IDT5V49EE902
EEPROM PROGRAMMABLE CLOCK GENERATOR
CLOCK SYNTHESIZER
IDT EEPROM PROGRAMMABLE CLOCK GENERATOR
24
IDT5V49EE902
REV P 092412
Programming Registers Table
Addr
Default
Register
Hex
Value
Bit #
Description
76
5
4
3
2
1
0
0x00
00
Reserved
HW/SW
Hardware/Software Mode control
HW/SW - 0=HW, 1=SW
0x01
00
Reserved
SEL[2:0]
SEL[2:0] - selects configuration in
SW mode
0x02
02
SP
OE6
OE5
OE4
OE3
OE2
OE1
OE0
OEx=Output Power Suspend
function for OUTx (‘1’=OUTx will
be suspended on SD/OE pin.
Disable mode is defined by
OEMx bits), ‘0’=outputs enabled
and no association with OE pin
(default).
0x03
02
Reserved
OS*[6:0]
OS*[6:0] - output suspend, active
low. Overwrites OE setting.
0x04
0F
SH
Reserved
PLLS*[3:0]
PLLS*[3:0] - PLL Suspend, active
low
SH - shutdown/OE configuration
0x05
04
Reserved
XTCLKSEL
Reserved
XTCLKSEL - crystal/clock select.
0=Crytal, 1=ICLK
0x06
00
Reserved
0x07
00
Reserved
XTAL[4:0]
XTAL[4:0] - crystal cap
0x08
00
Reserved
0x09
00
Reserved
0x0A
10
CZ0_CFG4
IP0[2:0]_CFG4
RZ0[3:0]_CFG4
PLL0 loop parameter
0x0B
10
CZ0_CFG5
IP0[2:0]_CFG5
RZ0[3:0]_CFG5
0x0C
10
CZ0_CFG0
IP0[2:0]_CFG0
RZ0[3:0]_CFG0
0x0D
10
CZ0_CFG1
IP0[2:0]_CFG1
RZ0[3:0]_CFG1
0x0E
10
CZ0_CFG2
IP0[2:0]_CFG2
RZ0[3:0]_CFG2
0x0F
10
CZ0_CFG3
IP0[2:0]_CFG3
RZ0[3:0]_CFG3
0x10
00
Reserved
D0[6:0]_CFG0
PLL0 input divider and input sel
D0[6:0] - 127 step Ref Div
D0 = 0 means power down.
0x11
00
Reserved
D0[6:0]_CFG1
0x12
00
Reserved
D0[6:0]_CFG2
0x13
00
Reserved
D0[6:0]_CFG3
0x14
00
Reserved
D0[6:0]_CFG4
0x15
00
Reserved
D0[6:0]_CFG5
0x16
01
N0[7:0]_CFG4
N - Feedback Divider
2 - 4095 (values of “0” and “1” are
not allowed) Total feedback with
A, using provided calculation
0x17
01
N0[7:0]_CFG5
0x18
01
N0[7:0]_CFG0
0x19
01
N0[7:0]_CFG1
0x1A
01
N0[7:0]_CFG2
0x1B
01
N0[7:0]_CFG3
0x1C
00
A0[3:0]_CFG0
N0[11:8]_CFG0
0x1D
00
A0[3:0]_CFG1
N0[11:8]_CFG1
0x1E
00
A0[3:0]_CFG2
N0[11:8]_CFG2
0x1F
00
A0[3:0]_CFG3
N0[11:8]_CFG3
0x20
00
A0[3:0]_CFG4
N0[11:8]_CFG4
0x21
00
A0[3:0]_CFG5
N0[11:8]_CFG5
0x22
10
CZ1_CFG4
IP1[2:0]_CFG4
RZ1[3:0]_CFG4
PLL1 Loop Parameter
0x23
10
CZ1_CFG5
IP1[2:0]_CFG5
RZ1[3:0]_CFG5
0x24
10
CZ1_CFG0
IP1[2:0]_CFG0
RZ1[3:0]_CFG0
0x25
10
CZ1_CFG1
IP1[2:0]_CFG1
RZ1[3:0]_CFG1
0x26
10
CZ1_CFG2
IP1[2:0]_CFG2
RZ1[3:0]_CFG2
0x27
10
CZ1_CFG3
IP1[2:0]_CFG3
RZ1[3:0]_CFG3
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