ISP1362BDFA STEricsson, ISP1362BDFA Datasheet - Page 118

• Manufacturer Part Number: ISP1362BDFA
• Manufacturer: STEricsson

Specifications of ISP1362BDFA

• Lead Free Status / RoHS Status: Compliant

Table 133. DcLock register: bit allocation
ISP1362_7
Product data sheet
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
15.3.2 Unlock Device (B0h)
15.3.3 DcScratch register (R/W: B3h/B2h)
15
W
W
1
7
0
Table 132. Transaction error codes
This command unlocks the peripheral controller 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 to
read is possible only after the ‘unlock device’ command is executed.
After waking up from the suspend state, the firmware must unlock 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
Code (Hex): B0 — unlock the device
Transaction — write 2 bytes (unlock code) (code or data)
Table 134. DcLock register: bit description
This command accesses the 16-bit DcScratch register, which can be used by the firmware
to save and restore information. For example, the device status before powering down in
the suspend state.
The register bit allocation is given in
Error code
(Binary)
1000
1001
1010
1011
1100
1101
1110
1111
Bit
15 to 0
133.
14
W
W
0
6
0
Symbol
UNLOCK[15:0]
Description
unexpected end-of-packet
sent or received NAK (Not Acknowledge)
sent stall; a token was received, but the endpoint was stalled
overflow; the received packet was larger than the available buffer space
sent empty packet (ISO only)
bit stuffing error
sync error
wrong (unexpected) toggle bit in DATA PID; data was ignored
13
W
W
1
5
1
Rev. 07 — 29 September 2009
Description
Sending data AA37h unlocks internal registers and buffer memory to
write, following a resume.
UNLOCK[15:8] = AAh
UNLOCK[7:0] = 37h
12
W
W
0
4
1
…continued
Table
135.
11
W
W
1
3
0
Single-chip USB OTG controller
10
W
W
0
2
1
© ST-ERICSSON 2009. All rights reserved.
W
W
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ISP1362
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W
W
8
0
0
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