Why do USB-PD Traces sometimes show volage on CC1 AND CC2, and other times show voltage on only CC1 OR CC2?
![Is it necessary to connect the CC1/CC2 pins to ground with a 5.1k resistor? I would like to make a pcb which has a female usb type c port which converts to Is it necessary to connect the CC1/CC2 pins to ground with a 5.1k resistor? I would like to make a pcb which has a female usb type c port which converts to](https://preview.redd.it/is-it-necessary-to-connect-the-cc1-cc2-pins-to-ground-with-v0-1jgv4d4glr0a1.png?width=640&crop=smart&auto=webp&s=c6ea2e2cc30809c2590b1fe62d20a02bfc314ceb)
Is it necessary to connect the CC1/CC2 pins to ground with a 5.1k resistor? I would like to make a pcb which has a female usb type c port which converts to
![Simple way to use USB Type-C to get 5V at up to 3A (15W) - Power - Engineering and Component Solution Forum - TechForum │ Digi-Key Simple way to use USB Type-C to get 5V at up to 3A (15W) - Power - Engineering and Component Solution Forum - TechForum │ Digi-Key](https://global.discourse-cdn.com/digikey/original/2X/c/c3a86011a5b4fe495bd91157570bb253474ca28a.png)
Simple way to use USB Type-C to get 5V at up to 3A (15W) - Power - Engineering and Component Solution Forum - TechForum │ Digi-Key
![Share about Firmware-Hardware and the latest USB Type-C PD technology. : USB Type-C Configuration Channel (CC) pin function (English version) Share about Firmware-Hardware and the latest USB Type-C PD technology. : USB Type-C Configuration Channel (CC) pin function (English version)](http://3.bp.blogspot.com/-3YFIjRmidYs/VBjjenmDkVI/AAAAAAAAAjQ/MI5j9l-3Ih4/s1600/Type_c_accessory_detection.jpg)
Share about Firmware-Hardware and the latest USB Type-C PD technology. : USB Type-C Configuration Channel (CC) pin function (English version)
![usb c - Can USB Type-C 2.0 upstream (device) connect its CC pins and share a pull-down? - Electrical Engineering Stack Exchange usb c - Can USB Type-C 2.0 upstream (device) connect its CC pins and share a pull-down? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/Hb6M5.png)