ISP1183BSTM STEricsson, ISP1183BSTM Datasheet - Page 8

• Manufacturer Part Number: ISP1183BSTM
• Manufacturer: STEricsson

Specifications of ISP1183BSTM

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / RoHS Status: Compliant

7. Functional description
ISP1183_3
Product data sheet
7.1 Analog transceiver
7.2 ST-NXP Wireless SIE
7.3 MMU and integrated RAM
7.4 SoftConnect
The ISP1183 is a full-speed USB Peripheral Controller with up to 14 configurable
endpoints. It has a fast general-purpose parallel interface for communication with many
types of microcontrollers and microprocessors. It supports an 8-bit data bus with separate
address and data. The block diagram is given in
The ISP1183 has 2462 bytes of internal FIFO memory that is shared among enabled USB
endpoints. The type and FIFO size of each endpoint can individually be configured,
depending on the required packet size. Isochronous and bulk endpoints are
double-buffered for increased data throughput.
The ISP1183 requires two supply voltages. The core voltage is supplied from V
through an internal regulator, which transforms +5.0 V to +3.3 V when V
The I/O interface voltage is supplied from V
The ISP1183 operates on a 6 MHz oscillator frequency.
The transceiver is compliant with Universal Serial Bus Specification Rev. 2.0. It directly
interfaces to the USB cable through external termination resistors.
The ST-NXP Wireless Serial Interface Engine (SIE) implements the full USB protocol
layer. It is completely hardwired for speed and needs no firmware intervention. The
functions of this block include: synchronization pattern recognition, parallel-to-serial
conversion, bit stuffing and de-stuffing, CRC checking and generation, Packet Identifier
(PID) verification and generation, address recognition, and handshake evaluation and
generation.
The Memory Management Unit (MMU) and the integrated RAM provide the conversion
between the USB speed (full-speed: 12 Mbit/s bursts) and the parallel interface to the
microcontroller (maximum 11.1 MB/s). This allows the microcontroller to read and write
USB packets at its own speed.
The connection to USB is accomplished by pulling pin DP (for full-speed USB devices) to
HIGH through a 1.5 kΩ pull-up resistor. In the ISP1183, by default, the 1.5 kΩ pull-up
resistor is integrated on-chip. The connection is established by a command sent from the
external or system microcontroller. This allows the system microcontroller to complete its
initialization sequence before deciding to establish connection with USB. Re-initialization
of the USB connection can also be performed without disconnecting the cable.
Remark: The tolerance of the internal resistors is 25 %. This is higher than the 5 %
tolerance specified by Universal Serial Bus Specification Rev. 2.0. The overall voltage
specification for the connection, however, can still be met with a good margin. The
decision to make use of this feature lies with the USB equipment designer.
Rev. 03 — 20 January 2009
Low-power USB Peripheral Controller with DMA
DD(I/O)
Figure
, which can be 1.65 V to 3.6 V.
1.
© ST-NXP Wireless 2009. All rights reserved.
BUS
ISP1183
is powered.
BUS
7 of 65