Datasheet

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TSC2301

SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004

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

KEYCLICK CONTROL REGISTER (Page 2, Address 04H)

The Keyclick Control Register of the TSC2301 controls the setup of the internal keyclick sound generator. This

sound. This register also controls the input to the differential mono output, and the soft-stepping function of the

TSC2301 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

KEYST KCAM KCA KCAM RESV KCFR KCFR KCFR KCLN3 KCLN2 KCLN1 KCLN0 RESV MONS SSRT SSTE

2 M1 0 2 1 0 E P

Bit 15 — KEYST

Keyclick Start. This bit initiates a keyclick sound.

Table 44. Keyclick Start

KEYST Description

0 No keyclick sound (default)

1 Initiate a keyclick sound