ucb1500 NXP Semiconductors, ucb1500 Datasheet - Page 31

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

Philips Semiconductors
9397 750 07443
Product specification
8.3.4 [0065]: General purpose counter #0
8.3.5 [0066-0067]: Reserved
8.4.1 [0068]: EEPROM data register
8.4.2 [0069]: EEPROM control #1
8.4.3 [006a] EEPROM control #2
8.4.4 [006b-009f]: Reserved
8.4 EEPROM
See register 62 for description.
Table 45: EEPROM data register bit description
This register does not control the EEPROM state machine. These data are read/write
data for the EEPROM auto mode.
Table 46: EEPROM control #1 register bit description
Table 47: EEPROM control #2 register bit description
Bit
15-0
Bit
15-13
12
11
10
9
8(w)
7-1(w)
0(w)
Bit
15-5
4(r)
3(r)
2(r)
1
0
Description
16-bit EEPROM data
Description
Reserved.
Manual mode: EEPROM data input
Manual mode: EEPROM data output
Manual mode: EEPROM data output enable
Manual mode: EEPROM clock
Auto mode: 1 = EEPROM write data cycle, 0 = read cycle
Auto mode: EEPROM address bits 7-1 of the EEPROM address
Bit 0 is always 0 when accessing the EEPROM.
Auto mode: 1 = START
Start auto mode a 16-bit EEPROM cycle sequencer.
Description
Reserved.
1 = EEPROM ERROR in the previous cycle
EEPROM acknowledge not received.
EEPAUTO
1 = Power-up Auto load EEPROM initialization in progress.
1 = Auto mode EEPROM cycle in progress status
Reserved.
1 = EEPROM in manual mode
Rev. 03 — 7 July 2000
PCI to AC97 bridge/host controller
© Philips Electronics N.V. 2000. All rights reserved.
UCB1500
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