參數(shù)資料
型號: MSM9225BGA-2K
廠商: OKI ELECTRIC INDUSTRY CO LTD
元件分類: 微控制器/微處理器
英文描述: 2 CHANNEL(S), 1M bps, LOCAL AREA NETWORK CONTROLLER, PQFP44
封裝: PLASTIC, QFP-44
文件頁數(shù): 39/95頁
文件大小: 567K
代理商: MSM9225BGA-2K
MSM9225B User’s Manual
Chapter 2 Register Descriptions
2 – 31
(2) Output driver format setting: OCPOL, OCTN, OCTP
OCPOL is used to set the polarity of output.
OCTN is used to set the open drain mode of the Nch transistor of the output driver.
OCTP is used to set the open drain mode of the Pch transistor of the output driver.
Figure 2-29 shows the circuit configuration of the output driver, and Table 2-10 the relationship between
bit content and output driver format.
Output control
circuit
Output data
Synchronization
clock
VDD
Pch
Tx0
Nch
GND
VDD
Pch
Tx1
Nch
GND
Figure 2-29 Circuit Configuration of Output Driver
Table 2-10 Output Driver Format Setting
Mode
OCTPn*
OCTNn*
OCPOLn*
Output
data
Pch Tr
Nch Tr
Txn* pin output level
0
off
Floating
0
1
off
Floating
0
off
Floating
0
1
off
Floating
0off
on
“0”
0
1
off
Floating
0
off
Floating
Pull-down
0
1
1off
on
“0”
0
off
Floating
0
1on
off
“1”
0on
off
“1”
Pull-up
0
1
off
Floating
0off
on
“0”
0
1on
off
“1”
0on
off
“1”
Push-pull
1
1off
on
“0”
* n = 0 or 1
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