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鍙冩暩(sh霉)璩囨枡
鍨嬭櫉锛� MCF5272VM66R2
寤犲晢锛� Freescale Semiconductor
鏂囦欢闋佹暩(sh霉)锛� 150/544闋�
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC MCU 32BIT 66MHZ 196-MAPBGA
妯�(bi膩o)婧�(zh菙n)鍖呰锛� 750
绯诲垪锛� MCF527x
鏍稿績铏曠悊鍣細 Coldfire V2
鑺珨灏哄锛� 32-浣�
閫熷害锛� 66MHz
閫i€氭€э細 EBI/EMI锛屼互澶恫(w菐ng)锛孖²C锛孲PI锛孶ART/USART锛孶SB
澶栧湇瑷�(sh猫)鍌欙細 DMA锛學DT
杓稿叆/杓稿嚭鏁�(sh霉)锛� 32
绋嬪簭瀛樺劜鍣ㄥ閲忥細 16KB锛�4K x 32锛�
绋嬪簭瀛樺劜鍣ㄩ鍨嬶細 ROM
RAM 瀹归噺锛� 1K x 32
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 3 V ~ 3.6 V
鎸暕鍣ㄥ瀷锛� 澶栭儴
宸ヤ綔婧害锛� 0°C ~ 70°C
灏佽/澶栨锛� 196-LBGA
鍖呰锛� 甯跺嵎 (TR)
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Ethernet Module
MCF5272 ColdFire Integrated Microprocessor User鈥檚 Manual, Rev. 3
Freescale Semiconductor
11-15
11.5.5
Receive Descriptor Active Register (RDAR)
The RDAR register, Figure 11-9, is a command register that should be written by the user to indicate that
the receive descriptor ring has been updated (empty receive buffers have been produced by the driver with
the E bit set).
The R_DES_ACTIVE bit is set whenever the register is written. This is independent of the data actually
written by the user. When set, the FEC polls the receive descriptor ring and processes receive frames
(provided ETHER_EN is also set). As soon as the FEC polls a receive descriptor whose E bit is not set, it
clears the R_DES_ACTIVE bit and stops polling the receive descriptor ring.
The RDAR register is cleared at reset and when ETHER_EN is cleared.
Figure 11-9. Receive Descriptor Active Register (RDAR)
Table 11-11 describes the RDAR fields.
31
25
24
23
16
Field
鈥�
R_DES_ACTIVE
鈥�
Reset
0000_0000_0000_0000
R/W
Read/Write
15
0
Field
鈥�
Reset
0000_0000_0000_0000
R/W
Read/Write
Addr
MBAR + 0x850
Table 11-11. RDAR Register Field Descriptions
Bit
Name
Description
31鈥�25
鈥�
Reserved, should be cleared.
24
R_DES_ACTIVE
Set when this register is written, regardless of the value written. Cleared by the FEC whenever
no additional empty descriptors remain in the receive ring.
23鈥�0
鈥�
Reserved, should be cleared.
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
VI-21F-CU-S CONVERTER MOD DC/DC 72V 200W
VI-21D-CU-S CONVERTER MOD DC/DC 85V 200W
VI-21B-CU-S CONVERTER MOD DC/DC 95V 200W
VI-214-CU-S CONVERTER MOD DC/DC 48V 200W
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MCF5272VM66R2 鍒堕€犲晢:Freescale Semiconductor 鍔熻兘鎻忚堪:Microcontroler
MCF5272VM66R2J 鍔熻兘鎻忚堪:32浣嶅井鎺у埗鍣� - MCU V2CORE 4KSRAM RoHS:鍚� 鍒堕€犲晢:Texas Instruments 鏍稿績:C28x 铏曠悊鍣ㄧ郴鍒�:TMS320F28x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:64 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:26 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:2.97 V to 3.63 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:LQFP-80 瀹夎棰�(f膿ng)鏍�:SMD/SMT
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MCF5274CVM166J 鍒堕€犲晢:Freescale Semiconductor 鍔熻兘鎻忚堪:MCF5275 V2CORE - Bulk
MCF5274LCVM166 鍔熻兘鎻忚堪:寰檿鐞嗗櫒 - MPU MCF5275 V2CORE RoHS:鍚� 鍒堕€犲晢:Atmel 铏曠悊鍣ㄧ郴鍒�:SAMA5D31 鏍稿績:ARM Cortex A5 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:536 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:32 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:128 KB 鎺ュ彛椤炲瀷:CAN, Ethernet, LIN, SPI,TWI, UART, USB 宸ヤ綔闆绘簮闆诲:1.8 V to 3.3 V 鏈€澶у伐浣滄韩搴�:+ 85 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:FBGA-324