EP9301-IQZ Cirrus Logic Inc, EP9301-IQZ Datasheet - Page 617
![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: 617 of 824
- Download datasheet (13Mb)
DS785UM1
17.5.4 IrDA Integration Information
17.5.4.1 Enabling Infrared Modes
17.5.4.2 Clocking Requirements
There are four clocks, PCLK, MIRCLK, FIRCLK, and UARTCLK.
Version 1.1 of the Infrared Data Association standard indicates the following:
The worst case ratio that can be supported for PCLK:FIRCLK is a ratio of 1:5. The maximum
that PCLK can be is 66 MHz, therefore:
Any frequencies outside the above range are not supported and will result in incorrect
behavior of the FIR mode of the infrared peripheral.
Since MIRCLK is 18.432 MHz, PCLK can be as low as 3.68 MHz and as high as 66 MHz. Any
PCLK frequency in this range is allowable. Any PCLK frequencies outside the range are not
supported and will result in incorrect behavior of the MIR mode of the infrared peripheral,
therefore:
The tolerance of UARTCLK is defined by the UART to which it is connected.
UARTCLK frequency must accommodate the desired range of baud rates:
The frequency of UARTCLK must also be within the required error limits for all baud rates to
be used.
• FIRCLK must by 48.0 MHz with a tolerance of 0.01%.
• MIRCLK must be 18.432 MHz with a tolerance of 0.1%.
Disabled
UART2
Mode
MIR
SIR
FIR
DeviceCfg Register
U2EN
0
1
1
x
x
F
UARTCLK
F
UARTCLK
1
-- - F
5
3.68MHz
IonU2
Table 17-5. UART2 / IrDA Modes
FIRCLK
Copyright 2007 Cirrus Logic
0
1
1
1
x
MAX
≤
MIN
32
<
≤
≥
F
F
SIREn
×
UART2Ctrl Register
32 baudrate
PCLK
PCLK
65536 b
0
0
1
0
0
×
<
≤
66.0MHz
66.0MHz
× audrate
UARTE
0
1
1
0
0
MAX
MIN
IrEnable Register
EN[1]
0
0
0
1
1
EP93xx User’s Guide
EN[0]
0
0
1
0
1
17-21
IrDA
17
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