AN2136SC Cypress Semiconductor Corp, AN2136SC Datasheet - Page 94

• 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

Interface 0, alternate setting 1 has six isochronous endpoints with maximum packet sizes
of 16 bytes. This is a low bandwidth setting.
Interface 0, alternate setting 2 has thirteen endpoints, whose individual descriptors follow
the interface descriptor. Alternate setting 2 differs from alternate setting 1 in the maxi-
mum packet sizes of its interrupt endpoint and two of its isochronous endpoints (EP8IN
and EP8OUT).
Alternate setting 2 for the interrupt 1-IN increases the maximum packet size for the inter-
rupt endpoint to 64.
EZ-USB TRM v1.9
Table 5-17. USB Default Interface 0, Alternate Setting 1, Interrupt Endpoint Descriptor
Offset
Offset
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
bLength
bDescriptor Type
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
bLength
bDescriptorType
bEndpointAddress
bmAttributes
wMaxPacketSize (L)
wMaxPacketSize (H) Maximum Packet Size - High
bInterval
Table 5-16. USB Default Interface 0, Alternate Setting 2 Descriptor
Field
Field
Length of the Interface Descriptor
Descriptor Type = Interface
Zero-based Index of this Interface = 0
Alternate Setting Value = 2
Number of Endpoints in this Interface (Not Counting EPO) = 13
Interface Class = Vendor Specific
Interface Sub-class = Vendor Specific
Interface Protocol = Vendor Specific
Length of this Endpoint Descriptor
Descriptor Type = Endpoint
XFR Type = INT
Index to String Descriptor for this Interface = None
Endpoint Direction (1 is in) and Address = IN1
Maximum Packet Size = 64 Bytes
Polling Interval in Milliseconds = 10 ms
Chapter 5. EZ-USB CPU
Description
Description
Value
Value
09H
0DH
FFH
FFH
FFH
00H
07H
00H
0AH
04H
00H
02H
05H
81H
03H
40H
Page 5-19