參數(shù)資料
型號: MB86604LPFV
元件分類: 總線控制器
英文描述: SCSI BUS CONTROLLER, PQFP100
封裝: PLASTIC, LQFP-100
文件頁數(shù): 36/56頁
文件大?。?/td> 382K
代理商: MB86604LPFV
41
MB86604L
(8) A/N/S values in the SCSI interface timing specification
Transfer period register (address 0Dh) and A/N values
Note: The A and N values set in the register are the assert period and the negate period respectively (unit is clock
cycles)
For the AC characteristics, A/N use numerals.
Asynchronous setup time register (address 17h) setting and the S value.
Note: The S (setup time) value established in the set up time register during asynchronous data transfers indicates
the time from setting data in the data bus until the REQ/ACK signals are asserted.
For the AC characteristics, S uses numerals.
Transfer period register
AN
Transfer period register
AN
Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
00001
Prohibit
10001
9
8
00010
1
10010
9
00011
2
1
10011
10
9
00100
2
10100
10
00101
3
2
10101
11
10
00110
3
10110
11
00111
4
3
10111
12
11
01000
4
11000
12
01001
5
4
11001
13
12
01010
5
11010
13
01011
6
5
11011
14
13
01100
6
11100
14
01101
7
6
11101
15
14
01110
7
11110
15
01111
8
7
11111
16
15
10000
8
00000
16
Asynchronous setup
time register
S
Asynchronous setup
time register
S
Bit 3 Bit 2 Bit 1 Bit 0
0001
1
1001
9
0010
2
1010
10
0011
3
1011
11
0100
4
1100
12
0101
5
1101
13
0110
6
1110
14
0111
7
1111
15
1000
8
0000
16
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