EP9301-IQZ Cirrus Logic Inc, EP9301-IQZ Datasheet - Page 605
![32-Bit Microcontroller IC](/photos/12/23/122383/mfg_ep9301_parts_sml.jpg)
EP9301-IQZ
Manufacturer Part Number
EP9301-IQZ
Description
32-Bit Microcontroller IC
Manufacturer
Cirrus Logic Inc
Series
EP9r
Specifications of EP9301-IQZ
Controller Family/series
(ARM9)
Core Size
32 Bit
A/d Converter
12 Bits
Supply Voltage
3.3V
No. Of I/o Pins
24
Mounting Type
Surface Mount
Operating Temperature Min
-40°C
Package / Case
208-LQFP
Core Processor
ARM9
Speed
166MHz
Connectivity
EBI/EMI, Ethernet, I²C, IrDA, SPI, UART/USART, USB
Peripherals
AC'97, DMA, I²:S, LED, MaverickKey, POR, PWM, WDT
Number Of I /o
19
Program Memory Type
ROMless
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 3.6 V
Data Converters
A/D 5x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Processor Series
EP93xx
Core
ARM920T
Data Bus Width
32 bit
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Details
Other names
598-1250
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 605 of 824
- Download datasheet (13Mb)
DS785UM1
17.4.1.2 Frame Format
MIR uses a flag (reserved bit pattern) to denote the beginning and end of a frame of
information and to synchronize frame transmission. A double flag is used to indicate the start
of a frame and a single flag the end. The flag contains eight bits, which start and end with a
zero and contain six sequential ones in the middle (01111110b). This sequence of six ones is
unique because all data between the start and stop flag is prohibited from having more than
five consecutive ones. Data that violates this rule is altered before transmission by
automatically inserting a zero after five consecutive ones are detected in the transmitted bit
stream. This technique is commonly referred to as “bit stuffing” and is transparent to the user.
The information field within a MIR frame is placed between the start and stop flags, consisting
of an 8 bit address, an optional 8 bit control field, a data field containing any multiple of 8 bits
and a 16 bit cyclic redundancy check (CRC-CCITT). Note that each byte within the address,
control and data fields is transmitted and received LSB first, ending with the byte’s MSB.
However, the CRC is transmitted and received MSB first. The MIR frame format is outlined
below in
Start Flag
0111 1110
8 Bits
Table
17-3.
Start Flag
0111 1110
8 Bits
Figure 17-1. RZ1/NRZ Bit Encoding Example
Address
8 Bits
Table 17-3. MIR Frame Format
Copyright 2007 Cirrus Logic
(optional)
Control
8 Bits
Any multiple
of 8 Bits
Data
CRC-CCITT
16 Bits
Stop Flag
0111 1110
8 Bits
EP93xx User’s Guide
IrDA
17-9
17
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