AN2136SC Cypress Semiconductor Corp, AN2136SC Datasheet - Page 88

• Manufacturer Part Number: AN2136SC
• Description: IC MCU 8051 8K RAM 24MHZ 44QFP
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB®r

Specifications of AN2136SC

• Applications: USB Microcontroller
• Core Processor: 8051
• Program Memory Type: ROMless
• Controller Series: AN213x
• Ram Size: 8K x 8
• Interface: I²C, USB
• Number Of I /o: 8
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1309

The 8051 can ReNumerate
an isochronous endpoint’s bandwidth requests by trying various descriptor values and
ReNumerating.
Tables 5-9 through 5-19 show the descriptor data built into the EZ-USB core. The tables
are presented in the order that the bytes are stored.
The Device Descriptor specifies a MaxPacketSize of 64 bytes for endpoint 0, contains
Cypress Semiconductor Vendor, Product and Release Number IDs, and uses no string
indices. Release Number IDs (XX and YY) are found in individual Cypress Semiconductor
data sheets. The EZ-USB core returns this information response to a “Get_Descriptor/
Device” host request.
EZ-USB TRM v1.9
5.10
5.11
Multiple ReNumerations
Default Descriptor
Offset
10
12
13
14
15
16
17
11
0
1
2
3
4
5
6
7
8
9
bLength
bDescriptorType
bcdUSB (L)
bcdUSB (H)
bDeviceClass
bDeviceSubClass
bDeviceProtocol
bMaxPacketSize0
idVendor (L)
idVendor (H)
idProduct (L)
idProduct (H)
bcdDevice (L)
bcdDevice (H)
iManufacturer
iProduct
iSerialNumber
bNumConfigurations Number of Configurations in this Interface = 1
Field
Table 5-9. USB Default Device Descriptor
anytime. Once use for this capability might be to fine tune
Length of this Descriptor = 18 bytes
Descriptor Type = Device
Device Class (FF is Vendor-Specific)
Device Sub-Class (FF is Vendor-Specific)
Device Protocol (FF is Vendor-Specific)
Maximum Packet Size for EP0 = 64 bytes
Vendor ID (L)
Product ID (L)
Product ID (H)
Device Release Number (BCD,L) (see individual data sheet)
Manufacturer Index String = None
Product Index String = None
Serial Number Index String = None
USB Specification Version 1.00 (L)
USB Specification Version 1.00 (H)
Vendor ID (H)
Device Release Number (BCD,H) (see individual data sheet)
Chapter 5. EZ-USB CPU
Cypress Semiconductor = 0547H
EZ-USB = 2131H
Description
Value
YYH
12H
00H
01H
FFH
FFH
FFH
47H
31H
21H
21H
00H
00H
00H
01H
40H
05H
01H
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