isp1181 NXP Semiconductors, isp1181 Datasheet - Page 39

• Manufacturer Part Number: isp1181
• Description: Isp1181 Full-speed Universal Serial Bus Interface Device
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 39:
Table 41:
9397 750 08938
Product data
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Lock Register: bit allocation
Scratch Information Register: bit allocation
reserved
R/W
R/W
15
15
W
W
1
7
0
0
7
0
12.3.3 Write/Read Scratch Register
12.3.4 Read Frame Number
Table 40:
This command accesses the 16-bit Scratch Register, which can be used by the
firmware to save and restore information, e.g. the device status before powering
down in ‘suspend’ state. The register bit allocation is given in
Code (Hex): B2/B3 — write/read Scratch Register
Transaction — write/read 2 bytes
Table 42:
This command returns the frame number of the last successfully received SOF. It is
followed by reading one or two bytes from the Frame Number Register, containing the
frame number (lower byte first). The Frame Number Register is shown in
Remark: After a bus reset, the value of the Frame Number Register is undefined.
Bit
15 to 0
Bit
15
14 to 8
7 to 0
R/W
R/W
14
14
W
W
0
6
0
0
6
0
Scratch Information Register: bit description
Error Code Register: bit description
Symbol
UNLOCK[15:0]
Symbol
-
SFIRH[6:0]
SFIRL[7:0]
R/W
R/W
13
13
W
W
1
5
1
0
5
0
Rev. 04 — 30 October 2001
UNLOCKH[7:0] = AAH
UNLOCKL[7:0] = 37H
Description
reserved; must be logic 0
Scratch Information Register (high byte)
Scratch Information Register (low byte)
R/W
R/W
Sending data AA37H unlocks the internal registers and FIFOs
12
Description
for writing, following a ‘resume’.
12
W
W
0
4
1
0
4
0
SFIRL[7:0]
SFIRH[6:0]
R/W
R/W
11
11
W
W
1
3
0
0
3
0
R/W
R/W
10
10
W
W
0
2
1
0
2
0
© Koninklijke Philips Electronics N.V. 2001. All rights reserved.
Full-speed USB interface
Table
R/W
R/W
W
W
9
1
1
1
9
0
1
0
41.
ISP1181
Table
R/W
R/W
W
W
8
0
0
1
8
0
0
0
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43.