SL811HST Cypress Semiconductor Corp, SL811HST Datasheet - Page 6

• 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

3.1.2.4 USB-A/USB-B Host Base Length [Address = 02h, 0Ah]
Table 3-5. USB-A / USB-B Host Base Length Definition [Address 02h, 0Ah]
The USB A/B Host Base Length register contains the maximum packet size to be transferred between the SL811HS and a slave
USB peripheral. Essentially, this designates the largest packet size that can be transferred by the SL811HS. Base Length
designates the size of data packet to be sent or received. For example, in full-speed BULK mode the maximum packet length is
64 bytes. In ISO mode, the maximum packet length is 1023, since the SL811HS only has an 8-bit length; the maximum packet
size for the ISO mode using the SL811HS is 255 – 16 bytes (register space). When the Host Base Length register is set to zero,
a Zero-Length packet will be transmitted.
3.1.2.5 USB-A/USB-B USB Packet Status (Read) and Host PID, Device Endpoint (Write) [Address = 03h, 0Bh]
This register has two modes dependent on whether it is read or written. When READ, this register provides packet status and it
contains information relative to the last packet that has been received or transmitted. This register is not valid to be read until
after the Done interrupt has occurred, which will cause the register to be updated. The register is defined as follows.
Table 3-6. USB-A/USB-B USB Packet Status Register Definition when READ [Address 03h, 0Bh]
When WRITTEN, this register provides the PID and Endpoint information to the USB SIE engine to be used in the next transaction.
All sixteen Endpoints can be addressed by the SL811HS.
Table 3-7. USB-A / USB-B Host PID and Device Endpoint Register when WRITTEN [Address 03h, 0Bh]
PID[3:0]: 4-bit PID Field (See Table Below), EP[3:0]: 4-bit Endpoint Value in Binary.
Document 38-08008 Rev. *B
PID TYPE
SETUP
IN
OUT
SOF
PREAMBLE
NAK
STALL
DATA0
DATA1
Bit Position Bit Name
STALL
HBL7
Bit 7
Bit 7
Bit 7
PID3
7
6
5
4
3
2
1
0
STALL
NAK
Overflow
Setup
Sequence
Time-out
Error
ACK
HBL6
Bit 6
Bit 6
Bit 6
PID2
NAK
D7-D4
1101 (D Hex)
1001 (9 Hex)
0001 (1 Hex)
0101 (5 Hex)
1100 (C Hex)
1010 (A Hex)
1110 (E Hex)
0011 (3 Hex)
1011 (B Hex)
Overflow
Function
Slave device returned a STALL.
Slave device returned a NAK.
Overflow condition - maximum length exceeded during receives. For underflow, see Section
3.1.2.6.
This bit is not applicable for Host operation since a SETUP packet is generated by the host.
Sequence Bit. “0” if DATA0, “1” if DATA1.
Time-out occurred. A time-out is defined as 18-bit times without a device response (in Full-
speed).
Error detected in transmission. This includes CRC5, CRC16, and PID errors.
Transmission Acknowledge.
HBL5
PID1
Bit 5
Bit 5
Bit 5
Setup
HBL4
PID0
Bit 4
Bit 4
Bit 4
Sequence
HBL3
Bit 3
Bit 3
Bit 3
EP3
Time-out
HBL2
Bit 2
Bit 2
Bit 2
EP2
HBL1
Error
Bit 1
Bit 1
Bit 1
EP1
SL811HS
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HBL0
Bit 0
Bit 0
ACK
Bit 0
EP0
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