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PDF USB82640 Data sheet ( Hoja de datos )
| Número de pieza | USB82640 | |
| Descripción | Automotive USB 2.0 Hub and Flash Media Card Controller Combo | |
| Fabricantes | Microchip | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de USB82640 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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USB82640
Automotive USB 2.0 Hub and Flash Media Card
Controller Combo
Highlights
• AEC-Q100 compliance
- Microchip’s parts are tested to meet or
exceed the requirements of the AEC-Q100
automotive qualification standards
• PortMap
- Flexible port mapping and port disable
sequencing supports multiple platform
designs
• PortSwap
- Programmable USB differential-pair pin loca-
tions ease PCB design by aligning USB sig-
nal traces directly to connectors
• PHYBoost
- Programmable USB transceiver drive
strength for recovering signal integrity due to
compromised system environment
Target Applications
• Automotive integrated head unit
• Automotive breakout box
• Automotive media player dock
• Automotive consumer connectivity ports
• Portable device charging via USB
• Rear seat infotainment access
Key Benefits
• Single-chip compound device: USB 2.0 hub con-
troller with two hi-speed downstream ports and a
flash media controller
• Hub and flash media reader/writer configuration
from a single source:
- Configuration of internal code using an exter-
nal I2CTM EEPROM or SPI Flash
- Execution of external code from SPI Flash
- Support of custom vendor, product, and lan-
guage IDs when using an external EEPROM
• Full power management with individual or ganged
power control of each downstream port
• Transaction Translator (TT) in the hub supports
operation of FS and LS peripherals
• Single 24 MHz crystal support
• Integrated regulator for 1.8 V core operation
• External regulator mode for 1.8 V core operation
• RoHS compliant packages
- 48-pin (7x7 mm²) VQFN
• Temperature ranges:
- 48VQFN: -40 ºC to +85 ºC
2010-2015 Microchip Technology Inc.
DS60001312A-page 1
1 page  
USB82640
1.1 Device Features
1.1.1 HARDWARE FEATURES
• Single-chip hub and flash media controller
• USB82640 supports the temperature range of -40 °C to +85 °C
• Transaction Translator (TT) in the hub supports operation of FS and LS peripherals
• Full power management with individual or ganged power control of each downstream port
• Optional support for external firmware access via SPI interface
• Code execution via SPI ROM which must meet the following qualifications:
- 30 MHz or 60 MHz operation support
- Single bit or dual bit mode support
- Mode 0 or mode 3 SPI support
Compliance with the following flash media card specifications:
• Secure Digital 2.0/MultiMediaCard 4.2
- SD 2.0, SD-HS, SD-HC
- TransFlashTM and reduced form factor media
- 1/4/8 bit MMC 4.2
- Supports storage addressability of up to 2 TB
• Memory Stick 1.43
• Memory Stick Pro Format 1.02
• Memory Stick Pro-HG Duo Format 1.01
- Memory Stick, MS Duo, MS-HS, MS Pro-HG, MS Pro
• MS Duo 1.10
• Supports internal regulator for 1.8 V core operation
• Supports external regulator for 1.8 V core operation
1.1.2 CONFIGURABLE FEATURES
Default configuration is implemented in the USB82640 following a reset. The USB82640 may also be configured by an
external I2C EEPROM or external SPI ROM flash where the following features are supported.
• Customizable vendor ID, product ID, and device ID
• 12-hex digits maximum for the serial number string
• 29-character manufacturer ID and product strings for flash media reader/writer
• Compound device support on a port-by-port basis
- a port is permanently hardwired to a downstream USB peripheral device
• Select over-current sensing and port power control on an individual or ganged (all ports together) basis to match
the OEM’s choice of circuit board component selection
• Port power control and over-current detection/delay features
• Configure the delay time for filtering the over-current sense inputs
• Configure the delay time for turning on downstream port power
• Bus- or self-powered selection
• Hub port disable of non-removable configurations
• Flexible port mapping and disable sequencing supports multiple platform designs
• Programmable USB differential-pair pin location selection eases PCB layout by aligning USB signal lines directly
to connectors
• Programmable USB signal drive strength improves USB signal integrity using 4 levels of signal drive strength
• Indicate the maximum current that the 2-port hub consumes from the USB upstream port
• Manage the maximum current required for the hub controller
2010-2015 Microchip Technology Inc.
DS60001312A-page 5
5 Page 
USB82640
TABLE 5-1: USB82640 PIN DESCRIPTIONS (CONTINUED)
Symbol
MS_D[7:0]
USBUP_DM
USBUP_DP
USBDN_DM
[3:2]
USBDN_DP
[3:2]
PRTCTL[3:2]
VBUS_DET
RBIAS
XTAL1 (CLKIN)
48-Pin
VQFN
20
19
17
18
32
30
23
24
43
42
3
1
4
2
7
6
39
47
45
Buffer
Type
Description
I/O12PD
MS System Data In/Out
These pins are the bi-directional data signals for
the MS device. In serial mode, the most signifi-
cant bit (MSB) of each byte is transmitted first
by either MSC or MS device on MS_D0.
MS_D0, MS_D2, and MS_D3 have weak pull-
down resistors. MS_D1 has a pull down resistor
if in parallel mode, otherwise it is disabled. In 4-
or 8-bit parallel modes, there is a weak pull-
down resistor on all MS_D7 - MS_D0 signals.
USB Interface
I/O-U
I/O-U
USB Bus Data
These pins connect to the upstream USB bus
data signals (host port or upstream hub).
USBUP_DM and USBUP_DP can be swapped
using the PortSwap feature.
USB Bus Data
These pins connect to the downstream USB bus
data signals and can be swapped using the
PortSwap feature.
I/OD12PU
USB Power Enable
As an output, these pins enables power down-
stream USB peripheral devices. See Section
5.3, "Port Power Control" for diagram and usage
instructions.
As an input, when the power is enabled, these
pins monitor the over-current condition. When
an over-current condition is detected, these pins
turn the power off.
I Detect Upstream VBUS Power
The Microchip hub monitors VBUS_DET to
determine when to assert the internal D+ pull-up
resistor (signaling a connect event).
When designing a detachable hub, connect this
pin to the VBUS power pin of the USB port that
is upstream of the hub.
For self-powered applications with a perma-
nently attached host, this pin should be pulled
up, typically to VDD33.
VBUS is a 3.3 V input. A resistor divider must be
used when connecting to 5 V of USB power.
I-R USB Transceiver Bias
A 12.0 kΩ, ±1.0% resistor is attached from VSS
to this pin in order to set the transceiver's inter-
nal bias currents.
ICLKx
24 MHz Crystal Input/External Clock Input
This pin can be connected to one terminal of the
crystal or it can be connected to an external
24 MHz clock when a crystal is not used.
If Pins not Used
Connection
Leave open
Leave open
Leave open
Pull up.
Note:
Pull down will
disable entire
USB82640 chip.
N/A
N/A
2010-2015 Microchip Technology Inc.
DS60001312A-page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet USB82640.PDF ] | |
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