參數(shù)資料
型號(hào): ISP1520BD,557
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP64
封裝: 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64
文件頁數(shù): 9/54頁
文件大?。?/td> 288K
代理商: ISP1520BD,557
ISP1520_4
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 — 28 April 2006
16 of 53
Philips Semiconductors
ISP1520
Hi-Speed USB hub controller
When external microcontroller mode is selected and while the external microcontroller is
writing to the internal RAM, any request to congurable descriptors will be responded to
with a Not AcKnowledge (NAK). There is no specied time-out period for the NAK signal.
This data is then passed to the host during the enumeration process.
The three conguration methods are selected by connecting pins SCL and SDA in the
manner given in Table 11.
8.2.3 ROM or EEPROM map
Remark: A 128 B EEPROM supports one language ID only, and a 256 B EEPROM
supports two language IDs.
8.2.4 ROM or EEPROM detailed map
Table 11.
Conguration method
SCL
SDA
Internal ROM
ground
External EEPROM
2.2 k
to 4.7 k pull-up
2.2 k
to 4.7 k pull-up
External microcontroller
driven LOW by the
microcontroller during reset
2.2 k
to 4.7 k pull-up
Fig 8.
ROM or EEPROM map
mld714
Signature
00h
02h
10h
7Fh
FFh
80h
0Ah
Device Descriptor
String Descriptor
(first Language ID):
iManufacturer string
iProduct string
iSerial Number string
String Descriptor
(second Language ID):
iManufacturer string
iProduct string
iSerial Number string
Language ID
Table 12.
ROM or EEPROM detailed map
Address
(hex)
Content
Default
(hex)
Example
(hex)
Comment
Signature descriptor
00
signature (low)
55
-
signature to signify valid data comment
01
signature (high)
AA
-
Device descriptor
02
idVendor (low)
CC
-
Philips Semiconductors vendor ID
03
idVendor (high)
04
-
04
idProduct (low)
20
-
ISP1520 product ID
05
idProduct (high)
15
-
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