Toshiba TLCS-900/H1 Series Data Book page 214

3.10.3.28 Set Descriptor STALL register
This register set Set-Descriptor-request whether returns STALL automatically in data stage or
status stage.
Set Descriptor STALL
7
symbol -
R/W -
Bit0：S_D_STALL
0：Software contorol （default）
1：Automatically STALL
3.10.3.29 Descriptor RAM
This register use for store of Descriptor in RAM. Size of Descriptor is 384byte.But you must write
to following format to Descriptor RAM-sturucture-sample when store Descriptor.
Descriptor RAM (0500H to 067FH)
7
symbol D7
R/W R/W
Possible timing in RD／WR is only before detect in USB_RESETand performing SET_DESCRIPTOR
request.
This SET_DESCRIPTOR-request-transaction-time is until access EOP register since INT_SETUP
assert. If there is rewriting request of Descriptorin in SET_DESCRIPTOR, you process request
belowsequence.
1) Read out every packet Descriptor transfer in SET_DESCRIPTOR request.
2) When finish reading out Descriptor number of last packet, you write all Descriptor RAM to
Descriptor.
3) When finish writing, you execute INIT_DESCRIPTOR of command register.
4) When finish all transaction, access EOP register and finish status stage.
5) When recive into INT_STATUS, it is finished status stage.
You don't have to execute INIT_DESCRIPTOR command when connect host. It is reading
automatically start detect in USB_RESET.
(07E8H)
6 5
- -
- -
6 5
D6 D5
R/W R/W
92CH21-210
4 3
- -
- -
4 3
D4 D3
R/W R/W
TMP92CH21
2 1
- - S_D_STALL
- -
2 1
D2 D1
R/W R/W
0
W
0
D0
R/W