EP9312-CB Cirrus Logic Inc, EP9312-CB Datasheet - Page 736

• Manufacturer Part Number: EP9312-CB
• Description: System-on-Chip Processor
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9312-CB

• Peak Reflow Compatible (260 C): No
• A/d Converter: 12 Bits
• Leaded Process Compatible: No
• No. Of I/o Pins: 65
• Package / Case: 352-BGA
• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, EIDE, Ethernet, I²C, IrDA, Keypad/Touchscreen, 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: 0°C ~ 70°C
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: No
• Other names: 598-1257

24
Register Descriptions
PWMxTermCnt
PWMxDutyCycle
24-4
Pulse Width Modulator
EP93xx User’s Guide
15
15
Address:
Default:
Definition:
Bit Descriptions:
Address:
Default:
Definition:
Note: All undefined register bits will be read as 0.
14
14
13
13
12
12
PWM0TermCnt: 0x8091_0000 - Read/Write
PWM1TermCnt: 0x8091_0020 - Read/Write
0x0000_0000
PWMx Terminal Count
PWM_TC:
PWM0DutyCycle: 0x8091_0004 - Read/Write
PWM1DutyCycle: 0x8091_0024 - Read/Write
0x0000_0000
PWMx Duty Cycle
11
11
10
10
Copyright 2007 Cirrus Logic
9
9
PWMxTermCnt is used to adjust the output frequency of
the PWM. PWMxTermCnt gives the PWM up to 16-bit
resolution.
PWMxTermCnt is double buffered to allow it to be
programed statically (PWM is stopped) or dynamically
(PWM is running).
Programmed dynamically, PWMxTermCnt is updated at
the end of a PWM cycle to prevent any output glitches or
errors. Reading the register reflects what was written to it,
not the state of the counter.
8
8
PWM_DC
PWM_TC
7
7
6
6
5
5
4
4
3
3
2
2
1
1
DS785UM1
0
0