92HD66B IDT [Integrated Device Technology], 92HD66B Datasheet - Page 81
92HD66B
Manufacturer Part Number
92HD66B
Description
FOUR CHANNEL HD AUDIO CODECS
Manufacturer
IDT [Integrated Device Technology]
Datasheet
1.92HD66B.pdf
(286 pages)
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92HD66B
FOUR CHANNEL HD AUDIO CODECS WITH DUAL CAPLESS HEADPHONE AMPLIFIERS
©2011 INTEGRATED DEVICE TECHNOLOGY, INC.
Field Name
ChargePumpFreqBypass
ChargePumpClkRate
ChargePumpClkDiv
ChargePumpClkSel
PortBPadGnd
PortBInputGnd
Rsvd3
Bits
16
Capless charge pump frequency reg bypass.
15:12
Capless charge pump clock rate:
0000b = 800.0kHz (24MHz/30)
0001b = 750.0kHz (24MHz/32)
0010b = 706.9kHz (24MHz/34)
0011b = 666.7kHz (24MHz/36)
0100b = 631.6kHz (24MHz/38)
0101b = 600.0kHz (24MHz/40)
0110b = 571.4kHz (24MHz/42)
0111b = 545.5kHz (24MHz/44)
1000b = 800.0kHz (24MHz/30)
1001b = 857.1kHz (24MHz/28)
1010b = 923.1kHz (24MHz/26)
1011b = 1.000MHz (24MHz/24)
1100b = 1.091MHz (24MHz/22)
1101b = 1.200MHz (24MHz/20)
1110b = 1.333MHz (24MHz/18)
1111b = 1.500MHz (24MHz/16)
11:9
Capless charge pump analog clock divider:
010b = Divide by 2, 50% duty cycle
100b = Divide by 4, 50% duty cycle
110b = Divide by 2, 75% duty cycle
011b = Divide by 4, 75% duty cycle
111b = Divide by 4, 87.5% duty cycle
Other values undefined
8
Capless charge pump clock select: 0 = ring oscillator, 1 = charge pump clock
defined by AFGCaplessChargePumpClkRate[3:0] field below.
7
Ground the output pad of the capless amplifiers.
6
Ground the input to the capless output amplifiers.
5
Reserved.
001b = No divide
R/W
RW
RW
RW
RW
RW
RW
R
Default
1h
8h
2h
0h
0h
0h
0h
81
Reset
POR
POR
POR
POR
POR
POR
N/A (Hard-coded)
V 1.0 2/12
92HD66B
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