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PC87108AVJE Datasheet(PDF) 6 Page - National Semiconductor (TI) |
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PC87108AVJE Datasheet(HTML) 6 Page - National Semiconductor (TI) |
6 / 56 page 1.0 Pin Description (Continued) Symbol Pin(s) Type Description INFRARED INTERFACE SIGNALS ID0/IRSL0/IRRX2 37 I/O Transceiver Identification/Control or Secondary Infrared Receive. Multi function pin implementing the following functions: — ID0, to read identification data to support Plug-n-Play infrared adapters. — IRSL0, to select the transceiver operational mode. — IRRX2, used either as a high-speed receiver input (for MIR and FIR) to support transceiver modules with two receive data outputs, or as an auxiliary input to support two transceiver modules. ID1/IRSL1, ID2/IRSL2 36, 35 I/O Transceiver Identification or Control. Used to read identification data to support Plug-n-Play infrared adapters, as well as to select the transceiver operational mode. ID3 25 I Transceiver Identification. Used to read identification data to support Plug-n-Play infrared adapters. IRRX1 38 I Infrared Receiver. Primary input to receive serial data from the infrared transceiver module. If the infrared transceiver provides two receive data output, the low-speed output should be connected to this pin. IRRX3 79 I Auxiliary Infrared Receiver. This pin can be used as an auxiliary infrared receiver input when two infrared transceiver modules are used in the system. IRTX 39 O Infrared Transmit. This output sends serial data to the transceiver module(s). MISCELLANEOUS SIGNALS BADDR0, 1 22, 23 I Base Address. These inputs are sampled during reset to select the device accessing mode and/or the address of the Index register (Section 4.2). An internal 30 k Ω pull-down resistor is used on these pins. External 10 kΩ resistors can be used to pull these pins to V DD. CLKIN 47 I Clock. 48 MHz clock input. GPIO0, GPIO1 42, 43 I/O General Purpose I/O. These pins are programmable as input or output, and can be used to control external devices. They have open-drain outputs and weak internal pull-ups. GPIO2/AUXSL 44 I/O General Purpose I/O or Auxiliary Infrared Input Select. Dual function pin. The pin function is controlled by the AUXIR__SL bit in the MCTL register (Section 4.2.3). This pin has an open-drain output and a weak internal pull-up. GPIO3/BUSY 45 I/O General Purpose I/O or Busy Status. Dual function pin. The pin function is controlled by the BUSY__SL bit in the MCTL register (Section 4.2.3). This pin has an open-drain output and a weak internal pull-up. RESERVED 48, 69 Reserved. No connections should be made to these pins. www.national.com 6 |
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