CY22801KSXC-XXX(2011) Ver la hoja de datos (PDF) - Cypress Semiconductor
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CY22801KSXC-XXX Datasheet PDF : 23 Pages
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CY22801
Table 4. Summary Table – CY22801 Programmable Registers
Register
Description
09H CLKOE control
D7
D6
D5
D4
D3
D2
D1
D0
0
0
CLKC
CLKA
0
CLKB
0
0
OCH
12H
13H
DIV1SRC mux and
DIV1N divider
Input crystal oscillator
drive control
Input load capacitor
control
DIV1SRC
FTAAd-
drSrc[1]
CapLoad
(7)
DIV1N(6)
FTAAd-
drSrc[0]
CapLoad
(6)
DIV1N(5)
XCapSrc
CapLoad
(5)
DIV1N(4)
XDRV(1)
CapLoad
(4)
DIV1N(3)
XDRV(0)
CapLoad
(3)
DIV1N(2)
0
CapLoad
(2)
DIV1N(1)
0
CapLoad
(1)
DIV1N(0)
0
CapLoad
(0)
40H Charge pump and PB
1
41H counter
PB(7)
1
PB(6)
42H PO counter, Q counter PO
Q(6)
44H Crosspoint switch
1
1
matrix control
45H
CLKSRC0
1
for CLKB
0
PB(5)
Q(5)
1
1
Pump(2)
PB(4)
Q(4)
1
1
Pump(1) Pump(0) PB(9)
PB(8)
PB(3)
PB(2)
PB(1)
PB(0)
Q(3)
Q(2)
Q(1)
Q(0)
1
1
CLKSRC2 CLKSRC1
for CLKB for CLKB
CLKSRC2 CLKSRC1 CLKSRC0 CLKSRC2
for CLKA for CLKA for CLKA for CLKC
46H
CLKSRC1 CLKSRC0
1
1
1
1
1
1
for CLKC for CLKC
47H DIV2SRC mux and
DIV2N divider
DIV2SRC DIV2N(6) DIV2N(5) DIV2N(4) DIV2N(3) DIV2N(2) DIV2N(1) DIV2N(0)
Table 5. Programmable Crystal Input Oscillator Gain Settings
Crystal input
frequency
Cap Register Settings
Effective Load Capacitance
(CapLoad)
Crystal ESR
8 to 15 MHz
15 to 20 MHz
20 to 25 MHz
00H – 80H
6 pF to 12 pF
30 Ω
00
01
01
60 Ω
01
10
10
25 to 30 MHz
10
10
80H – C0H
12 pF to 18 pF
30 Ω
01
01
10
10
60 Ω
10
10
10
11
C0H – FFH
18 pF to 30 pF
30 Ω
01
10
10
11
60 Ω
10
10
11
N/A
Table 6. Crystal Oscillator Gain Bit Locations and Values
Address
D7
D6
D5
D4
D3
D2
D1
D0
12H
0
0
1
XDRV(1) XDRV(0)
0
0
0
Table 7. Programmable External Reference Input Oscillator Drive Settings
Reference Frequency
Drive Setting
1 to 25 MHz
00
25 to 50 MHz
01
50 to 90 MHz
10
90 to 133 MHz
11
Document #: 001-15571 Rev. *E
Page 7 of 23
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