fs6377 AMI Semiconductor, Inc., fs6377 Datasheet - Page 10

• Manufacturer Part Number: fs6377
• Description: Fs6377-01g Programmable 3-pll Clock Generator Ic
• Manufacturer: AMI Semiconductor, Inc.

FS6377-01x Programmable 3-PLL Clock Generator IC
6.0 Programming Information
Table 3: Register Map
Note: All register bits are cleared to zero on power-up.
6.1 Control Bit Assignment
If any PLL control bit is altered during device operation, including those bits controlling the reference and feedback dividers, the output
frequency will slew smoothly (in a glitch-free manner) to the new frequency. The slew rate is related to the programmed loop filter time
constant.
However, any programming changes to any mux or post divider control bits will cause a glitch on an operating clock output.
Address
Byte 15
Byte 14
Byte 13
Byte 12
Byte 11
Byte 10
Byte 9
Byte 8
Byte 7
Byte 6
Byte 5
Byte 4
Byte 3
Byte 2
Byte 1
Byte 0
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(selected via SEL_CD = 0)
(selected via SEL_CD = 0)
(selected via SEL_CD = 1
BIT 7
MUX_D2[1:0]
MUX_D1[1:0]
MUX_C1[1:0]
MUX_B[1:0]
MUX_A[1:0]
Specifications subject to change without notice
– Oct., 2007 – Rev. 3.0
(selected via SEL_CD = 1)
(selected via SEL_CD = 0)
BIT 6
POST_D2[3:0]
POST_D1[3:0]
POST_B[3:0]
(selected via SEL_CD pin = 1)
FBKDIV_C2[7:3] M-Counter
FBKDIV_C1[7:3] M-Counter
(selected via SEL_CD = 0)
FBKDIV_B[7:3] M-Counter
FBKDIV_A[7:3] M-Counter
Reserved (0)
PDPLL_C
PDPLL_B
PDPLL_A
(selected via SEL_CD = 1)
BIT 5
MUX_C2[1:0]
(SEL_CD = 1)
(SEL_CD = 0)
LFTC_C2
LFTC_C1
LFTC_B
LFTC_A
(selected via SEL_CD pin = 1)
BIT 4
(selected via SEL_CD = 0)
REFDIV_C2[7:0]
REFDIV_C1[7:0]
REFDIV_B[7:0]
REFDIV_A[7:0]
10
PDPOST_D
(SEL_CD = 1)
(SEL_CD = 0)
CP_C2
CP_C1
CP_B
CP_A
BIT 3
PDPOST_C
(selected via SEL_CD = 1)
(selected via SEL_CD = 0)
BIT 2
POST_C2[3:0]
POST_C1[3:0]
POST_A[3:0]
(selected via SEL_CD pin = 1)
(selected via SEL_CD pin = 1)
FBKDIV_D2[10:8] M-Counter
FBKDIV_c1[10:8] M-Counter
FBKDIV_B[10:8] M-Counter
FBKDIV_A[10:8] M-Counter
FBKDIV_C2[2:0] A-Counter
FBKDIV_C1[2:0] A-Counter
(selected via SEL_CD = 0)
(selected via SEL_CD = 1)
FBKDIV_B[2:0] A-Counter
FBKDIV_A[2:0] A-Counter
PDPOST_B
BIT 1
PDPOST_A
BIT 0
Data Sheet