參數(shù)資料
型號： TSC2302IRGZRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQCC48
封裝： GREEN, PLASTIC, VQFN-48
文件頁數(shù)： 69/85頁
文件大?。?/td> 1483K
代理商： TSC2302IRGZRG4
www.ti.com
www.ti.com
TSC2302
SLAS394 – JULY 2003
Table 36. Left Channel Audio Bypass Mute
BPMUL
DESCRIPTION
0
Left channel audio bypass path is active.
1
Left channel audio bypass path is mute. (default)
Bits [14:8] — BPVL6- BPVL0
Left Channel Audio Bypass Path Volume Control. These 7 bits control the gain setting of the left channel bypass
path volume control PGA. This volume control can be programmed from -35.5 dB to 12 dB in 0.5 dB steps. Full
volume (12 dB) corresponds to a setting of 7Fh. Unity gain (0 dB) corresponds to 67h. Full attenuation (-35.5 dB)
corresponds to 20h. Any value lower than 20h engages the mute function described above. The default volume
setting is 0 dB.
BPVL[6:0] = 1100111 (103d) = 0 dB (default)
BPVL[6:0] = 1111111 (127d) = 12 dB (Max)
BPVL[6:0] = 0100000 (032d) = -35.5 dB (Min)
BPVL[6:0] = 0d-31d = mute
Bit 7 — BPMUR
Right Channel Audio Bypass Mute. This bit is used to mute the bypass path from the right channel line input
(RLINEIN) to the headphone output. The user can set this bit to mute the bypass path while retaining the
previous gain setting in BPVR[6:0], so that the PGA returns to the previous gain setting when BPMUR is cleared.
When the BPMUR bit is set, the PGA soft-steps down to its lowest level, then the bypass path is muted. This
procedure is used to reduce any audible artifacts (pops or clicks) during the mute operation. This soft-stepping
process is reversed when the BPMUR bit is cleared (unmute).
Table 37. Right Channel Audio Bypass Mute
BPMUR
DESCRIPTION
0
Right channel audio bypass path is active.
1
Right channel audio bypass path is mute. (default)
Bits [6:0] — BPVR6- BPVR0
Right Channel Audio Bypass Path Volume Control. These 7 bits control the gain setting of the right channel
bypass path volume control PGA. This volume control can be programmed from -35.5 dB to 12 dB in 0.5-dB
steps. Full volume (12 dB) corresponds to a setting of 7Fh. Unity gain (0 dB) corresponds to 67h. Full attenuation
(-35.5 dB) corresponds to 20h. Any value lower than 20h engages the mute function described above. The
default volume setting is 0 dB.
BPVR[6:0] = 1100111 (103d) = 0 dB (default)
BPVR[6:0] = 1111111 (127d) = 12 dB (Max)
BPVR[6:0] = 0100000 (032d) = -35.5 dB (Min)
BPVR[6:0] = 0d-31d = mute
AUDIO CONTROL REGISTER 2 (Page 2, Address 04H)
The Audio Control Register 2 of the TSC2302 controls the input to the mono output, and the soft-stepping
function of the TSC2302 volume controls.
The keyclick control register is formatted as follows:
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
MSB
LSB
RESV
MONS
SSRT
SSTE
E
P
71
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