mode CRC7, the CRC value will be a seven bit value [6:0]. Therefore bits [15:7]
are invalid in CRC7 mode.
Bit #
Field
Read/Write
Default
Bit #
Field
Read/Write
Default
CRCMode [15:14]
00
01
10
11
R/W
R/W
15
1
7
1
MMC 16-bit: X^16 + X^12 + X^5 + 1(CCITT Standard)
CRC7 7-bit: X^7+ X^3 + 1
MST 16-bit: X^16+ X^15 + X^2 + 1
Reserved, 16-bit polynomial 1
R/W
R/W
14
1
6
1
Figure 77. SPI CRC Value Register
R/W
R/W
13
1
5
1
R/W
R/W
12
1
4
1
One in CRC (Bit 10)
The One in CRC bit is a read-only bit that indicates if the CRC
value is all zeros or not
1: CRC value is not all zeros
0: CRC value is all zeros
Zero in CRC (Bit 9)
The Zero in CRC bit is a read-only bit that indicates if the CRC
value is all ones or not
1: CRC value is not all ones
0: CRC value is all ones
Reserved
All reserved bits should be written as ‘0’.
CRC Polynomial
CRC...
...CRC
R/W
R/W
11
1
3
1
R/W
R/W
10
1
2
1
R/W
R/W
9
1
1
1
CY7C67300
Page 70 of 98
R/W
R/W
8
1
0
1
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