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参数资料
| 型号： | DS8007A-EAG+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 17/41页 |
| 文件大小： | 0K |
| 描述： | IC INTERFACE SMART CARD 48-LQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 104 |
| 应用： | 智能卡 |
| 接口： | 并联 |
| 电源电压： | 2.7 V ~ 6 V |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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DS8007A
Multiprotocol Dual Smart Card Interface
24
______________________________________________________________________________________
Bits 7 to 5: Timeout Counter 3/2/1 Status (TO3 to
TO1). These bits are set to 1 whenever their respective
timeout counter reaches its terminal count. Any of these
bits causes the INT pin to be asserted.
Bit 4: Early Answer Detected (EA). This bit is set to 1
if a start bit is detected on the I/O line during the ATR
between clock cycles 200–368 when the RSTx pin is
low, and during the first 368 clock cycles after the RSTx
pin is high. When the EA bit becomes set, INT is assert-
ed. If the EA bit is set for a card during ATR, this bit is
cleared when switched to another card. During the
early answer detection period, a 46-clock-cycles sam-
pling period should be used to detect the start bit;
there is an undetected period of 32 clock cycles at the
end for both cases (between clock cycles 200–368
when the RSTx pin is low, and the first 368 clock cycles
after the RSTx pin is high).
Bit 3: Parity Error (PE). This status bit indicates when
the transmit or receive parity error count has been
exceeded. For protocol T = 0, the PEC2–PEC0 bits
define the allowable number of transmit or receive pari-
ty errors. For protocol T = 1, any parity error results in
the setting of the PE bit. When the PE bit is set, INT is
asserted. For protocol T = 0, characters received with
the incorrect parity are not stored in the receive FIFO.
For protocol T = 1, received characters with parity
errors are stored to the receive FIFO regardless of the
parity bit. The PE bit is set at 10.5 ETU in reception
mode and at 11.5 ETU in transmit mode for T = 0 and T
= 1 (PE bit is not applicable for transmit for T = 1).
Bit 2: Overrun FIFO (OVR). This status bit is set to 1 if
the UART receives a new character when the receive
FIFO is full. When a FIFO overrun condition occurs, the
new character received is lost and the previous FIFO
content remains undisturbed. When the OVR status bit
is set, INT is asserted. The OVR bit is set at 10.5 ETU in
receive mode for T = 0 and T = 1.
Bit 1: Framing Error (FER). This status bit is set to 1 if
the I/O line is not in the high state at time = 10.25 ETU
after the start bit. The FER bit is set to 10.5 ETU in
receive mode for T = 0 and T = 1.
Bit 0: Transmit Buffer Empty/Receive Buffer Full
(TBE/RBF). This is a duplicate of the same status bit
contained in the Mixed Status Register (MSR).
UART Status Register (USR)
R = unrestricted read, W = unrestricted write, -n = value after reset. All register bits are reset to 00000000b on RIU = 0.
Note: If any of the bits TO3, TO2, TO1, EA, PE, OVR, or FER are set, then a USR read operation clears the bit, causing an interrupt
less than 2s after the rising edge of the RD strobe. PE and FER can be set by the same reception.
76
54
3
2
10
Address 0Eh
TO3
TO2
TO1
EA
PE
OVR
FER
TBE/RBF
R-0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS8007A-EAG+ | 功能描述:接口 - 专用 Multiprotocol Dual Smart Card Interface RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| DS8007A-EAG+T | 功能描述:接口 - 专用 Multiprotocol Dual Smart Card Interface RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| DS8007-ENG | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Multiprotocol Dual Smart Card Interface |
| DS8007-ENG+ | 功能描述:接口 - 专用 Multiprotocol Dual Smart Card Interface RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| DS8007-KIT | 功能描述:界面开发工具 DS8007 Eval Kit RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
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