參數(shù)資料
型號： uPSD3254AV-40T6T
廠商： 意法半導(dǎo)體
英文描述： Flash Programmable System Devices with 8032 Microcontroller Core
中文描述： 閃存可編程系統(tǒng)設(shè)備與8032微控制器內(nèi)核
文件頁數(shù)： 84/175頁
文件大小： 1731K
代理商： UPSD3254AV-40T6T
UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
84/175
Table 61. Description of the DDCON Register Bits
Bit
Symbol
Function
7
—
Reserved
6
EX_DAT
0 = The SRAM has 128 bytes (Default)
1 = The SRAM has 256 bytes
5
SWENB
Note:
This bit is valid for DDC1 & DDC2b Modes
0 = Data is automatically read from SRAM at the current location of DDCADR and sent
out via current DDC protocol. (Default)
1 = MCU is interrupted during the current data byte transmission period to load the next
byte of data to send out.
4
DDC_AX
Note:
This bit is valid for DDC1 & DDC2b Modes
0 = Data is automatically read from SRAM at the current location of DDCADR and sent
out via current DDC protocol. (Default)
1 = MCU is interrupted during the current data byte transmission period to load the next
byte of data to send out.
This bit only affects DDC2b Mode Operation:
0 = DDC2b I2C Address is A0/A1 (default)
1 = DDC2b I2C Address is AX. Least 3 significant address bits are ignored.
3
DDC1_Int
For DDC1 Mode Operation Only:
0 = No DDC1 Interrupt
1 = DDC1 Interrupt request. Set by HW and should be cleared by SW interrupt service
routine.
Note1:
This bit is set in the 9th V
CLK
at DDC1 Enable Mode. (SWENB=1)
2
DDC1EN
0 = DDC1 Mode is disabled –
V
SYNC
is ignored.
The DDC unit will still respond to DDC2b requests. –provided I2C enabled.(Default)
1 = DDC1 Mode is enabled.
1
SWHINT
Set by hardware when the DDC unit switches from DDC1 to DDC2b Modes.
0 = No interrupt request.
1 = Switch to DDC2b Mode (Interrupt pending)
Set by HW and should be cleared by SW interrupt service routine.
Note1:
This bit has no connection with SWENB.
0
Mode
Current Mode Indication Bit:
0 = Unit is in DDC1 Mode
1 = Unit is in DDC2b Mode
Note:
When the DDC unit transitions to DDC2b Mode, the DDC unit will stay in DDC2b
Mode until the DDC unit is disabled, or the system is reset.
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