UPD720130 Просмотр технического описания (PDF) - NEC => Renesas Technology
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UPD720130 Datasheet PDF : 44 Pages
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µPD720130
2. FUNCTION INFORMATION
USB to IDE system can be realized by the µPD720130, Serial ROM which has USB vender ID, product ID, etc,
and power control circuit. The µPD720130 can be selected bus powered mode or self powered mode. If all power
consumption for USB to IDE system is less than the specification of bus powered device, it will be possible to realize
high-speed capable bus powered system. The µPD720130 has some features for bus powered system. Also, some
system may control target IDE device by two IDE controllers. At the time, IDE bus arbitration should be required to
each IDE controller. The µPD720130 has a feature of IDE bus arbitration, too.
The setting of IDE controller in the µPD720130 is controlled by data in serial ROM or external pin setting. If there
is any inconsistency between data in serial ROM and external pin setting, the data in serial ROM is higher priority than
external pin setting.
2.1 Data in Serial ROM
The µPD720130 loads some data such as Vendor ID, Product ID and some additional USB related information,
etc from serial ROM when the µPD720130 is initialized. Example of data in serial ROM is as follows. ExPinReset
and ExPinSet fields hold data which is related to the external pin setting.
Data size
1 Word
1 Byte
1 Byte
1 Word
1 Word
1 Word
1 Byte
1 Byte
1 Byte
1 Byte
1 Byte
1 Word
1 Word
32 Bytes
32 Bytes
32 Bytes
Table 2-1. Data in Serial ROM
Symbol
Flags
ExPinReset
ExPinSet
idVendor
idProduct
bcdDevice
MaxPower BUS
MaxPower Self
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
TxMode Reset
TxMode Set
ManufactureString
ProductString
SerialString
Description
Control for descriptor overwrite
PWR, CLC, DCC, DV[1:0] Reset bit map field
PWR, CLC, DCC, DV[1:0] Set bit map field
idVendor field in Device descriptor
idProduct field in Device descriptor
bcdDevice field in Device descriptor
MaxPower field in Configuration descriptor for Bus powered mode
MaxPower field in Configuration descriptor for Self powered mode
bInterfaceClass field in Interface descriptor
bInterfaceSubClass field in Interface descriptor
bInterfaceProtocol field in Interface descriptor
IDE transmission type such as Ultra DMA 66 Reset bit map field
IDE transmission type such as Ultra DMA 66 Set bit map field
String descriptor for Manufacturer
String descriptor for Product
String descriptor for Device serial number
Data Sheet S16302EJ3V0DS
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