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參數(shù)資料
型號： W88113C
廠商： WINBOND ELECTRONICS CORP
英文描述： ATAPI CD-ROM DECODER & CONTROLLER
中文描述： ATAPI的CD - ROM解碼器
文件頁數(shù)： 85/102頁
文件大?。?/td> 573K
代理商： W88113C
W88113C
Publication Release Date: Mar. 1999
- 81 - Revision 0.61
5.2.2 General I/O
Pin HRSTb (21)
and pin
ARSTb (60)
can be configured as general I/O pins through register
MISC1
(2Fh,w)
. The state of these two general I/O pins can be controlled through register
GIOCTL (5Fh)
.
The pin state of
URS (32)
can be read back from
GIN3 (5Fh.r2)
if
DRA (5Bh.1)
is high and
DA0EN
(87h.7)
is low.
5.2.3 Programmable System Clock
The internal system frequency is controlled by
CCTL1 (1Ah,w)
and
PSKCTL (59h,w)
. Register
PSKCTL (59h,w)
should be set before the programmable system clock is enabled by setting
PSKEN
(1Ah.w4)
high. If both
PSKEN (1Ah.w4)
and
PSKSEL (59h.w7)
are high,
PSK5-0 (59h.5-0)
are used
to controlled the internal system frequency. Register
PSKCTL (59h,w)
should be set before the
programmable system clock is enabled by setting
PSKEN (1Ah.w4)
high. The equation is:
frequency system clock = frequency of XIN (PSK[5:0] + 2) 16
The variation of the resultant system frequency is normally less than 5%.
<example> If the frequency of pin XIN (15) is 33.8688 MHz,
PSKEN (1Ah.w4)
and
PSKSEL (59h.w7)
are high:
PSK5-0
0Fh
11h
13h
15h
17h
19h
1Bh
System Frequency
36 MHz
40.2 MHz
44.4 MHz
48.7 MHz
53 MHz
57.2 MHz
61.4 MHz
<example> If the frequency of pin XIN (15) is 24 MHz,
PSKEN (1Ah.w4)
and
PSKSEL (59h.w7)
are
high:
PSK5-0
14h
16h
18h
1Ah
1Ch
1Eh
20h
System Frequency
33 MHz
36 MHz
39 MHz
42 MHz
45 MHz
48 MHz
51 MHz
相關(guān)PDF資料
PDF描述
W88113CD ATAPI CD-ROM DECODER & CONTROLLER
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W88113CD 制造商:WINBOND 制造商全稱:Winbond 功能描述:ATAPI CD-ROM DECODER & CONTROLLER
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W88611P 制造商:WINBOND 制造商全稱:Winbond 功能描述:VCD 4X RF AMP/DIGITAL SERVO & DSP
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