The LED Drivers, weak pull-ups, and VDD
參數(shù)資料
型號: CP2201-GM
廠商: Silicon Laboratories Inc
文件頁數(shù): 49/108頁
文件大?。?/td> 0K
描述: IC ETH CTRLR SNGL-CHIP 28QFN
標準包裝: 73
控制器類型: 以太網(wǎng)控制器,MAC/10Base-T
接口: 并行/串行
電源電壓: 3.1 V ~ 3.6 V
電流 - 電源: 75mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 28-QFN(5x5)
包裝: 管件
產(chǎn)品目錄頁面: 627 (CN2011-ZH PDF)
配用: 336-1326-ND - KIT REF DESIGN PWR OVER ETHERNET
336-1316-ND - KIT EVAL FOR CP2201 ETH CTRLR
其它名稱: 336-1313
CP2200/1
Rev. 1.0
45
10.5. Disabling Secondary Device Functions
The LED Drivers, weak pull-ups, and VDD Monitor can be disabled to minimize power consumption. The typical
supply current for the VDD Monitor is specified in Table 13 on page 42. Disabling weak pull-ups will save current if
the MOTEN and MUXEN pins are tied to ground, but will cause the address and data pins to float (causing
undefined device behavior and increased power consumption) if they are not externally driven or pulled to a
defined logic level using pull-up or pull-down resistors. The internal weak pull-ups should not be disabled unless all
digital pins are externally driven to a logic high or logic low state.
Register 15. IOPWR: Port Input/Output Power Register
Bits 7–4: UNUSED. Read = 0000b, Write = don’t care.
Bit 3
ACTEN: Activity LED Enable
0: Activity LED disabled.
1: Activity LED enabled.
Bit 2
LINKEN: Link LED Enable (Link/Activity LED on CP2201)
0: Link (Link/Activity) LED disabled.
1: Link (Link/Activity) LED enabled.
Bit 1:
WEAKD: Weak Pull-up Disable
0: Weak pull-ups are enabled.
1: Weak pull-ups are disabled.
Bit 0:
Reserved. Read = 0b; Must write 0b.
R/W
Reset Value
ACTEN
LINKEN
WEAKD
Reserved 00000000
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Address:
0x70
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