參數(shù)資料
型號(hào)： TDA8030
廠商： NXP Semiconductors N.V.
英文描述： USB smart card reader (OTP or ROM)
中文描述： USB智能卡閱讀器（OTP或光盤）
文件頁(yè)數(shù)： 40/57頁(yè)
文件大?。?/td> 228K
代理商： TDA8030
2003 Jul 04
40
Philips Semiconductors
Product specification
USB smart card reader (OTP or ROM)
TDA8030; TDA8031
Table 38
Set device status command function bits
Table 39
Power-on value for Get Error Code
Table 40
Error codes
FUNCTION
DESCRIPTION
Suspend
The Suspend bit represents the current Suspend state. It is logic 1 when the device has not seen
any activity on its upstream port for more than 3 ms. It is reset to logic 0 on any activity.
When the device is suspended, (Suspend bit = 1) and the microcontroller writes logic 0 into it,
the device will generate a remote wake-up. When the device is not suspended, writing a logic 0
has no effect. Writing a logic 1 in this register has no an effect.
The Suspend Change bit is set to logic 1 when the Suspend bit toggles. The Suspend bit can
toggle because:
The device goes into the suspended state
The device receives resume signalling on its upstream port
The Suspend Change bit is reset after the register has been read.
The Bus reset bit is set when the device receives a bus reset. It is cleared when read. On a bus
reset, the device will automatically go to the default state (unconfigured and responding to
address 0).
Suspend Change
Bus reset
FUNCTION
7
6
5
4
0
3
2
1
0
Error code
Error occurred
Reserved
0
0
0
0
ERROR CODE[3:0]
DESCRIPTION
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
no error
PID encoding error
unknown PID
unexpected packet
error in token CRC
error in data CRC
time-out error
babble
error in end of packet
sent NAK
sent Stall
buffer overrun error
reserved
bitstuff error
error in sync
wrong toggle bit in data PID; ignored data
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