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HD151TS207SS датащи(PDF) 20 Page - Renesas Technology Corp

номер детали HD151TS207SS
подробное описание детали  Mother Board Clock Generator for Intel P4 Chipset (Springdale)
PDF  38 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD151TS207SS датащи(HTML) 20 Page - Renesas Technology Corp

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HD151TS207SS
Rev.1.00, Apr.25.2003, page 20 of 38
I
2C Controlled Register Bit Map (cont.)
Byte22 Control Register
Bit
Description
Contents
Type
Default
Note
7
CPU Frequency Read Bit7
R
0
6
CPU Frequency Read Bit6
R
0
5
CPU Frequency Read Bit5
R
0
4
CPU Frequency Read Bit4
Calculation result of CPU frequency.
1 MHz digit
0000 = 0, 0001 = 1 …. 1001 = 9
R0
3
CPU Frequency Read Bit3
R
0
2
CPU Frequency Read Bit2
R
0
1
CPU Frequency Read Bit1
R
0
0
CPU Frequency Read Bit0
Calculation result of CPU frequency.
0.1 MHz digit
0000 = 0, 0001 = 1 …. 1001 = 9
R0
Byte23 Control Register
Bit
Description
Contents
Type
Default
Note
7
Watchdog Enable Control Bit
0 = Disable , Pin22 = 3V66_0 output
1 = Enable , Pin22 = RESET# output
R/W
0
6
RESET# Reverse Control Bit
0 = Normal , 1 = Reverse
R/W
0
5
Watchdog Timer Count Bit3
R/W
1
4
Watchdog Timer Count Bit2
R/W
0
3
Watchdog Timer Count Bit1
R/W
0
2
Watchdog Timer Count Bit0
These 4 bits corresponds to how
many watchdog timer will wait from
becoming “Alarm mode” (B23[0] = 1)
to outputting RESET# pin to “Low”.
Default is 586ms x8 = 4.7s at Power
ON
R/W
0
1
Backup Frequency Select Bit
0 = B10[4:0] , 1 = B11[4:0]
When SAFE_F# is “Low” , frequency
mode is changed to the predefined
frequency mode decided by B10[4:0]
or B11[4:0].
R/W
0
0
Watchdog Status Bit
0 = Normal mode, 1 = Alarm mode
R/W
0



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