參數(shù)資料
型號: UCB1500
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: PCI to AC97 bridge/host controller
中文描述: PCI BUS CONTROLLER, PQFP80
封裝: 12 X 12 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-315-1, LQFP-80
文件頁數(shù): 30/58頁
文件大?。?/td> 1001K
代理商: UCB1500
Philips Semiconductors
UCB1500
PCI to AC97 bridge/host controller
Objective specification
Rev. 01 — 4 February 2000
30 of 58
9397 750 06854
Philips Electronics N.V. 2000. All rights reserved.
8.3 General purpose counters
8.3.1
[0062]: General purpose counter #1
8.3.2
[0063]: Counter control #1
8.3.3
[0064]: Counter control #2
Table 42: General purpose counter #1 register bit description
Bit
Description
15-0
Counter #1
16-bit up counter. Writes to this register specifies the stop value for this counter.
This counter can generate an interrupt when stop value is reached by
programming the interrupt enable registers.
Table 43: Counter control #1 register bit description
Bit
Description
15-12
Counter #0 rate control:
0000 = disable
0001 =
PCICLK
32
0010 =
PCICLK
64
0011 =
PCICLK
128
0100 =
PCICLK
256
0101 =
PCICLK
512
0110 =
PCICLK
1024
0111 =
PCICLK
2048
1000 =
PCICLK
4096
1001 =
PCICLK
8192
1010 =
PCICLK
16384
1011 =
PCICLK
32768
1100 =
PCICLK
65536
1101 =
PCICLK
131072
1110 =
PCICLK
262144
1111 =
PCICLK
524288
Counter #1 rate control:
See counter #0 control.
Reserved.
11-8
7-0
Table 44: Counter control #2 register bit description
Bit
Description
15-4
Reserved.
3
Clear counter #0
Writing a ‘1’ to this bit will clear and then restart counter #1.
2
Clear counter #1
Writing a ‘1’ to this bit will clear and then restart counter #0.
1-0
Reserved.
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