w83l950d Winbond Electronics Corp America, w83l950d Datasheet - Page 30
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w83l950d
Manufacturer Part Number
w83l950d
Description
Peripheral Personal Computer Keyboard Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83L950D.pdf
(105 pages)
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8.9
8.10 B Register
8.11 CLK Controller Register
Accumulator
Bit:
ACC.7-0
B.7-0 The B register is the standard 8032 accumulator
B.7-6 PLL CLK OUT SELECT
B.5-4 PLL INPUT CLOCK SOURCE SELECT
B.2 4MHZ RING OSC ENABLE
B.1 PLL ENABLE
B.0
PLL CLOCK INPUT is directly connected to Xin and Xout pin.
Bit:
Bit:
Default: 0x40
= 1: 8051 CLK source is from PLL block and bit 7-6 is enable.
= 0: CLK source is Xin and Xout.
= 1: CLK source is Xcin and Xcout.
Mnemonic: ACC
Mnemonic: B
Mnemonic: CLKCTRL
= 0: 8051 CLK source is from Xin and Xout pin. and bit 7-6 is
= 00: 4Mhz
= 01: 8MHz
= 10: Reserved
= 11: Reserved
= 00: 8MHz
= 01: 14.318MHz
= 10: Reserved
= 11: Reserved
= 0: 8051 CLK source is from Xin and Xout pin..
= 1: 8051 CLK source is from 4MHZ RING OSC.
CLK SOURCE SELECT
7
CLKSEL 1-0
ACC.7
The A or ACC register is the standard 8032 accumulator
disable.
B.7
7
7
6
ACC.6
B.6
6
6
FREQSEL 1-0
5
ACC.5
B.5
5
5
4
- 21 -
ACC.4
B.4
3
-
4
4
Address: E0h
Address: F0h
Publication Release Date: June 23, 2003
Address: 9Dh
ACC.3
B.3
-RING_EN
3
3
2
ACC.2
B.2
2
2
W83L950D
PLLEN
1
ACC.1
B.1
1
1
Revision 1.0
CLKSEL#
ACC.0
B.0
0
0
0
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