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ISP1581BD Datasheet(PDF) 39 Page - NXP Semiconductors

Part # ISP1581BD
Description  Universal Serial Bus 2.0 high-speed interface device
PDF  73 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

ISP1581BD Datasheet(HTML) 39 Page - NXP Semiconductors

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Philips Semiconductors
ISP1581
USB 2.0 HS interface device
Objective specification
Rev. 02 — 23 October 2000
39 of 73
9397 750 07648
© Philips Electronics N.V. 2000. All rights reserved.
9.5.3
Frame Number register (address: 74H)
This read-only register contains the frame number of the last successfully received
Start Of Frame (SOF). The register contains 2 bytes and the bit allocation is given in
Table 62. In case of 8-bit access the register content is returned lower byte first.
Table 60: Chip ID register: bit allocation
Bit
23
22
21
20
19
18
17
16
Symbol
VERSION[7:0]
Reset
01H
Bus reset
01H
Access
R
Bit
15
14
13
12
11
10
9
8
Symbol
CHIPID[15:8]
Reset
15H
Bus reset
15H
Access
R
Bit
7
6
5
4
3
2
1
0
Symbol
CHIPID[7:0]
Reset
81H
Bus reset
81H
Access
R
Table 61: Chip ID Register: bit description
Bit
Symbol
Description
23 to 16
VERSION
Version number (01H). The version number will be incremented
in case of a silicon revision with improved performance and
functionality.
15 to 8
CHIPID[15:8]
Chip ID: upper byte (15H)
7 to 0
CHIPID[7:0]
Chip ID: lower byte (81H)
Table 62: Frame Number register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
reserved
reserved
MICROSOF[2:0]
SOFR[10:8]
Power Reset
0
0
00H
00H
Bus Reset
0
0
00H
00H
Access
RR
R
R
Bit
7
6
5
4
3
2
1
0
Symbol
SOFR[7:0]
Power Reset
00H
Bus Reset
00H
Access
R



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