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Product Brief
January 30, 2002
UHC124 High Performance Four-Port Embedded USB Host Controller
Description
TransDimension's UHC124 is a four-port, single chip USB Host controller that is the first of a family of integrated low-cost, high-performance controllers optimized and specifically designed for embedded systems, mobile communication, and consumer products. It is a non-PCI controller that supports USB Specification Rev. 2.0 compliant full-speed (12Mb/s) and low-speed (1.5Mb/s) USB devices. It is the only non-PCI controller that has been proven to run at USB full speed, even running under a full USB stack. The UHC124 controller enables an embedded system to function as a USB Host, dramatically expanding the degree of interconnectivity and extending the applicability of USB into many new areas. In addition to silicon, development kits, USB Host Stack, device drivers for most products, and interface code to the UHC124 for numerous RTOS' are available via our wholly owned subsidiary, SoftConnex Technologies, Inc. The UHC124 has unique, patent-pending features that are indispensable for achieving high data throughput and low interrupt rates. It is the only one on the market that is designed from the ground up for embedded applications with features like batch processing, multiple interrupt modes, separate data and descriptor memory, and double buffering. It is optimized for cost, performance and ease of development. The software/hardware co-designed architecture enables high performance while maintaining simplicity and flexibility that are critical for embedded applications. It can be interfaced to CISC or RISC microprocessors, microcontrollers, or digital signal processors (DSPs) and is ideal for providing USB host functions to a wide range of applications including mobile devices, cell phones, PDAs, point-of-sale systems, test equipment, set-top boxes, Internet appliances, as well as serving as an interface for USB to Bluetooth controllers. The complete solutions offer the advantages of shortened time-to-market, simplified procurement and technical support from one source. Full USB bandwidth utilization with low load on system microprocessor Standard 8-bit microprocessor bus interface 2 Kbyte data memory Supports all four types of USB transfers (control, bulk, interrupt, and isochronous with maximum packet size of 1,023 bytes) Supports batch processing of up to 16 USB transactions without interrupting the MCU Supports scheduling of transaction batches that may "spill" over the USB frame boundaries for easy programming Supports "in-place" processing in the data memory - used for applications requiring peer-to-peer data transfer between USB devices Supports double buffering for all USB transfers Hardware generated Start of Frame (SOF) Fully qualified, market proven root hub with four ports and integrated analog transceivers. Individually controlled power-on and over-current circuit for each of the four downstream ports Power management with host suspend, remote wakeup, and power saving modes 6 MHz crystal/oscillator to reduce cost and EMI Evaulation/development kit available including C source code of the programming interface library and an interactive USB host controller Exerciser Embedded RTOS software available for popular microprocessors, RISC, CISC, and DSP's using WinCE, Linux, VxWorks, Nucleus, Lynx, QNX, pSOS, PowerTV, SMX, ThreadX, VRTX, ITRON, Symbian and MS-DOS operating systems with more in development Supports OHCI/UHCI compliant USB host stack USB device driver software available including printers, speakers, mass storage, hub, modems, Ethernet, mouse, keyboard, digital camera, video camera, cell phone, STB and PDA with more in development Industrial grade devices standard. automotive grade devices available Single 3.3V power supply 64 pin LQFP package TransDimension Inc. -- Proprietary 1 Military and
Features
High performance USB embedded applications host controller for
Supports USB Specification 2.0 compliant fullspeed (12Mb/s) and low-speed (1.5Mb/s) USB devices Patent pending design
TransDimension UHC124 Architecture
Product Brief
OSC1 OSC2 LPF
PLL PwrSav
48MHz 12MHz 6MHz
DP1, DM 1 /PO1, /OC1 Root Hub With Four Downstream Ports DP2, DM 2 /PO2, /OC2 DP3, DM 3 /PO3, /OC3 DP4, DM 4 /PO4, /OC4
/RESET
USB Host Control Logic
Host SIE
/INT
A 11..A0 D7..D0 /CS /WR /RD ADS MODE
12 8
Registers (16 Bytes)
PortChange[0:4]
5
Memory/ Register Access & MCU Interface
Control Memory (256 Bytes) Data Memory (2K Bytes)
Figure 1 UHC124 block diagram
Development
Interface with MCUs: The UHC124 may be interfaced with a microprocessor using either one of two methods: * For MCUs with standard external data bus, the UHC124 can be interfaced directly via 8 bits of its data bus and 12 bits of its address bus. When the UHC124 operates under this mode, its internal memory blocks, as well as its control/status registers, are mapped into the processor's address space. For MCUs without an external data bus, the UHC124 may be interfaced using an 8-bit output port and an 8-bit bi-directional port. Under this mode, a built-in, auto incrementing address register allows accessing to a large block of the UHC124 memory with a single (address) write cycle, followed by as many read/write cycles as the number of data bytes to be transferred from/to the UHC124.
