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參數(shù)資料
| 型號： | ADSP-2192M |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | DSP Microcomputer |
| 中文描述： | DSP微機 |
| 文件頁數(shù)： | 18/40頁 |
| 文件大小： | 1307K |
| 代理商： | ADSP-2192M |
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ADSP-2192M
–18–
REV. 0
Configuration 0, 1, and 2 Device Definition
FIXED ENDPOINTS
CONTROL ENDPOINT 0
Type: Control
Dir: Bidirectional
Maxpacketsize: 8
BULK OUT ENDPOINT 1, 2, 3 = Used for code
download to DSP
Type: Bulk
Dir: OUT
Maxpacketsize: 64
PROGRAMMABLE ENDPOINTS: 4 5 6 7 8 9 10 11
Programmable in:
Type: via USB Endpoint Description Register
Direction: via USB Endpoint Description Register
Maxpacket size: via USB Endpoint Description Register
Memory Allocation: via DSP Memory Buffer Base Addr,
DSP Memory Buffer Size, DSP Memory Buffer RD
Pointer Offset, DSP Memory Buffer Write Pointer Offset
Registers
Note: The GENERIC endpoints are shared between all
interfaces.
Endpoint 0 Definition
In addition to the normally defined USB standard device
requests, the following vendor specific device requests are
supported with the use of EP0. These requests are issued from
the host driver via normal SETUP transactions on the USB.
USB MCU Code Download
USB MCUCODE is a three-stage control transfer with an OUT
data stage. Stage 1 is the SETUP stage, stage 2 is the data stage
involving the OUT packet, and stage 3 is the status stage. The
length of the data stage is determined by the driver and is specified
by the total length of the MCU code to be downloaded. See
Table 18
for details about the USB MCUCODE (code
download) fields.
USB REGIO (Write)
Address 15–15 = 1 indicates a write to the MCU register space;
Address 15–15 = 0 indicates a write to the DSP register space.
When accessing DSP register space, the MCU must write the
data to be written into the USB Register I/O Data register and
Table 14. CONFIG DEVICE Configuration Descriptor
Offset
Field
Description
Value
0
1
2
3
4
5
6
7
8
bLength
bDescriptorType
wTotalLength (L)
wTotalLength (H)
bNumInterfaces
bConfigurationValue
iConfiguration
bmAttributes
MaxPower
Descriptor Length = nine bytes
Descriptor Type = Configuration
Total Length (L)
Total Length (H)
Number of Interfaces
Configuration Value
Index of string descriptor (None)
Bus powered, no wake-up
Max power = 500 mA
0x09
0x02
0x12
0x00
0x01
0x01
0x00
0x80
0xFA
Table 15. CONFIG DEVICE String Descriptor Index 0
Offset
Field
Description
Value
0
1
2
bLength
bDescriptorType
wLANGID[0]
Descriptor Length = 4 bytes
Descriptor Type = String
LangID = 0409 (US English)
0x04
0x03
0x0409
Table 16. CONFIG DEVICE Descriptor Index 1 (Manufacturer)
Offset
Field
Description
Value
0
1
2–19
bLength
bDescriptorType
bString
Descriptor Length = 20 bytes
Descriptor Type = String
ADI
0x14
0x03
Table 17. CONFIG DEVICE String Descriptor Index 2 (Product)
Offset
0
1
2–31
Field
bLength
bDescriptorType
bString
Description
Descriptor Length = 34 bytes
Descriptor Type = String
Analog Devices USB Device
Value
0x22
0x03
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