Targus RemoteTunes for iPod
This is the Targus RemoteTunes(tm) for iPod. I got it from XSCargo, where they currently have them available for CDN$9.99.
Its guts include a transmitter and receiver pair. Even considering I don’t have an iPod to use this with, for $10.. I’m not arguing.
The receiver has:
- HiMark RX3310A [20 Pin SSOP] – UHF ASK Receiver
- Microchip 12F675 – 8-bit PIC Microcontroller
The transmitter has:
- Microchip PIC 16C505 – 8-bit PIC Microcontrollers
- EPCOS R 800 CHT4 – Crystal
The receiver and transmitter both have some unused pins on them:
Receiver (Base):
- J: ICSP Data
- C: ICSP Clock
- V: VPP / !MCLR
- G: Ground
- +: 3.3V from iPod
PIC Pins:
- Power (Vcc = 3.3V)
- ?
- (Something to do with the output jack)
- VPP (Programming Voltage) / !MCLR (Reset)
- Data (From HiMark Pin 8)
- ICSP Clock
- ICSP Data / Serial Transmit
- Ground
HiMark Pins: (Pages 11-12 of Datasheet. Pins I especially care about are un-italicized.)
- Oscillator 2 (From Tunable Coil)
- IF filter output
- Comparator input A
- Comparator input B
- Comparator offset adjustment
- Ground
- Ground
- Data (to PIC Pin 5)
- Disable
- Comparator input C
- Limiter Input
- Limiter Feedback A
- Limiter Feedback B
- RF Amplifier Input (Virf)
- RF Amplifier Ground (Vee)
- RF Amplifier Output (Vorf)
- Mixer Input
- Power (Vcc = 3.3V)
- Power (Vcc =.3.3V)
- Oscillator 1 (To Tunable Coil)
Transmitter (Remote):
- J: VPP / !MCLR
- C: Serial Programming Clock
- Unlettered: Serial Programming Data
- G: Ground
- +: Batteries (6V)
PIC Pins:
- Power (Batteries)
- ?
- Play/Pause Button (Center)
- VPP (Programming Voltage) / !MCLR (Reset)
- Volume Down (Bottom Left)
- Volume Up (Bottom Right)
- ?
- LED
- ?
- Crystal?
- ?
- Serial Programming Clock / Back Button (Top Left)
- Serial Programming Data / Forward (Top Right)
- Ground
See also:
Apple iPod Jack Pinout – Explains the pinout and protocol for 2nd and 3rd Generation iPods.
(iPod is a trademark of Apple Computer, Inc.)