JDP2S01T Datasheet, PDF (124/150 Pages) Toshiba Semiconductor – UHF~VHF Band RF Attenuator Applications

Philips Semiconductors
ISP1362
Single-chip USB OTG controller
Table 129: DcErrorCode register: bit description…continued
Bit
Symbol
Description
5
-
reserved
4 to 1
ERROR[3:0] Error code. For error description, see Table 130.
0
RTOK
Logic 1 indicates that data was successfully received or
transmitted.
Table 130: Transaction error codes
Error code Description
(Binary)
0000
no error
0001
PID encoding error; bits 7 to 4 are not the inverse of bits 3 to 0
0010
PID unknown; encoding is valid, but PID does not exist
0011
unexpected packet; packet is not of the expected type (token, data or
acknowledge) or is a SET-UP token to a non-control endpoint
0100
token CRC error
0101
data CRC error
0110
time-out error
0111
babble error
1000
unexpected end-of-packet
1001
sent or received NAK (Not AcKnowledge)
1010
sent Stall; a token was received, but the endpoint was stalled
1011
overflow; the received packet was larger than the available buffer space
1100
sent empty packet (ISO only)
1101
bit stuffing error
1110
sync error
1111
wrong (unexpected) toggle bit in DATA PID; data was ignored
16.3.2 Unlock Device (B0H)
This command unlocks the DC from write-protection mode after a ‘resume’. In the
‘suspend’ state, all registers and buffer memory are write-protected to prevent data
corruption by external devices during a ‘resume’. Also, the register access for reading
is possible only after the ‘unlock device’ command is executed.
After waking up from the ‘suspend’ state, the firmware must unlock the registers and
buffer memory by using this command, by writing the unlock code (AA37H) into the
DcLock register (8-bit bus: lower byte first). The bit allocation of the DcLock register is
given in Table 131.
Code (Hex): B0 — unlock the device
Transaction — write 2 bytes (unlock code) (code or data)
Table 131: DcLock register: bit allocation
Bit
15
14
13
Symbol
Reset
1
0
1
Access
W
W
W
12
11
UNLOCK[15:8] = AAH
0
1
W
W
9397 750 12337
Product data
Rev. 03 — 06 January 2004
10
9
8
0
1
0
W
W
W
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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