Sundance SMT942 - Manual (Page 21)

User Manual SMT942 Page 21 of 55 Last Edited: 23/08/2011 17:25:00
1 Reserved Reserved
Default ‘000000’ ‘00’
0 Reserved BIAS_DIV45 Reserved
Default ‘00’ ‘00’ ‘0101’
Reset Register A 0x1A
Setting Bit 5:4 Description BIAS_DIV01 Current reduction output dividers 0 and 1
0 ‘00’ No current output reduction
1 ‘01’ 20% output current reduction
2 ‘10’ 30% output current reduction
CLOCK Register B 0x1B.
Clock Register B 0x1B
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1 Reserved
Default ‘01101000’
0 Reserved
Default ‘00000000’
CLOCK Register C 0x1C.
Clock Register C 0x1C
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit
3
Bit 2 Bit 1 Bit 0
1 Reserved DET_STAR
T_BYPASS
FB_START
_BYPASS
Default ‘000000’ ‘0’ ‘0’
0 DIV2_DIS DIV_SEL Reserve
d
FB_FD_DESEL Reserved
Default ‘0’ ‘0’ ‘0’ ‘0’ ‘0110’
Reset Register C 0x1C
Setting Bit 4 Description FB_FD_DESEL
0 ‘0’ Feedback frequency detector is connected to the lock detector
1 ‘1’ Feedback frequency detector is disconnected from the lock detector
Setting Bit 6 Description DIV_SEL
0 ‘0’ FB Clock divided by 1
1 ‘1’ FB Clock divided by 2
Setting Bit 7 Description DIV2_DIS
0 ‘0’ Normal mode of operation
1 ‘1’ FB Div2 in reset
Setting Bit 8 Description FB_START_BYPASS