*
Control Memory (CM): The UHC124 controller memory holds up to 16 Transaction Descriptors (XDs) used to specify up to 16 USB transactions. Data Memory (DM): The 2,048 bytes of data memory (DM) built into the UHC124 serve as data buffers shared between the MCU and USB system. Batch Processing: The user software may organize up to 16 USB transactions into a transaction batch, or simply a batch. A batch may contain transactions for full-speed (FS: 12 Mbit/sec) and low-speed (LS: 1.5 Mbit/sec) USB devices, of four types of endpoints (control, bulk, interrupt and isochronous) and all transaction types (SETUP, IN and OUT). Compared with other USB host controller designs, batch processing is a very important and unique feature of the UHC124. Our software/hardware co-design overcomes the serious shortcomings of other embedded USB host controller designs that require an interrupt upon completion of every USB transaction. These defficient designs: * result in significant loss of USB bus bandwidth as the invocation (interrupt latency time) and execution of the interrupt service routine (ISR), (or of certain portion of the ISR at the minimum,) cannot overlap with USB bus TransDimension Inc. -- Proprietary 2
Product Brief
TransDimension UHC124
activity. This problem is more obvious and damaging when data packet sizes are small and spontaneous, which is typical for many embedded USB host applications, making double buffering impractical. * waste MCU's time due to processor/RTOS overhead with frequent ISR invocation and execution. With its batch processing capability, a single register write to the UHC124 can dispatch altogether up to 16 transactions, and a single interrupt is generated only after the completion of all of them. The system throughput is therefore significantly improved maximizing the bandwidth on the USB. At the same time, the number of interrupts to the MCU is greatly reduced, saving processor resources for non-USB activities. Double Buffering: Double buffering, and its more general form circular buffering, are effective ways to improve the USB system throughput. The UHC124 supports dual port memory access to its entire addressing space (control registers, CM and DM). Together with its batch processing capability, double buffering becomes attractive even for transactions with small data packets. Root Hub: The UHC124 employs a fully qualified, market proven 4-port USB hub. Analog USB transceivers are built-in for all four downstream ports. Power-on and over-current circuits are presented individually for each port. External Crystal/Oscillator: A PLL (Phase Locked Loop) is integrated on-chip to generate, from a single 6 MHz crystal or crystal oscillator, the 48 MHz, 12 MHz and 6 MHz clock signals required by the UHC124 internal circuitry minimizing EMI. UHCI and OHCI: The UHC124 is fully compliant with USB Specification 2.0 (for full speed and low speed operation). However, it is not a Universal Host Controller Interface/Open Host Controller Interface (UHCI/OHCI) based device because it is not intended for the PCI bus. OEMs may develop or license, a Host Controller Driver (HCD) providing a software interface that appears to the rest of the USB host stack as if there were a UHCI or an OHCI compliant host controller. System Suspend and Resume: Under the control of user software, the UHC124 may bring the USB system into suspend state, as dictated by USB specification. While the oscillator for the UHC124 is still running, all USB bus activities, including SOF generation, are stopped. The system may be brought out of the suspend state by user software, or by a remote wakeup originating from a downstream USB device. Power Saving Mode: Under the control of user software, the UHC124 may enter the power saving mode, in which all internal clocks are stopped, and the PLL is disabled. A small quiescent current (about 200 uA) is consumed by the UHC124. The UHC124 is reactivated by a hardware reset. Software Support: TransDimension is a leader in the embedded market space, bringing both software and silicon to its customers. USB Host Stack, device drivers for most products, and interface code to the UHC124 for numerous RTOS' are available via our wholly owned subsidiary, SoftConnex Technologies, Inc. The products are geared towards mobile and post-PC products, including mobile phone, palmtop PC, PDA, set top box, home gateway, and Internet appliances. TransDimension provides development and support packages and a wide spectrum of USB host software support in C source code to reduce development cost and time to market for its customers. USB Stack software for various real-time operating systems and device drivers for most mobile and post-PC products, as well as required interface code between the USB stack and the silicon are available by contacting your local TransDimension representative. OEMs may license from TransDimension, as part of the UHC124 Development Kit, an OS-independent UHC124 Programming Interface Library, supporting direct UHC124 operation and efficient USB host control independent of any RTOS. The UHC124 USB Host Controller Exerciser allows an OEM to quickly evaluate, and to develop applications for the UHC124 to operate on USB devices.
