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TDA8415 Fiches technique(PDF) 6 Page - NXP Semiconductors |
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TDA8415 Fiches technique(HTML) 6 Page - NXP Semiconductors |
6 / 19 page May 1989 6 Philips Semiconductors Preliminary specification TV and VTR stereo/dual sound processor with integrated filters and I2C-bus control TDA8415 AF switch The AF switch is used to switch to either the internal sound sources (E1* or E1* and E2*) or, to the external sound source (E3 and E4) and is controlled via the I2C-bus. Source selector The source selector is used to connect the outputs from the AF switch to the outputs A1 to A4 as illustrated by Table 5. The selector is controlled via the I2C-bus. Muting In this mode the AF outputs A1 to A4 are muted, and the identification circuit is deactivated (mono). The muting is active after power-on reset or as a result of user control (via the mute input and bit CR3 of the control byte of the mute and port control register; see Table 4). Sound mute If the switch register is set to (00) hex, (sound mute) only the AF outputs are muted, the identification circuit is still active and can be read (status register) via the I2C-bus. Power-on reset The following actions are carried out by the internal power-on reset when it is active: • The AF outputs are muted • The identification circuit is deactivated (mono) • The control ports (C1 and C2) are set LOW • The I2C-bus transceiver is initialized When the power-on reset becomes passive the following occurs: • The AF outputs are kept in the mute state until the contents of the switch register are changed from (00) hex via the I2C-bus • The identification circuit is activated • The control ports are LOW until the mute and control port register is changed (CR bits 10, 11, 20 and 21) • The I2C-bus transceiver is activated |
Numéro de pièce similaire - TDA8415 |
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Description similaire - TDA8415 |
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