參數(shù)資料
型號: MB86967PFV
元件分類: 微控制器/微處理器
英文描述: 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP100
封裝: PLASTIC, LQFP-100
文件頁數(shù): 71/129頁
文件大?。?/td> 1519K
代理商: MB86967PFV
46
MB86967
(Continued)
(8) DLCR7: Control Register 2
DLCR7 sets the MB86967 operation modes.
(Continued)
Bit no.
Bit name
Operation
Value
Function
1
BUF SIZE 1
Read/Write
Sets size of external buffer memory (transmitter buffer size +
receiver buffer size)
0
BUF SIZE 0
Read
0
The read value of this bit is fixed at 0.
Write
Not affected
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Read
IDENT1
IDENT0
STBY
RDYPOL
RBS1
RBS0
EOP/EOP
BYTE
SWAP
Write
Initial Value
101
×
0000
Bit no.
Bit name
Operation
Value
Function
7 and 6 IDENT1
IDENT0
Read
Reading the initial values of these bits permits checking the
type of controller used in software.
Read values 10: MB86967
Read values 11: MB86965A
Read values 01: MB86964
Read values 00: MB86960A
Writing to these bits is invalid.
5STBY
Read/Write
0
The LAN controller is placed in the standby mode. In the
standby mode, the clock stops, reducing current consumption
to about 10%.
When 1 is prewritten to bit 4 of BMPR14, the MB86967 enters
the shutdown mode. In this mode, the crystal oscillator stops,
reducing the current consumption to about 1%.
In the PC card mode, when the PwrDwn bit of CCR1 is set to
1, this bit is set to 0. Writing from DLCR7 to this bit is
prohibited.
1
Operating state (not standby state). In the PC card mode,
when the PwrDwn bit of CCR1 is set to 0, this bit is set to 1.
Writing from DLCR7 to this bit is prohibited.
Return from the shutdown mode by resetting.
4
RDYPOL
Read
The value of the external pin RDYPOL can be read. In the PC
card mode, the read value is always 1. In the ISA bus mode,
the read value of this bit is always 0.
Write
Not affected
BUF SIZE 1
Buffer Size
08 Kbyte
1
32 Kbyte
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