AN2135SC Cypress Semiconductor Corp, AN2135SC Datasheet - Page 194
AN2135SC
Manufacturer Part Number
AN2135SC
Description
IC MCU 8051 8K RAM 24MHZ 44QFP
Manufacturer
Cypress Semiconductor Corp
Series
EZ-USB®r
Datasheet
1.AN2131SC.pdf
(334 pages)
Specifications of AN2135SC
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
428-1308
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This section describes the EZ-USB registers in the order they appear in the EZ-USB mem-
ory map. The registers are named according to the following conventions.
Most registers deal with endpoints. The general register format is DDDnFFF, where:
DDD is endpoint direction, IN or OUT with respect to the USB host.
n
FFF
Examples:
EZ-USB TRM v1.9
12.1
•
•
•
is the endpoint number, where:
•
•
•
is the function, where:
•
•
•
•
•
•
IN7BC is the Endpoint 7 IN byte count.
OUT07IRQ is the register containing interrupt request bits for OUT endpoints 0-7.
INISOVAL contains valid bits for the isochronous IN endpoints (EP8IN-EP15IN).
Introduction
“07” refers to endpoints 0-7 as a group.
0-7 refers to each individual BULK/INTERRUPT/CONTROL endpoint.
“ISO” indicates isochronous endpoints as a group.
CS is a control and status register
IRQ is an Interrupt Request bit
IE is an Interrupt Enable bit
BC, BCL, and BCH are byte count registers. BC is used for single byte counts,
and BCL/H are used as the low and high bytes of 16-bit byte counts.
DATA is a single-register access to a FIFO.
BUF is the start address of a buffer.
12 EZ-USB Registers
Chapter 12. EZ-USB Registers
Page 12-1
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