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TC9455F Datasheet(PDF) 3 Page - Toshiba Semiconductor |
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TC9455F Datasheet(HTML) 3 Page - Toshiba Semiconductor |
3 / 14 page TC9455,88F/N 2002-02-05 3 Pin Description (Note 1) Pin Number TC9455N TC9488N TC9455F TC9488F Symbol I/O Function Remarks 1 1 VDD ― Digital supply voltage pin 2 2 CSCC I Capacitor connecting pin for CR oscillator (C = 68 pF) 3 3 OSCR I Resistor connecting pin for CR oscillator (R = 5.6 kΩ) 4 5 VOL1 ( CS ) I When VOLST = “H” level, CS signal input pin When VOLST = “L” level, DC control pin for MIC1 volume 5 6 VOL2 (SCL) I When VOLST = “H” level, clock input pin When VOLST = “L” level, DC control pin for MIC2 volume Open drain output 6 7 VOL3 (SDA) I When VOLST = “H” level, data input pin When VOLST = “L” level, DC control pin for echo volume Open drain output 7 9 VRO ― Reference voltage pin 8 10 VREF ― Reference voltage pin (1/2 VDD) 9 11 VDA ― Analog supply voltage pin 10 13 ALC1 I Auto level control pin 1 11 14 MC1N I MIC1 feedback signal input pin 12 15 MC1P I MIC1 signal input pin 13 16 MC2P I MIC2 signal input pin 14 17 MC2N I MIC2 feedback signal input pin 15 18 ALC2 I Auto level control pin 2 16 20 VSA ― Analog ground pin 17 21 MCO O MIC addition signal output pin 18 22 PRIN I Pre-filter input pin 19 23 ADIN I Pre-filter output signal or DC input pin 20 25 DAOUT O Post-filter output pin 21 26 VOLST I Electronic volume control mode select pin When VOLST = “H” level, serial control (I 2C bus/three-lead) When VOLST = “L” level, DC level control 22 28 TEST I Test pin. Fix to “H” level for normal use 23 29 POOUT O Microphone echo signal output pin 24 30 VSS ― Digital ground pin Note 1: With the TC9455F and TC9488F, pins 4, 8, 12, 19, 24, and 27 are not connected (NC pins). NC pins are normally open. |
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