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參數(shù)資料
| 型號(hào)： | SAB-C541U-1EP |
| 廠商： | SIEMENS A G |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-Bit CMOS Microcontroller |
| 中文描述： | 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PDIP52 |
| 文件頁(yè)數(shù)： | 29/65頁(yè) |
| 文件大?。?/td> | 427K |
| 代理商： | SAB-C541U-1EP |
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Semiconductor Group
29
1997-10-01
C540U
C541U
USB Module
The USB module in the C540U/C541U handles all transactions between the serial USB bus and the
internal (parallel) bus of the microcontroller. The USB module includes several units which are
required to support data handling with the USB bus : the on-chip USB bus transceiver, the USB
memory with two pages of 128 bytes each, the memory management unit (MMU) for USB and CPU
memory access control, the UDC device core for USB protocol handling, the microcontroller
interface with the USB specific special function registers and the interrupt control logic. A clock
generation unit provides the clock signal for the USB module for full speed and low speed USB
operation.
Figure 13
shows the block diagram of the functional units of the USB module with their
interfaces.
Figure 13
USB Module Block Diagram
MCB03380
Pin
Pin
Pin
Pin
XTAL1
XTAL2
D+
D-
USB
Bus
Osc.
12 MHz
(On-chip)
Transceiver
x 4
PLL
2
48 MHz
6 MHz
USB
Memory
Page 0
(128 x 8)
F
00
00
Data
Data
Control
USB Memory
Management
MMU
Interrupt Generation
SFR
Addr.
11
Core
Device
USB
MCU
Interface
Module
USB
Internal
Bus
Page 1
(UDC)
Control
H
H
H
7
7
H
F
Address
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