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鍙冩暩(sh霉)璩囨枡
鍨嬭櫉(h脿o)锛� MCF5272VM66J
寤犲晢锛� Freescale Semiconductor
鏂囦欢闋佹暩(sh霉)锛� 151/544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� 126
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(ch菙)鍣ㄥ閲忥細 16KB锛�4K x 32锛�
绋嬪簭瀛樺劜(ch菙)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� 鎵樼洡
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Ethernet Module
MCF5272 ColdFire Integrated Microprocessor User鈥檚 Manual, Rev. 3
11-16
Freescale Semiconductor
11.5.6
Transmit Descriptor Active Register (TDAR)
The TDAR register, Figure 11-10, is a command register which should be set by the user to indicate that
the transmit descriptor ring has been updated, that is, transmit buffers have been defined by the driver with
the ready bit set in the buffer descriptor.
The X_DES_ACTIVE bit is set whenever the register is written. This is independent of the data actually
written by the user. When TDAR is set, the FEC polls the transmit descriptor ring and processes transmit
frames (provided ETHER_EN is also set). As soon as the FEC polls a transmit descriptor whose ready bit
is not set, it clears the X_DES_ACTIVE bit and stops polling the transmit descriptor ring.
The TDAR register is cleared at reset and when ETHER_EN is cleared. Figure 11-10 describes this
register.
Table 11-12 describes the TDAR fields.
31
25
24
23
16
Field
鈥�
X_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 +0x854
Figure 11-10. Transmit Descriptor Active Register (TDAR)
Table 11-12. TDAR Field Descriptions
Bits
Name
Description
31鈥�25
鈥�
Reserved, should be cleared.
24
X_DES_ACTIVE
Set to one when this register is written, regardless of the value written. Cleared by the FEC
whenever no additional ready descriptors remain in the transmit ring.
23鈥�0
鈥�
Reserved, should be cleared.
鐩搁棞(gu膩n)PDF璩囨枡
PDF鎻忚堪
MS3102E22-5S CONN RCPT 6POS BOX MNT W/SCKT
MS3112E12-10S CONN RECEPT 10POS W/SOCKT SOLDER
PS0055BE33036BF1 CAP CER 33PF 5KV 10% CHASSIS
PS0055BE27136BH1 CAP CER 270PF 5KV 10% CHASSIS
PS0055BE22136BH1 CAP CER 220PF 5KV 10% CHASSIS
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鍙冩暩(sh霉)鎻忚堪
MCF5272VM66J 鍒堕€犲晢:Freescale Semiconductor 鍔熻兘鎻忚堪:IC 32BIT MPU 66MHZ BGA-196
MCF5272VM66R2 鍔熻兘鎻忚堪:寰檿鐞嗗櫒 - MPU MCF5272 V2CORE 4KSRAM 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(sh铆)閻橀牷鐜�:536 MHz 绋嬪簭瀛樺劜(ch菙)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
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(sh铆)閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜(ch菙)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
MCF5274CVM166 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(sh铆)閻橀牷鐜�:536 MHz 绋嬪簭瀛樺劜(ch菙)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