TransDimension Inc. -- Proprietary
3
TransDimension UHC124 Pin Description
The UHC124 is delivered in a 64-pin LQFP package:
Product Brief
Pin#
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
Pin Name
VDD A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 MODE /CS VSS OSC1 OSC2 LPF VDD TEST0 TEST1 TEST2 TEST3 /OC1 /OC2 /OC3 /OC4 /PO1 /PO2 /PO3 /PO4 VDD DP1 DM1
Pin Type
Power In In In In In In In In In In In In In In Ground In Out Passive Power Bidir Bidir Bidir Bidir In In In In Out Out Out Out Power Bidir Bidir
Pin Description
3.3V Power Supply. All four VDD pins must be connected. Address bus: bit 0 (least significant bit). Address bus: bit 1. Address bus: bit 2. Address bus: bit 3. Address bus: bit 4. Address bus: bit 5. Address bus: bit 6. Address bus: bit 7. Address bus: bit 8. Address bus: bit 9. Address bus: bit 10. Address bus: bit 11. Memory Access Mode. MODE = 1: Non-multiplexed memory access. MODE = 0: Multiplexed memory access with auto-incremented address. Chip Select: active low. Ground. All four pins must be connected. Oscillator Input: input to the inverting oscillator amplifier. Oscillator Output: output of the inverting oscillator amplifier. PLL Filter: connecting to a passive RC network. 3.3V Power Supply. All four pins must be connected. Test Signal I/O: used only for factory testing; working in output mode during normal operation. Test Signal I/O: used only for factory testing; working in output mode during normal operation. Test Signal I/O: used only for factory testing; working in output mode during normal operation. Test Signal I/O: used only for factory testing; working in output mode during normal operation. Over Current condition input for Port 1; active low. Over Current condition input for Port 2; active low. Over Current condition input for Port 3; active low. Over Current condition input for Port 4; active low. Power On Switch for Port 1; active low. Power On Switch for Port 2; avtive low. Power On Switch for Port 3; activel low. Power On Switch for Port 4; activel low. 3.3V Power Supply. All four pins must be connected. Port 1 Differential Data (+) for USB I/O. Port 1 Differential Data (-) for USB I/O. TransDimension Inc. -- Proprietary 4
Product Brief
TransDimension UHC124
Ground Bidir Bidir Bidir Bidir Bidir Bidir Bidir Bidir Bidir Bidir Bidir Power Ground Bidir Bidir Bidir Bidir In In In In In In In Ouput In In Ground Ground. All four pins must be connected. Port 2 Differential Data (+) for USB I/O. Port 2 Differential Data (-) for USB I/O. Port 3 Differential Data (+) for USB I/O. Port 3 Differential Data (-) for USB I/O. Port 4 Differential Data (+) for USB I/O. Port 4 Differential Data (-) for USB I/O. Test Signal I/O: used only for factory testing; working in output mode during normal operation. Data bus: Bit 0. Data bus: Bit 1. Data bus: Bit 2. Data bus: Bit 3. 3.3V Power Supply. All four pins must be connected. Ground. All four pins must be connected. Data bus: Bit 4. Data bus: Bit 5. Data bus: Bit 6. Data bus: Bit 7. Hardware Reset: resets entire USB system; active low. Bus Write Strobe: active low. Bus Read Strobe: active low. Test Mode Select: used only for factory testing; connect to VSS for normal operation. Test Mode Select: used only for factory testing; connect to VSS for normal operation. Test Mode Select: used only for factory testing; connect to VSS for normal operation. Test Mode Select: used only for factory testing; connect to VSS for normal operation. Interrupt: generated for microprocessor; active low. Address/Data Select: see description of Pin MODE; When MODE = 1, this pin has no effect, and it should be tied to VSS for noise immunity. Voltage Reference: for built-in power on reset (POR), connect to VSS (ground) for normal operation. Ground. All four pins must be connected.
