- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98011 > MC68838FCC (MOTOROLA INC) 1 CHANNEL(S), 125M bps, FDDI CONTROLLER, CQFP120 PDF資料下載
參數(shù)資料
| 型號(hào)： | MC68838FCC |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 1 CHANNEL(S), 125M bps, FDDI CONTROLLER, CQFP120 |
| 封裝： | CERAMIC, QFP-120 |
| 文件頁數(shù)： | 48/100頁 |
| 文件大?。?/td> | 465K |
| 代理商： | MC68838FCC |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁當(dāng)前第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁
MOTOROLA
MC68838 USER’S MANUAL
3- 31
the timer. If the timer overflows, the VOID_TIMER_OVF bit in the INTR_EVENT_C
register will be set. This indicates that the ring may have latency problems.
3.7 INTERNAL REGISTERS
Four registers are not normally of interest to the NP, although they all can be read at any
time However, it can take more than one read operation to obtain their value and they can
change value between these reads. They are exclusively used for ATE testing and
diagnostic software. None of these registers can be directly written by the NP. These
registers are not further defined for user operation.
3.7.1 Revision Number Register (REV_NO_REG)
15
14
13
12
11
10
9
8
0000
MAC CHIP TYPE (MSB)
76543
0
MAC CHIP TYPE (LSB)
MAC REVISION NUMBER
This register contains the MAC chip type and revision number.
MAC Chip Type for a standalone chip is 00000000.
MAC Revision Number. This is 0000 for MAC Rev A and 0011 for MAC Rev C.
3.7.2 Packet Request Register (PKT_REQUEST)
The packet request register is intended for factory testing only to allow test programs to
access the internal packet request state. This register contains the last, or current, packet
request header control bytes presented to the MAC by the FSI. See 8.3 Packet Request
Header for definitions of these bits.
15
14
13
12
11
10
9
8
0
BCN_FRAME
USE_R_FLAG
PREF_SEND_
LAST
TOKEN_TYPE
SYNCH_
FRAME
IMMED_MODE
76543
0
SEND_FIRST
SEND_LAST
APPEND_CRC
TOKEN_SEND
EXTRA_FS
BCN_FRAME—Beacon Frame
This bit has the inverse value of the BCN_FRAME bit contained in the last packet
request header control bytes.
USE_R_FLAG—Use R-FLAG
This bit contains the value of the internal USE_R_FLAG flip/flop.
ARCHIVE
INFORMA
TION
ARCHIVE
INFORMA
TION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68EC020FG | 32-BIT, 25 MHz, MICROCONTROLLER, PQFP100 |
| MC68HC05CC1P | 8-BIT, MROM, 4.2 MHz, MICROCONTROLLER, PDIP40 |
| MC68HC05CC2B | 8-BIT, MROM, 4.2 MHz, MICROCONTROLLER, PDIP42 |
| MC68HC05CT4FN | 8-BIT, MROM, 2.048 MHz, MICROCONTROLLER, PQCC44 |
| MC68HC05J1P | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68840FE25B | 制造商:Motorola Inc 功能描述:68840FE25B |
| MC68840FE-25B | 制造商:Motorola Inc 功能描述:68840FE-25B |
| MC6885 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HEX THREE-STATE BUFFER/INVERTERS |
| MC68851 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Paged Memory Management Unit |
| MC6885L | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HEX THREE-STATE BUFFER/INVERTERS |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。
