CY28312B-2T SPECTRALINEAR [SpectraLinear Inc], CY28312B-2T Datasheet - Page 6

• Manufacturer Part Number: CY28312B-2T
• Manufacturer: SPECTRALINEAR [SpectraLinear Inc]

Rev 1.0, November 21, 2006
Byte 2: Control Register 2 (continued)
Byte 3: Control Register
Byte 4: Watchdog Timer Register
Byte 5: Control Register 5
Byte 6: Reserved Register
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit
Bit
Bit
Bit
Bit
Reserved
Reserved
Reserved
Reserved
Pin#
47
48
Name
9
7
6
–
–
–
Pin#
Pin#
13
11
10
Pin#
22
21
46
47
48
–
–
–
–
–
–
–
–
9
–
–
Latched FS4 input
Latched FS3 input
Latched FS2 input
Latched FS1 input
Latched FS0 input
Reserved
Reserved
SEL4
Default
PCI2
PCI1
PCI0
1
1
1
1
Reserved
FS_Override
WD_TIMER4
WD_TIMER3
WD_TIMER2
WD_TIMER1
WD_TIMER0
WD_PRE_SCAL
ER
PCI_F
PCI9_E
Reserved
PCI8
REF2
Reserved
REF1
REF0
Name
Name
Name
Reserved
Reserved
Reserved
Reserved
Name
Default
Default
Default
X
X
X
X
X
0
0
0
Default
1
1
0
1
1
0
1
1
0
0
1
1
1
1
1
0
1
1
1
Latched FS[4:0] inputs. These bits are read-only.
Reserved
Reserved
SW Frequency selection bits. See Table 4.
(Active/Inactive)
(Active/Inactive)
Reserved
(Active/Inactive)
(Active/Inactive)
Reserved
(Active/Inactive)
(Active/Inactive)
Reserved
0 = Select operating frequency by FS[4:0] input pins
1 = Select operating frequency by SEL[4:0] settings
These bits store the time-out value of the Watchdog
timer. The scale of the timer is determine by the
prescaler.
The timer can support a value of 150 ms to 4.8 sec
when the prescaler is set to 150 ms. If the prescaler is
set to 2.5 sec, it can support a value from 2.5 sec to 80
sec.
When the Watchdog timer reaches “0”, it will set the
WD_TO_STATUS bit.
0 = 150 ms
1 = 2.5 sec
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
Description
Description
Description
Description
Description
CY28312B-2
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