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MPC8280 bảng dữ liệu(PDF) 941 Page - Freescale Semiconductor, Inc

tên linh kiện MPC8280
Giải thích chi tiết về linh kiện  PowerQUICC??II Family Reference Manual
PDF  1386 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC8280 bảng dữ liệu(HTML) 941 Page - Freescale Semiconductor, Inc

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Fast Communications Controllers (FCCs)
MPC8280 PowerQUICC II Family Reference Manual, Rev. 1
Freescale Semiconductor
30-3
Figure 30-1. FCC Block Diagram
30.2
General FCC Mode Registers (GFMR
x)
Each FCC contains a general FCC mode register (GFMRx) that defines common FCC options and selects
the protocol to be run. The GFMRx are read/write registers cleared at reset. Figure 30-2 shows the GFMR
format.
Table 30-1. Internal Clocks to CPM Clock Frequency Ratio
Mode
Internal Clock: CPM clock frequency ratio
HDLC 1 bit
1:4
Transparent 1 bit
1:4
HDLC nibble
1:6
Fast Ethernet
1:3 (1:3.5 preferred)
ATM
1:3 (1:3.5 preferred)
Control
Registers
Shifter
Shifter
Delimiter
Clock
Generator
Delimiter
Decoder
Encoder
Receive
Control
Unit
Transmit
Control
Unit
Receive
Data
FIFO
Transmit
Data
FIFO
Modem Lines
Modem Lines
60x Bus
Peripheral Bus
TCLK
RCLK
Internal Clocks
RXD
TXD



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