EP9301-IQZ Cirrus Logic Inc, EP9301-IQZ Datasheet - Page 446
![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
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11
11-6
Universal Serial Bus Host Controller
EP93xx User’s Guide
11.2.3 Host Controller Driver Responsibilities
11.2.3.1 Host Controller Management
11.2.3.2 Bandwidth Allocation
This section summarizes the Host Controller Driver (HCD) responsibilities.
The Host Controller Driver manages the operation of the Host Controller (HC). It does so by
communicating directly to the operational registers in the Host Controller and establishing the
interrupt Endpoint Descriptor list head pointers in the HCCA.
The Host Controller Driver maintains the state of the HC, list processing pointers, list
processing enables, and interrupt enables.
All access to the USB is scheduled by the Host Controller Driver. The Host Controller Driver
allocates a portion of the available bandwidth to each periodic endpoint. If sufficient
bandwidth is not available, a newly-connected periodic endpoint will be denied access to the
bus.
Interrupt
Head
Pointers
16
24
20
12
28
18
10
26
22
14
30
17
25
21
13
29
19
11
27
23
15
31
0
8
4
2
6
1
9
5
3
7
Figure 11-5. Sample Interrupt Endpoint Schedule
32
Copyright 2007 Cirrus Logic
16
Endpoint Poll Interval (ms)
Interrupt Endpoint Descriptors
8
4
2
1
DS785UM1
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