isp1521 NXP Semiconductors, isp1521 Datasheet - Page 18

• Manufacturer Part Number: isp1521
• Description: Hi-speed Universal Serial Bus Hub Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
ISP1521_4
Product data sheet
8.2.3 ROM or EEPROM map
8.2.4 ROM or EEPROM detailed map
Remark: A 128 B EEPROM supports one language ID only, and a 256 B EEPROM
supports two language IDs.
Table 12.
Address
(hex)
Signature descriptor
00
01
Device descriptor
02
03
04
05
06
07
08
09
String descriptor Index 0 (language ID)
0A
0B
0C
0D
0E
0F
Fig 8. ROM or EEPROM map
Content
signature (low)
signature (high)
idVendor (low)
idVendor (high)
idProduct (low)
idProduct (high)
bcdDevice (low)
bcdDevice (high)
RSV, iSN, iP, iM
reserved
bLength
bDescriptorType
wLANGID[0]
wLANGID[1]
ROM or EEPROM detailed map
[1]
Rev. 04 — 30 March 2006
Default
(hex)
55
AA
CC
04
21
15
00
02
-
-
-
-
-
-
-
-
0Ah
FFh
7Fh
00h
02h
10h
80h
(second Language ID):
Example
(hex)
-
-
-
-
-
-
-
-
00
FF
06
03
09
04
09
08
iSerial Number string
iSerial Number string
iManufacturer string
iManufacturer string
(first Language ID):
Device Descriptor
String Descriptor
String Descriptor
[2]
iProduct string
iProduct string
Language ID
Signature
Comment
signature to signify valid data comment
Philips Semiconductors vendor ID
ISP1521 product ID
device release; silicon revision increments
this value
if all the three strings are supported, the
value of this byte is 39h
-
two language ID support
STRING
LANGID code zero (first language ID)
(English USA in this example)
LANGID code one (second language ID)
(English UK in this example)
mld714
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Hi-Speed USB hub controller
ISP1521
18 of 55