CY7C65113C-SXCT Cypress Semiconductor Corp, CY7C65113C-SXCT Datasheet - Page 26

• Manufacturer Part Number: CY7C65113C-SXCT
• Description: IC,MICROCONTROLLER,8-BIT,CMOS,SOP,28PIN,PLASTIC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C65113C-SXCT

• Applications: USB Hub/Microcontroller
• Core Processor: M8
• Program Memory Type: OTP (8 kB)
• Controller Series: USB Hub
• Ram Size: 256 x 8
• Interface: I²C, USB
• Number Of I /o: 11
• Voltage - Supply: 4 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Processor Series: CY7C65xx
• Core: M8
• Data Bus Width: 16 bit
• Program Memory Size: 8 KB
• Data Ram Size: 256 B
• Interface Type: I2C
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 11
• Number Of Timers: 1
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: CY3654, CY3654-P03
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: CY3649 - PROGRAMMER HI-LO USB M8428-1339 - KIT LOW SPEED PERSONALITY BOARD
• Lead Free Status / Rohs Status: Details

USB Overview
The USB hardware includes a USB Hub repeater with one
upstream and up to seven downstream ports. The USB Hub
repeater interfaces to the microcontroller through a full-speed
serial interface engine (SIE). An external series resistor of R
must be placed in series with all upstream and downstream USB
outputs in order to meet the USB driver requirements of the USB
specification.The CY7C65113C microcontroller can provide the
functionality of a compound device consisting of a USB hub and
permanently attached functions.
USB Serial Interface Engine (SIE)
The SIE allows the CY7C65113C microcontroller to commu-
nicate with the USB host through the USB repeater portion of the
hub. The SIE simplifies the interface between the microcontroller
and USB by incorporating hardware that handles the following
USB bus activity independently of the microcontroller:
Firmware is required to handle the following USB interface tasks:
USB Enumeration
The internal hub and any compound device function are
enumerated under firmware control. The hub is enumerated first,
followed by any integrated compound function. After the hub is
enumerated, the USB host can read hub connection status to
determine which (if any) of the downstream ports need to be
enumerated. The following is a brief summary of the typical
enumeration process of the CY7C65113C by the USB host. For
a detailed description of the enumeration process, refer to the
USB specification.
In this description, ‘Firmware’ refers to embedded firmware in the
CY7C65113C controller.
Document #: 38-08002 Rev. *F
1. The host computer sends a SETUP packet followed by a
2. Firmware decodes the request and retrieves its Device
3. The host computer performs a control read sequence and
4. After receiving the descriptor, the host sends a SETUP packet
5. Firmware stores the new address in its USB Device Address
6. The host sends a request for the Device descriptor using the
• Bit stuffing/unstuffing
• Checksum generation/checking
• ACK/NAK/STALL
• Token type identification
• Address checking.
• Coordinate enumeration by responding to SETUP packets
• Fill and empty the FIFOs
• Suspend/Resume coordination
• Verify and select DATA toggle values.
DATA packet to USB address 0 requesting the Device de-
scriptor.
descriptor from the program memory tables.
Firmware responds by sending the Device descriptor over the
USB bus, via the on-chip FIFOs.
followed by a DATA packet to address 0 assigning a new USB
address to the device.
Register (for example, as Address B) after the no-data control
sequence completes.
new USB address.
ext
USB Hub
A USB hub is required to support:
These features are mapped onto a hub repeater and a hub
controller. The hub controller is supported by the processor
integrated into the CY7C65113C microcontroller. The hardware
in the hub repeater detects whether a USB device is connected
to a downstream port. The connection to a downstream port is
through a differential signal pair (D+ and D–). Each downstream
port provided by the hub requires external R
each signal line to ground, so that when a downstream port has
no device connected, the hub reads a LOW (zero) on both D+
and D–. This condition is used to identify the “no connect” state.
The hub must have a resistor R
upstream D+ line and V
device.
The hub generates an EOP at EOF1, in accordance with the
USB 1.1 Specification (section 11.2.2, page 234) as well as USB
2.0 specification (section 11.2.5, page 304).
Connecting/Disconnecting a USB Device
A low-speed (1.5 Mbps) USB device has a pull-up resistor on the
D– pin. At connect time, the bias resistors set the signal levels
on the D+ and D– lines. When a low-speed device is connected
to a hub port, the hub sees a LOW on D+ and a HIGH on D–.
This causes the hub repeater to set a connect bit in the Hub Ports
Connect Status register for the downstream port (see Figure 22).
Then the hub repeater generates a Hub Interrupt to notify the
microcontroller that there has been a change in the Hub
downstream status. The firmware sets the speed of this port in
the Hub Ports Speed Register (see Figure ).
A full-speed (12 Mbps) USB device has a pull-up resistor from
the D+ pin, so the hub sees a HIGH on D+ and a LOW on D–. In
this case, the hub repeater sets a connect bit in the Hub Ports
Connect Status register and generates a Hub Interrupt to notify
the microcontroller of the change in Hub status. The firmware
sets the speed of this port in the Hub Ports Speed Register (see
Figure )
7. Firmware decodes the request and retrieves the Device
8. The host performs a control read sequence and Firmware
9. The host generates control reads from the device to request
10.Once the device receives a Set Configuration request, its
11.Following enumeration as a hub, Firmware can optionally
12.The host carries out the enumeration process with this
13.When the host assigns an address to this device, it is stored
• Connectivity behavior: service connect/disconnect detection
• Bus fault detection and recovery
• Full-/Low-speed device support
descriptor from program memory tables.
responds by sending its Device descriptor over the USB bus.
the Configuration and Report descriptors.
functions may now be used.
indicate to the host that a compound device exists (for
example, the keyboard in a keyboard/hub device).
additional function as though it were attached downstream
from the hub.
as the other USB address (for example, Address A).
REG
to indicate it is a full speed USB
UUP
connected between its
CY7C65113C
UDN
resistors from
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