The MAX3109 can be controlled through I<" />
參數(shù)資料
型號： MAX3109ETJ+
廠商： Maxim Integrated Products
文件頁數(shù)： 53/66頁
文件大?。?/td> 0K
描述： SEMICONDUCTOR OTHER
標準包裝： 60
系列： *
Dual Serial UART with 128-Word FIFOs
MAX3109
57
Maxim Integrated
Serial Controller Interface
The MAX3109 can be controlled through I2C or SPI as
defined by the logic on SPI/I2C. See the Pin Description
for further details.
SPI Interface
The SPI supports both single-cycle and burst read/write
access. The SPI master must generate clock and data
signals in SPI MODE0 (i.e., with clock polarity CPOL = 0
and clock phase CPHA = 0).
Each of the two UARTs is addressed using 1 bit (U) in the
command byte (Table 7).
To access the registers with addresses 0x20 or higher in
SPI mode, enable extended register map access. See the
GloblComnd register description for more information.
SPI Single-Cycle Access
Before a specific UART has been addressed, both
UARTs could attempt to drive MISO. To avoid this con-
tention, the MISO line is held in high impedance during a
write cycle (Figure 18).
During a read cycle, MISO is high impedance for the first
four clock cycles of the command byte. Once the SPI
address has been properly decoded, the addressed SPI
drives the MISO line (Figure 19).
Figure 18. SPI Write Cycle
Figure 19. SPI Ready Cycle
Table 7. SPI Command Byte Configuration
Ax = Register address.
HIGH-Z
Ax = REGISTER ADDRESS
Dx = 8-BIT REGISTER CONTENTS
CS
SCLK
MOSI
MISO
W0
U
A4
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
HIGH-Z
Ax = REGISTER ADDRESS
Dx = 8-BIT REGISTER CONTENTS
SCLK
MOSI
MISO
R
0
U
A4
A3
A2
A1
A0
CS
00
IRQ1
IRQ0
D7
D6
D5
D4
D3
D2
D1
D0
SPI COMMAND BYTE
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
W/R
0
U
A4
A3
A2
A1
A0
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參數(shù)描述
MAX3109ETJ+ 功能描述:UART 接口集成電路 Dual Serial UART with 128-Word FIFOs RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
MAX3109ETJ+T 功能描述:UART 接口集成電路 Dual Serial UART with 128-Word FIFOs RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
MAX310C/D 功能描述:多路器開關(guān) IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
MAX310CPE 功能描述:多路器開關(guān) IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
MAX310CPE+ 功能描述:多路器開關(guān) IC 8:1 Unbuffered RF Video MUX RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
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