Section 18 Universal Serial Bus Interface (USB)
Rev. 3.00 Jan 25, 2006 page 605 of 872
REJ09B0286-0300
Table 18.5 Packets Included in Each Transaction
Stage
Token Phase Data Phase
Handshake Phase
*
1
Setup stage
SETUP token
packet
OUT data packet (8 bytes)
(host to slave)
ACK handshake
packet (slave to host)
Data stage
OUT token
packet
OUT data packet
(host to slave)
ACK/NAK/STALL
handshake packet
(slave to host)
IN data packet (0 bytes)
*
2
(slave to host)
ACK handshake
packet (host to slave)
Control write
transfer
Status stage IN token
packet
NAK/STALL handshake
packet
(slave to host)
—
IN data packet
(slave to host)
ACK handshake
packet (host to slave)
Data stage
IN token
packet
NAK/STALL handshake
packet
(slave to host)
—
Control read
transfer
Status stage OUT token
packet
OUT data packet
(host to slave)
ACK/NAK/STALL
handshake packet
(slave to host)
IN data packet (0 bytes)
*
2
(slave to host)
ACK handshake
packet (host to slave)
No data stage Status stage IN token
packet
NAK/STALL handshake
packet
(slave to host)
—
Notes: 1. This phase exists only when a data packet has been transferred in the data phase.
2. If the FIFO is empty after all data items in the FIFO have been transferred, the EPTE bit
is cleared to 0. If an IN transaction is initiated at this time, a NAK handshake is
returned. To transfer a 0-byte data packet, set the EPTE bit to 1 while the FIFO is
empty.
Figures 18.2 to 18.5 show the USB function core and LSI firmware operations when the USB
function core receives a SETUP token (SETUP transaction).
Summary of Contents for H8S/2158
Page 10: ...Rev 3 00 Jan 25 2006 page viii of lii...
Page 36: ...Rev 3 00 Jan 25 2006 page xxxiv of lii B Product Lineup 863 C Package Dimensions 864 Index 865...
Page 47: ...Rev 3 00 Jan 25 2006 page xlv of lii Appendix Figure C 1 Package Dimensions TBP 112A 864...
Page 54: ...Rev 3 00 Jan 25 2006 page lii of lii...
Page 70: ...Section 1 Overview Rev 3 00 Jan 25 2006 page 16 of 872 REJ09B0286 0300...
Page 118: ...Section 3 MCU Operating Modes Rev 3 00 Jan 25 2006 page 64 of 872 REJ09B0286 0300...
Page 126: ...Section 4 Exception Handling Rev 3 00 Jan 25 2006 page 72 of 872 REJ09B0286 0300...
Page 198: ...Section 6 Bus Controller Rev 3 00 Jan 25 2006 page 144 of 872 REJ09B0286 0300...
Page 326: ...Section 10 8 Bit PWM Timer PWM Rev 3 00 Jan 25 2006 page 272 of 872 REJ09B0286 0300...
Page 440: ...Section 15 Watchdog Timer WDT Rev 3 00 Jan 25 2006 page 386 of 872 REJ09B0286 0300...
Page 606: ...Section 17 I 2 C Bus Interface IIC Rev 3 00 Jan 25 2006 page 552 of 872 REJ09B0286 0300...
Page 742: ...Section 19 Multimedia Card Interface MCIF Rev 3 00 Jan 25 2006 page 688 of 872 REJ09B0286 0300...
Page 750: ...Section 21 D A Converter Rev 3 00 Jan 25 2006 page 696 of 872 REJ09B0286 0300...
Page 768: ...Section 22 A D Converter Rev 3 00 Jan 25 2006 page 714 of 872 REJ09B0286 0300...
Page 770: ...Section 23 RAM Rev 3 00 Jan 25 2006 page 716 of 872 REJ09B0286 0300...
Page 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Page 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Page 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Page 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...