SL811HST Cypress Semiconductor Corp, SL811HST Datasheet - Page 7

• Manufacturer Part Number: SL811HST
• Manufacturer: Cypress Semiconductor Corp

Specifications of SL811HST

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Package Type: PLCC
• Rad Hardened: No
• Lead Free Status / Rohs Status: Not Compliant

3.1.2.6 USB-A/USB-B Host Transfer Count Register (Read), USB Address (Write) [Address = 04h, 0Ch]
This register has two different functions depending on if it is read or written. When READ, this register contains the number of
bytes left over (from Host Base Length value) after a packet is transferred. For example, if the Base Length Register was set to
0x040 and an IN Token was sent to the peripheral device. If, after the transfer was complete, the value of the Host Transfer Count
was 0x10, the number of bytes actually transferred would be 0x30. This is can be thought of as an underflow indication.
Table 3-8. USB-A / USB-B Host Transfer Count Register when READ [Address 04h, 0Ch]
When WRITTEN, this register will contain the USB Device Address to which the Host wishes to communicate
Table 3-9. USB-A / USB-B USB Address when WRITTEN [Address 04h, 0Ch]
DA6-DA0
DA7
3.1.3
The next set of registers are the control registers and control more of the overall operation of the chip instead of USB packet
types of transfers. Note in the following table the SL11H and SL811H are differentiated mainly due to the fact that register 0FH
was not valid in the SL11H but is left here for users who are familiar with the SL11H.
Table 3-10. SL811HS Control Registers Summary
Document 38-08008 Rev. *B
Control Register 1
Interrupt Enable Register
Reserved Register
Status Register
SOF Counter LOW (Write)/HW Revision Register (Read)
SOF Counter HIGH and Control Register 2
Memory Buffer
HTC7
Bit 7
Bit 7
0
SL811HS Control Registers
Register Name SL11H and SL811H
Device address, up to 127 devices can be addressed
Reserved bit should be set zero.
HTC6
Bit 6
Bit 6
DA6
HTC5
Bit 5
Bit 5
DA5
HTC4
Bit 4
Bit 4
DA4
SL11H (hex) Address
HTC3
Bit 3
DA3
Bit3
Reserved
10h-FFh
0Dh
0Eh
05h
06h
07h
HTC2
Bit 2
Bit 2
DA2
SL811HS (hex) Address
HTC1
Bit 1
Bit 1
DA1
10h-FFh
0Dh
0Eh
0Fh
05h
06h
07h
SL811HS
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HTC0
Bit 0
Bit 0
DA0
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