isp1582 NXP Semiconductors, isp1582 Datasheet - Page 48

• Manufacturer Part Number: isp1582
• Description: Hi-speed Universal Serial Bus Peripheral Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 66.
Table 68.
ISP1582_6
Product data sheet
Bit
Symbol
Reset
Bus reset
Access
Bit
Symbol
Reset
Bus reset
Access
Bit
Symbol
Reset
Bus reset
Access
Bit
Symbol
Scratch register: bit allocation
Unlock Device register: bit allocation
8.5.4 Scratch register (address: 78h)
8.5.5 Unlock Device register (address: 7Ch)
R/W
R/W
15
15
W
0
0
7
0
0
7
Table 65.
This 16-bit register can be used by the firmware to save and restore information. For
example, the device status before it enters the suspend state. The bit allocation is given in
Table
Table 67.
To protect registers from getting corrupted when the ISP1582 goes into suspend, the write
operation is disabled if bit PWRON in the Mode register is set to logic 0. In this case, when
the chip resumes, the Unlock Device command must first be issued to this register before
attempting to write to the rest of the registers. This is done by writing unlock code (AA37h)
to this register. The bit allocation of the Unlock Device register is given in
Bit
15 to 14
13 to 11
10 to 0
Bit
15 to 8
7 to 0
66.
R/W
R/W
14
14
W
0
0
6
0
0
6
Frame Number register: bit description
Scratch register: bit description
Symbol
-
MICROSOF[2:0]
SOFR[10:0]
Symbol
SFIRH[7:0]
SFIRL[7:0]
R/W
R/W
13
13
W
0
0
5
0
0
5
Rev. 06 — 20 September 2007
Description
Scratch firmware information register (higher byte)
Scratch firmware information register (lower byte)
ULCODE[15:8] = AAh
ULCODE[7:0] = 37h
R/W
R/W
12
12
Description
reserved
microframe number
frame number
W
0
0
4
0
0
4
not applicable
not applicable
SFIRH[7:0]
SFIRL[7:0]
R/W
R/W
11
11
W
0
0
3
0
0
3
Hi-Speed USB Peripheral Controller
R/W
R/W
10
10
W
0
0
2
0
0
2
R/W
R/W
W
9
0
0
1
0
0
9
1
© NXP B.V. 2007. All rights reserved.
ISP1582
Table
68.
R/W
R/W
W
8
0
0
0
0
0
8
0
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