參數(shù)資料
型號: ISP1561BM,557
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP128
封裝: 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-420-1, LQFP-128
文件頁數(shù): 29/103頁
文件大?。?/td> 457K
代理商: ISP1561BM,557
ISP1561_2
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 02 — 5 March 2007
31 of 103
NXP Semiconductors
ISP1561
HS USB PCI Host Controller
9.3 Information loading from EEPROM
Figure 4 shows the content of the EEPROM memory. If the EEPROM is not present, the
default values of Device ID (DID), Vendor ID (VID), subsystem VID and subsystem DID
assigned to NXP Semiconductors by PCI-SIG will be loaded. See Table 3 for these default
value. For instructions on programming the EEPROM, refer to application note Ref. 1
10. Power management
10.1 PCI bus power states
The PCI bus can be characterized by one of the four power management states: B0, B1,
B2 and B3.
B0 state (PCI clock = 33 MHz, PCI bus power = on) — This corresponds to the bus
being fully operational.
B1 state (PCI clock = intermittent clock operation mode, PCI bus power = on) —
When a PCI bus is in B1, VDD is still applied to all devices on the bus. No bus transactions,
however, are allowed to take place on the bus. The B1 state indicates a perpetual idle
state on the PCI bus.
B2 state (PCI clock = stop, PCI bus power = on) — VDD is still applied on the bus, but
the clock is stopped and held in the LOW state.
B3 state (PCI clock = stop, PCI bus power = off) — VDD is removed from all devices on
the PCI bus segment.
L = LOW; H = HIGH.
Fig 4.
Information loading from EEPROM
004aaa930
subsystem vendor ID (L)
0
1
3
4
6
5
2
subsystem vendor ID (H)
subsystem device ID (L) - OHCI
subsystem device ID (H) - OHCI
subsystem device ID (L) - EHCI
subsystem device ID (H) - EHCI
reserved - FFh
signature
15h - loads subsystem vendor ID, device ID
1Ah - loads default values defined by NXP Semiconductors
7
address
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