ucb1500 NXP Semiconductors, ucb1500 Datasheet - Page 16

• Manufacturer Part Number: ucb1500
• Description: Pci To Ac97 Bridge/host Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 07443
Product specification
[0F]: BIST (read only):
[10]: I/O port base address
Table 18: I/O Port Base Address register bit description
[2C-2F] Subsystem ID/Subsystem Vendor ID (read only):
EEPROM interface or through register 6E-6Ch. Default Value = 3401h / 1131h.
[34] Capability pointer (read only):
registers.
[3C]: Interrupt Register
Table 19: Interrupt Register register bit description
[40-43] Device ID Write / Vendor ID Write:
Device ID and Vendor ID registers. Writing to this register will update the original
Device ID and Vendor ID registers (offset 0h-3h).
[44h]: Revision ID:
[45-47] Class code Write:
Writing to this register will update the original Class Code registers (offset 9h-Bh).
[48]: EEPROM status register /Misc
Table 20: EEPROM Status Register / Misc. register bit description
Bit
31-16(r)
15-4
3-1
0
Bit
15:8
7:0
Bit
0
Description
I/O port Base address
A[31:16] always 0.
I/O port Base address
A[15:4]; programmable address space for control registers.
Always 000b
Always 1b
Description
Interrupt pin (read only)
Always 01h interrupt pin connected to INTA.
Interrupt line
Interrupt line routing information.
Description
EEPROM autoload status
If set, EEPROM autoload cycle is in progress.
Rev. 03 — 7 July 2000
Same as offset 08.
Always 0; no built-in test capability.
This register contains a copy of the Class Code registers.
80h points to start offset of power management
This register contains a copy of the
PCI to AC97 bridge/host controller
© Philips Electronics N.V. 2000. All rights reserved.
Programmable through
UCB1500
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