參數(shù)資料
型號: MT8LLN22NCNE
元件分類: 總線控制器
英文描述: PCI BUS CONTROLLER, PBGA316
封裝: 27 X 27 MM, PLASTIC, BGA-316
文件頁數(shù): 121/145頁
文件大?。?/td> 2285K
代理商: MT8LLN22NCNE
Coppertail Product Specification
MT8LLN22NCNE.fm – Rev. 1, Pub. 2/02
77
2002, Micron Technology Inc.
PRELIMINARY
MT8LLN22NCNE
COPPERTAIL
Timer Control Word Register
NOTE:
Each Counter must be setup with a write to 43h prior to use.
3:1
Mode Select Status.
000: Mode 0. Out signal on end of count.
001: Mode1. Hardware trigger one-shot.
x10: Mode2. Divide by n counter.
x11: Mode3. Square wave output.
100: Mode 4. Software trigger strobe.
101: Mode 5. Hardware trigger strobe.
W/O
000b
0
Binary/BDC Countdown Select Status.
0: Binary countdown.
1: Binary Coded Decimal (BCD).
W/O
0
ADDRESS: 43h
SYMBOL: TCW
BITS
DESCRIPTION
PROPERTIES
RESET
7:6
Counter select. This field selects the counter the control word will act
upon. The READ BACK command is selected when this field is all ones.
00: Counter 0 select
01: Counter 1 select
10: Counter 3 select
11: Read Back Command. See definition below.
W/O
00b
5:4
Read/Write Control. This field controls the access to the 16-bit Count reg-
isters.
00: Counter Latch Command. See definition below.
01: Access Least Significant Byte (LSB).
10: Access Most Significant Byte (MSB).
11: Access LSB then MSB.
W/O
00b
3:1
Mode Select. Select the mode of operation for the selected counter.
000: Mode 0. Out signal on end of count.
001: Mode 1. Hardware trigger one-shot.
x10: Mode 2. Divide by n counter.
x11: Mode 3. Square wave output.
100: Mode 4. Software trigger strobe.
101: Mode 5. Hardware trigger strobe.
W/O
000b
0
Binary/BDC Countdown Select.
0: Binary countdown.
1: Binary Coded Decimal (BCD).
W/O
0
Interval Timer Status Byte Format Register (continued)
ADDRESS: 40h
SYMBOL: SBYTE_FMT
ADDRESS: 41h
ADDRESS: 42h
COUNTER 0
COUNTER 1
COUNTER 2
BITS
DESCRIPTION
PROPERTIES
RESET
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