PIC24FJ256GB210-I/PT Microchip Technology Inc., PIC24FJ256GB210-I/PT Datasheet - Page 233

• Manufacturer Part Number: PIC24FJ256GB210-I/PT
• Description: 100 TQFP 12x12x1mm TRAY, 16-bit, 256KB Flash, 96K RAM, USB
• Manufacturer: Microchip Technology Inc.

Specifications of PIC24FJ256GB210-I/PT

• A/d Inputs: 24 Channel, 10-bit
• Comparators: 3
• Cpu Speed: 16 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 84
• Interface: I2C/SPI/UART/USART/USB
• Memory Type: Flash
• Number Of Bits: 16
• Package Type: 100-pin TQFP
• Programmable Memory: 256K Bytes
• Ram Size: 98K Bytes
• Speed: 32 MHz
• Temperature Range: –40 to 85 °C
• Timers: 5-16-bit
• Voltage, Range: 2.2-3.6 V
• Lead Free Status / Rohs Status: RoHS Compliant part

18.0
PIC24FJ256GB210 family devices contain a full-speed
and low-speed compatible, On-The-Go (OTG) USB
Serial Interface Engine (SIE). The OTG capability
allows the device to act either as a USB peripheral
device or as a USB embedded host with limited host
capabilities. The OTG capability allows the device to
dynamically switch from device to host operation using
OTG’s Host Negotiation Protocol (HNP).
For more details on OTG operation, refer to the
“On-The-Go Supplement” to the “USB 2.0 Specifica-
tion”, published by the USB-IF. For more details on
USB operation, refer to the “Universal Serial Bus
Specification”, v2.0.
The USB OTG module offers these features:
• USB functionality in Device and Host modes, and
• Software-selectable module speeds of full speed
• Support for all four USB transfer types: control,
• 16 bidirectional endpoints for a total of 32 unique
• DMA interface for data RAM access
• Queues up to sixteen unique endpoint transfers
• Integrated, on-chip USB transceiver with support
• Integrated V
• Configurations for on-chip bus pull-up and
A simplified block diagram of the USB OTG module is
shown in Figure 18-1.
 2010 Microchip Technology Inc.
Note:
OTG capabilities for application-controlled mode
switching
(12 Mbps) or low speed (1.5 Mbps, available in
Host mode only)
interrupt, bulk and isochronous
endpoints
without servicing
for off-chip transceivers via a digital interface
comparators and boost generation, and support of
external V
through a digital interface
pull-down resistors
UNIVERSAL SERIAL BUS WITH
ON-THE-GO SUPPORT (USB
OTG)
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F
Section 27. “USB On-The-Go (OTG)”
(DS39721). The information in this data
sheet supersedes the information in the
FRM.
BUS
BUS
comparators and regulators
generation with on-chip
Family
Reference
Manual”,
PIC24FJ256GB210 FAMILY
The USB OTG module can function as a USB peripheral
device or as a USB host, and may dynamically switch
between Device and Host modes under software
control. In either mode, the same data paths and Buffer
Descriptors (BDs) are used for the transmission and
reception of data.
In discussing USB operation, this section will use a
controller-centric nomenclature for describing the direc-
tion of the data transfer between the microcontroller and
the USB. RX (Receive) will be used to describe transfers
that move data from the USB to the microcontroller and
TX (Transmit) will be used to describe transfers that
move data from the microcontroller to the USB.
Table 18-1 shows the relationship between data
direction in this nomenclature and the USB tokens
exchanged.
TABLE 18-1:
This chapter presents the most basic operations
needed to implement USB OTG functionality in an
application. A complete and detailed discussion of the
USB protocol and its OTG supplement are beyond the
scope of this data sheet. It is assumed that the user
already has a basic understanding of USB architecture
and the latest version of the protocol.
Not all steps for proper USB operation (such as device
enumeration) are presented here. It is recommended
that application developers use an appropriate device
driver to implement all of the necessary features.
Microchip provides a number of application-specific
resources, such as USB firmware and driver support.
Refer to www.microchip.com/usb for the latest
firmware and driver support.
USB Mode
Device
Host
CONTROLLER-CENTRIC
DATA DIRECTION FOR USB
HOST OR TARGET
OUT or SETUP
RX
IN
Direction
DS39975A-page 233
OUT or SETUP
TX
IN