Philips Semiconductors
ISP1520
Hi-Speed USB hub controller
Product data Rev. 03 — 24 November 2004 17 of 51
9397 750 13701
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
9.2.3 ROM or EEPROM map
Remark: A 128-byte EEPROM supports one language ID only, and a 256-byte
EEPROM supports two language IDs.
9.2.4 ROM or EEPROM detailed map
Table 11: Configuration method
Configuration method SCL SDA
Internal ROM ground ground
External EEPROM 2.2 kΩ to 4.7 kΩ pull-up 2.2 kΩ to 4.7 kΩ pull-up
External microcontroller driven LOW by the
microcontroller during reset
2.2 kΩ to 4.7 kΩ 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 -
06 bcdDevice (low) 00 - device release; silicon revision
increments this value
07 bcdDevice (high) 02 -
08 RSV, iSN, iP, iM - 00 if all the three strings are supported, the
value of this byte is 39H
09 reserved - FF -
String descriptor Index 0 (language ID)
0A bLength
[1]
- 06 two language ID support
