參數(shù)資料
型號(hào)： W9968CF
英文描述： Digital Camera
中文描述： 數(shù)碼相機(jī)
文件頁數(shù)： 17/78頁
文件大?。?/td> 814K
代理商： W9968CF
W9968CF
Publication Release Date: May 1999
- 17 - Revision A2
4.3 Power-on Reset Initialization
During power-on reset, states of the memory data lines MD[7:0] are latched into the W9968CF
′
s
internal configuration registers as device configuration information. Since each pin of MD[7:0] is
internally pulled up on its I/O buffer, no external pull-up resistor is required. For pull-down, a 4.7K ohm
resistor is recommended. Table 4.2 describes the power-on reset configuration definitions.
Table 4.2 Power-on Reset Configuration Definitions
MD Bit
Value
Definition
Conf Reg
MD7
0
1
Normal operation
Force suspend mode if suspend mode is enabled
CR00_15
MD6
0
1
Suspend mode is disabled
Suspend mode is enabled
CR00_14
MD5
0
1
sochronous handshake phase is enabled
sochronous handshake phase is disabled
CR00_13
MD4
0
1
nternal RCV comes from SIE
nternal RCV comes from USB Transceiver
CR00_12
MD3
0
1
PLL Disable
PLL Enable
CR00_11
MD2
0
1
Low Power, Bus-powered Devices
High Power, Bus-powered Devices
CR00_10
MD1
0
1
EDO DRAM
SDRAM
CR00_9
MD0
0
1
256Kx DRAM
1Mx DRAM
CR00_8
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