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參數資料
| 型號： | W9330F |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Code Division Spread Spectrum Cordless Telephone Controller(具有編碼分劃和擴展頻普技術的無繩電話控制器) |
| 中文描述： | TELECOM, CORDLESS, SUPPORT CIRCUIT, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁數： | 16/26頁 |
| 文件大小： | 170K |
| 代理商： | W9330F |
Preliminary W9330F
- 16 -
14. General Purpose Timer
A general purpose timer is included in the W9330F. It can be used by the system designer for various
functions such as watch dog timer or tone generator. The output signal GPT is a 50% duty cycle
signal and the cycle time is programmable between 125 usec to 8.2 sec. The cycle time is controlled
by the register 46(Hex) and 47(Hex) with 47(Hex) being the upper byte and 46(Hex) being the lower
byte. Together they form a 16-bit value which becomes the multiplying factor for the cycle time with
125 usec being the basic time unit. When the two registers are programmed with all zero, the GPT
output stops toggle.
CONTROL REGISTERS
The control registers of the W9330F can be accessed through the system controller interface. This
section describes each control register in detail.
The following table lists all the control registers. The register types are: R/W = Read and write-able,
W = write only register, R = read only register.
REGISTER
TYPE ADDRESS
R/W
00
W
01
W
03
W
04 - 06
R
08 - 0A
W
0C - 0E
W
10
W
12
R
14
W
15
W
1E
W
1F
W
20 - 23
W
24 - 27
W
28 - 2B
W
2C - 2F
W
30 - 37
W
38 - 3F
W
40
W
41
R
42
R/W
43
W
44
W
46
W
47
Others
HARDWARE RESET VALUE
00000000
00000000
10000000
-
-
-
00000011
00001000
-
00110111
00000000
00000011
-
-
-
-
-
-
-
11111111
-
11111111
11111111
00000000
00000000
-
Command 1/Status
Command 2
Quiet Code
Transmit ST field
Received ST field
System ID
CPU Clock divider
Preamble threshold
Signal strength
Preamble count
Scrambler
Sticky count
PN code, symbol zero
PN code, symbol one
PN code, symbol two
PN code, symbol three
I/O expansion port, PA, bit wise
I/O expansion port, PB, bit wise
I/O expansion port, PA, byte wise
I/O expansion port, PB, byte wise
I/O expansion port, PC
I/O expansion port, PD
PD I/O control
GPT timer, lower byte
GPT timer, upper byte
Reserved
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