wm8595 Wolfson Microelectronics plc, wm8595 Datasheet - Page 62

• Manufacturer Part Number: wm8595
• Description: 24-bit 192khz 2vrms Multi-channel Codec
• Manufacturer: Wolfson Microelectronics plc

WM8595
Figure 40 R19-24 – PGA Volume Control Registers
R25 (19h) – PGA Control Register 1 (PGA_CTRL1)
Figure 41 R25 – PGA Control Register 1
w
Default
Default
Write
Write
Read
Read
Bit #
Bit #
ATTACK_BYPASS
DECAY_BYPASS
PGA1R_VOL[7:0]
PGA2R_VOL[7:0]
PGA1L_VOL[7:0]
PGA2L_VOL[7:0]
PGA1R_VU
PGA2R_VU
PGA1R_ZC
PGA2R_ZC
PGA1L_VU
PGA2L_VU
PGA1L_ZC
PGA2L_ZC
Function
Function
N/A
N/A
15
0
7
0
0
0
Input PGA Volume
0000 0000 = +6dB
0000 0001 = +5.5dB
…0.5dB steps
00001100 = 0dB
…
1001 1110 = -73.5dB
1001 1111 = PGA Mute
Input PGA Volume Update
0 = Latch corresponding volume setting into Register Map but do not update volume
1 = Latch corresponding volume setting into Register Map and update all channels simultaneously
PGA Gain Decay Mode
0 = PGA gain will ramp down
1 = PGA gain will step down
PGA Gain Attack Mode
0 = PGA gain will ramp up
1 = PGA gain will step up
PGA Gain Zero Cross Enable
0 = PGA gain updates occur immediately
1 = PGA gain updates occur on zero cross
Zero cross must be disabled to use gain ramp
N/A
N/A
14
0
0
6
0
0
PGA2R_ZC
N/A
13
0
0
5
0
PGA2L_ZC
N/A
12
0
0
4
0
Description
Description
PGA1R_ZC
N/A
11
0
3
0
0
N/A = Not Applicable (no function implemented)
PGA1L_ZC
N/A
10
0
0
2
0
ATTACK_
BYPASS
PD, Rev 4.1, April 2010
N/A
9
0
0
1
0
Production Data
DECAY_
BYPASS
N/A
8
0
0
0
0
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