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
VSS DP2 DM2 DP3 DM3 DP4 DM4 TEST4 D0 D1 D2 D3 VDD VSS D4 D5 D6 D7 /RESET /WR /RD TMS0 TMS1 TMS2 TMS3 /INT ADS GNDP VSS
TransDimension Inc. -- Proprietary
5
TransDimension UHC124 Package (64 pin LQFP)
TEST4
Product Brief
DM4
DM3
DM2
VDD
DM1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
V SS D4 D5 D6 D7 /RESET /WR /RD TMS0 TMS1 TMS2 TMS3 /INT ADS GNDP V SS
VDD
33 32 31 30 29 28 27 26 25 24 23 22 21
DP4
DP3
DP2
VSS
DP1
D3
D2
D1
D0
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
/PO 4 /PO 3 /PO 2 /PO 1 /OC4 /OC3 /OC2 /OC1 TEST 3 TEST 2 TEST 1 TEST 0 V DD LPF OSC2 OSC1
56579A 56579A
20 19 18 17
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VDD
Figure 2. UHC124 Pinout - 64 pin LQFP (Top View)
For additional information, contact your TransDimension Sales Representative: INTERNET: E-MAIL: Headquarters/ North America : Japan: Europe: http://www.transdimension.com sales@transdimension.com, techsupport@transdimension.com TransDimension Inc., 2 Venture, Irvine, CA 92618. Tel. (949) 727-2020, FAX (949) 727-3232 TransDimension Inc., OYA Bldg. 5, 3 Chome-9-6, Nishishinjuku, Shinjuku-ku, Tokyo, Japan. Tel. +81 (3) 5308 7525, FAX +81 (3) 5308 7526 Masanori Sugane, e-mail: sugane@transdimension.com TransDimension Inc., 7 The Orchard, Hilton, Derbyshire, UK, DE65 5JF. Tel. +44 1283 730045, FAX +44 1283 730651 Neil Huntingdon, e-mail: nhuntingdon@transdimension.com
WorldWide Reps.: See detailed listing for your area TransDimension representatives by viewing http://www.transdimension.com ________________________________________________________________________________________________________________________________________
THE DEVICE AND ITS DOCUMENTATION ARE PROVIDED "AS IS". TRANSDIMENSION HEREBY DISCLAIMS ALL WARRANTIES, EXPRESS, STATUTORY AND IMPLIED, APPLICABLE TO THE SOFTWARE AND ITS DOCUMENTATION AND ANY RELATED PRODUCTS, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT OR FITNESS FOR A PARTICULAR PURPOSE. TRANSDIMENSION ASSUMES NO LIABILITY FOR ANY ACT OR OMISSION OF LICENSEE. IN NO EVENT SHALL TRANSDIMENSION BE LIABLE FOR DIRECT, SPECIAL, INDIRECT, INCIDENTAL, PUNITIVE, EXEMPLARY OR CONSEQUENTIAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOSS OF PROFITS OR REVENUE, LOSS OF PRODUCTS, DATA OR ANY ASSOCIATED EQUIPMENT, COST OF CAPITAL, COST OF SUBSTITUTED EQUIPMENT OR PARTS, FACILITIES OR SERVICES, DOWN-TIME OR LABOR COSTS, EVEN IF TRANSDIMENSION HAS BEEN ADVISED OF THE POSSIBILITY THEREOF. The device and any related products are not designed, authorized, or warranted to be suitable for use in life-support devices or systems or other critical applications. Any such use and subsequent liabilities that may arise from such use are totally the responsibilities of the Licensee. Copyright (c) 2002, TransDimension Inc., All rights reserved. All product names are trademarks or registered trademarks of their respective owners.
All Rights Reserved Printed in U.S.
January 2002
MU1012-Rev. 1.3
TransDimension Inc. -- Proprietary
MODE
/CS
VSS
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
6

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