CY7C68300C-56PVXC Cypress Semiconductor Corp, CY7C68300C-56PVXC Datasheet - Page 34

• Manufacturer Part Number: CY7C68300C-56PVXC
• Description: IC USB 2.0 BRIDGE AT2LP 56-SSOP
• Manufacturer: Cypress Semiconductor Corp
• Series: CY7Cr
• Type: USB to ATA/ATAPI Bridger

Specifications of CY7C68300C-56PVXC

• Package / Case: 56-SSOP
• Controller Type: USB 2.0 Controller
• Interface: I²C
• Voltage - Supply: 3.15 V ~ 3.45 V
• Current - Supply: 50mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Number Of Bits: 48
• Operating Temperature Range: 0 C to + 70 C
• Supply Current: 10 mA
• Operating Supply Voltage: 3.3 V
• Controller Family/series: (8051) USB
• Core Size: 8 Bit
• No. Of I/o's: 6
• Embedded Interface Type: I2C, USB
• Digital Ic Case Style: SSOP
• Supply Voltage Range: 3V To 3.6V
• Rohs Compliant: Yes
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Package Type: SSOP
• Rad Hardened: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: CY4615B - KIT USB TO ATA REFERENCE DESIGN
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 428-2266-5; CY7C68300C-56PVXC

Programming the EEPROM
There are three methods of programming the EEPROM:
■
■
■
Any vendor-specific USB write request to the Serial ROM device
configuration space simultaneously update internal configuration
register values as well. If the I
vendor specific USB commands, the AT2LP must be synchro-
nously reset (toggle RESET#) before configuration data is
reloaded.
The AT2LP supports a subset of the ’slow mode’ specification
(100 KHz) required for 24LCXXB EEPROM family device
support. Features such as ’Multi-Master,’ ’Clock Synchroni-
zation’ (the SCL pin is output only), ’10-bit addressing,’ and
’CBUS device support’ are not supported. Vendor-specific USB
commands enable the AT2LP to address up to 256 bytes of
EEPROM data.
Table 12. EEPROM-related Vendor-specific Commands
READ_CONFIG_DATA
This USB request enables data retrieval from the data source specified by the wValue field. Data is retrieved beginning at the address
specified by the wIndex field (see
Legal values for wValue are as follows:
■
■
Illegal values for wValue result in an undefined operation. Attempted reads from an I
in an undefined operation. Attempts to read configuration bytes with starting addresses greater than 0xF also, result in an undefined
operation.
Document 001-05809 Rev. *B
LOAD_CONFIG_DATA
READ_CONFIG_DATA
Stand-alone EEPROM programmer
Vendor-specific USB commands, listed in
In-system programming (for example, bed-of-nails tester)
0x0000
0x0002
Label
Configuration bytes, addresses 0x0 – 0xF only
External I
2
C memory device
bmRequestType bRequest
2
C device is programmed without
0xC0
0x40
Table
12). The wLength field denotes the length in bytes of data requested from the data source.
Table 12
0x01
0x02
Data Source
wValue
0x0000
LOAD_CONFIG_DATA
This request enables writes to the AT2LP’s configuration data
space. The wIndex field specifies the starting address and the
wLength field denotes the data length in bytes.
Legal values for wValue are as follows:
■
■
Internal Config byte writes must be constrained to addresses 0x2
through 0xF, as shown in
address space result in undefined operation. Internal Config byte
writes only overwrite AT2LP Configuration Byte registers, the
original data source (I
0x0000 Internal Config bytes, address range 0x2 – 0xF
0x0002 External I
Starting Address Data Length
30x02 – 0x0F
wIndex
2
C memory device when none is connected result
CY7C68300C, CY7C68301C
CY7C68320C, CY7C68321C
2
C memory device
2
C memory device) remains unchanged.
Table
Data Length
wLength
12. Attempts to write outside this
Configuration
Configuration
Data
Data
Data
Page 34 of 42
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