參數(shù)資料
型號: SC16C754BIB80,551
廠商: NXP Semiconductors
文件頁數(shù): 27/50頁
文件大?。?/td> 0K
描述: IC UART QUAD 64BYTE 80LQFP
標準包裝: 119
通道數(shù): 4,QUART
FIFO's: 64 字節(jié)
電源電壓: 2.5V,3.3V,5V
帶自動流量控制功能:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
安裝類型: 表面貼裝
封裝/外殼: 80-LQFP
供應(yīng)商設(shè)備封裝: 80-LQFP(12x12)
包裝: 托盤
其它名稱: 935274939551
SC16C754BIB80-S
SC16C754BIB80-S-ND
SC16C754B_4
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 6 October 2008
33 of 51
NXP Semiconductors
SC16C754B
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
The FIFO ready register is a read-only register that can be accessed when any of the four
UARTs is selected CSA to CSD = 0, MCR[2] (FIFO Rdy Enable) is a logic 1, and loopback
is disabled. The address is 111.
8.
Programmer’s guide
The base set of registers that is used during high-speed data transfer have a
straightforward access method. The extended function registers require special access
bits to be decoded along with the address lines. The following guide will help with
programming these registers. Note that the descriptions below are for individual register
access. Some streamlining through interleaving can be obtained when programming all
the registers.
Table 23.
Register programming guide
Command
Actions
set baud rate to VALUE1, VALUE2
read LCR (03h), save in temp
set LCR (03h) to 80h
set DLL (00h) to VALUE1
set DLM (01h) to VALUE2
set LCR (03h) to temp
set Xoff1, Xon1 to VALUE1, VALUE2
read LCR (03h), save in temp
set LCR (03h) to BFh
set Xoff1 (06h) to VALUE1
set Xon1 (04h) to VALUE2
set LCR (03h) to temp
set Xoff2, Xon2 to VALUE1, VALUE2
read LCR (03h), save in temp
set LCR (03h) to BFh
set Xoff2 (07h) to VALUE1
set Xon2 (05h) to VALUE2
set LCR (03h) to temp
set software ow control mode to VALUE
read LCR (03h), save in temp
set LCR (03h) to BFh
set EFR (02h) to VALUE
set LCR (03h) to temp
set ow control threshold to VALUE
read LCR (03h), save in temp1
set LCR (03h) to BFh
read EFR (02h), save in temp2
set EFR (02h) to 10h + temp2
set LCR (03h) to 00h
read MCR (04h), save in temp3
set MCR (04h) to 40h + temp3
set TCR (06h) to VALUE
set MCR (04h) to temp3
set LCR (03h) to BFh
set EFR (02h) to temp2
set LCR (03h) to temp1
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