EP9315-IBZ Cirrus Logic Inc, EP9315-IBZ Datasheet - Page 735

• Manufacturer Part Number: EP9315-IBZ
• Description: 32-Bit Microcontroller IC
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9315-IBZ

• Controller Family/series: (ARM9)
• Core Size: 32 Bit
• A/d Converter: 12 Bits
• Supply Voltage: 3.3V
• No. Of I/o Pins: 65
• Package / Case: 352-PBGA
• Clock Frequency: 200MHz
• Core Processor: ARM9
• Speed: 200MHz
• Connectivity: EBI/EMI, EIDE, Ethernet, I²C, IrDA, Keypad/Touchscreen, PCMCIA, SPI, UART/USART, USB
• Peripherals: AC'97, DMA, I&sup2:S, LCD, LED, MaverickKey, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Data Converters: A/D 8x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: EDB9315A-Z
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1144 - KIT DEVELOPMENT EP9315 ARM9
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 598-1263

DS785UM1
24.2.1.3 Dynamic Programming (PWM is Running) Example
24.2.2 Programming Rules
24.3 Registers
Note: Updates will take place at the end of the PWM cycle. Order of programming of the
Note: All pwmout outputs will drive a logical “0” during reset. Coming out of reset, it will continue
1. Because the user can not tell the state of the PWM between cycles, care must be taken
2. Program PWMxTermCnt and PWMxDutyCycle with values that meet the specification.
3. When PWM is stopped (PWM_EN = 0), it does not stop immediately but waits for the
while programming on the fly (while the PWM is running). To insure proper operation
observe the following rules to preserve the relationship of PWMxDutyCycle to
PWMxTermCnt:
end of the current PWM cycle and then stops.
PWMxTermCnt and PWMxDutyCycle are updated.
Program PWMxTermCnt (new) first then PWMxDutyCycle (new)
Program PWMxDutyCycle (new) first then PWMxTermCnt (new)
If the rules “A” and “B” are not followed, a duty cycle of 100% may result until both
A. If PWMxTermCnt (new) > PWMxTermCnt (current):
B. If PWMxTermCnt (new) < PWMxTermCnt (current):
Terminal Count and Duty Cycle is important. See
to drive a logical “0”, and the PWM will be in halt mode.
0x8091_000C
0x8091_002C
0x8091_0000
0x8091_0004
0x8091_0008
0x8091_0020
0x8091_0024
0x8091_0028
Address
Program DC value with 131
Program TC value with 659
PWM0DutyCycle
PWM1DutyCycle
PWM0TermCnt
PWM1TermCnt
PWM0Invert
PWM1Invert
Register
PWM0En
PWM1En
Step
Table 24-2. Dynamic Programming Steps
Copyright 2007 Cirrus Logic
Table 24-3. PWM Registers Map
PWM0 Terminal Count
PWM1 Terminal Count
PWM0 Duty Cycle
PWM1 Duty Cycle
PWM0 Enable
PWM1 Enable
PWM0 Invert
PWM1 Invert
Name
Section 24.2.2 on page 24-3
PWMxDutyCycle
PWMxTermCnt
Register
Reset Value
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
Pulse Width Modulator
Access
EP93xx User’s Guide
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0x0293
0x0081
Value
.
Size
16
16
16
16
16
16
16
16
24-3
24