ISD-300A1 Cypress Semiconductor Corp, ISD-300A1 Datasheet - Page 61

• Manufacturer Part Number: ISD-300A1
• Description: IC USB 2.0 BRIDGE BULK 100LQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of ISD-300A1

• Applications: USB 2.0 to ATA/ATAPI Bridge
• Interface: ATA, ATAPI
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 100-LQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1459

October 19, 2001
Address
0xD
0xE
0xF
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
PIO Mode Selection
Skip Pin Reset
General Purpose IO
General Purpose IO 3-state
control
General Purpose IO
General Purpose IO 3-state
control
bLength
bDescriptor Type
bcdUSB (LSB)
bcdUSB (MSB)
bDeviceClass
bDeviceSubClass
bDeviceProtocol
bMaxPacketSize0
idVendor (LSB)
idVendor (MSB)
idProduct (LSB)
idProduct (MSB)
bcdDevice (LSB)
bcdDevice (MSB)
iManufacturer
Field Name
Bits (7:5)
PIO Mode Selection. The PIO mode reported back to the device if the
Override PIO Timing configuration bit is set. This field represents the PIO
mode of operation configured by the ATA Data Setup, ATA Data
Assertion, ATA Data Recover, and Override PIO Timing fields.
mode 0
mode 1
mode 2
mode 3
mode 4
Bit (4)
Skip ATA_NRESET assertion. Note: SRST Enable must be set in
conjunction with Skip Pin Reset. Setting this bit causes the Initialize
algorithm to bypass ATA_NRESET assertion unless a drive Power On
Reset cycle occurred, utilizing SRST as the drive reset mechanism.
.
0
1
Bits (3:2)
GPIO[9:8] input / output control
Writing this register controls the output state of the GPIO pin (if the 3-state
control is enabled)
Reading this register returns the logic value from the GPIO pin
Bits (1:0)
GPIO[9:8] 3-state control
0
1
Bits(7:0)
GPIO[7:0] input / output control
Writing this register controls the output state of the GPIO pin (if the 3-state
control is enabled)
Reading this register returns the logic value from the GPIO pin
Bits(7:0)
GPIO[7:0] 3-state control
0
1
Length of device descriptor in bytes.
Descriptor type.
USB Specification release number in BCD.
Device class.
Device subclass.
Device protocol.
Maximum USB packet size supported
Vendor ID.
Product ID.
Device release number in BCD lsb (product release number)
Device release number in BCD msb (silicon release number). NOTE: This
field entry is always returned from internal ROM contents, regardless of
the descriptor source.
Index to manufacturer string. This entry must equal half of the address
value where the string starts or 0 if the string does not exist.
Output enabled (GPIO pin is an output)
3-state (hi-Z) (GPIO pin is an input)
Output enabled (GPIO pin is an output)
3-state (hi-Z) (GPIO pin is an input)
Allow ATA_NRESET assertion
Disable ATA_NRESET assertion
000
001
010
011
100
USB Device Descriptor
56
Description
ISD-300A1
Example
SROM
0xAB
Data
0xFF
0x23
0x00
0x12
0x01
0x00
0x02
0x00
0x00
0x00
0x40
0x05
0x60
0x00
0x00
0x10
0x49