參數(shù)資料
型號(hào)： 73M1903-IM
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, QCC32
封裝： QFN-32
文件頁(yè)數(shù)： 3/45頁(yè)
文件大小： 449K
代理商： 73M1903-IM
73M1903
Modem Analog Front End
DATA SHEET
Page: 11 of 45
2005 TERIDIAN Semiconductor Corporation
Rev 1.4
GPIO
The TERIDIAN 73M1903 modem AFE device provides 8 user defined I/O pins. Each pin is programmed
separately as either an input or an output by a bit in a direction register. If the bit in the direction register is
set high, the corresponding pin is an input whose value is read from the GPIO data register. If it is low,
the pin will be treated as an output whose value is set by the GPIO data register.
To avoid unwanted current contention and consumption in the system from the GPIO port before the
GPIO is configured after a reset, the GPIO port I/Os are initialized to a high impedance state. The input
structures are protected from floating inputs, and no output levels are driven by any of the GPIO pins.
The GPIO pins are configured as inputs or outputs when the host controller (or DSP) writes to the GPIO
direction register. The GPIO direction and data registers are initialized to all ones (FFh) upon reset.
GPIO Data (GPIO): Address 02h
Reset State FFh
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
GPIO7
GPIO6
GPIO5
GPIO4
GPIO3
GPIO2
GPIO1
GPIO0
Bits in this register will be asserted on the GPIO(7:0) pins if the corresponding direction register bit is a 0.
Reading this address will return data reflecting the values of pins GPIO(7:0).
GPIO Direction (DIR): Address 03h
Reset State FFh
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
DIR7
DIR6
DIR5
DIR4
DIR3
DIR2
DIR1
DIR0
This register is used to designate the GPIO pins as either inputs or outputs. If the register bit is low, the
corresponding GPIO pin is programmed as an output. If the register bit is a 1, the corresponding pin will
be treated as an input.
ANALOG I/O
Figure 4 on page 12 shows the block diagram of the analog front end. The analog interface circuit uses
differential transmit and receive signals to and from the external circuitry.
The hybrid driver in the TERIDIAN 73M1903 IC is capable of connecting directly, but not limited to, a
transformer-based Direct Access Arrangement (DAA). The hybrid driver is capable of driving the DAA’s
line coupling transformer, which carries an impedance on the primary side that is typically rated at 600,
depending on the transformer and matching network. The hybrid drivers can also drive high impedance
loads without modification. The class AB behavior of the amplifiers provides load dependent power
consumption.
相關(guān)PDF資料
PDF描述
73M1903-IM/F SPECIALTY CONSUMER CIRCUIT, PQCC32
73M1903-IMR/F SPECIALTY CONSUMER CIRCUIT, PQCC32
73M1903-IVT/F SPECIALTY CONSUMER CIRCUIT, PDSO20
73M1903-IVTR/F SPECIALTY CONSUMER CIRCUIT, PDSO20
73M1903C-IM/F SPECIALTY CONSUMER CIRCUIT, PQCC32
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
73M1903-IM/F 功能描述:電信線路管理 IC Modem AFE V.22Bis-V.92 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
73M1903-IM/F1 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
73M1903-IMR/F 功能描述:電信線路管理 IC Modem AFE V.22Bis-V.92 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
73M1903-IMR/F1 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
73M1903-IVT/F 功能描述:IC MODEM AFE V.22BIS 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模擬前端 (AFE) 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):- 通道數(shù):2 功率（瓦特）:- 電壓 - 電源，模擬:3 V ~ 3.6 V 電壓 - 電源，數(shù)字:3 V ~ 3.6 V 封裝/外殼:32-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:帶卷 (TR)
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