參數(shù)資料
型號： SCC2698B
廠商： NXP Semiconductors N.V.
英文描述： Enhanced octal universal asynchronous receiver/transmitter (Octal UART)(增強(qiáng)型八通用異步接收器/傳送器)
中文描述： 增強(qiáng)八進(jìn)制通用異步接收器/發(fā)送器（八路的UART）（增強(qiáng)型八通用異步接收器/傳送器）
文件頁數(shù)： 7/29頁
文件大?。?/td> 167K
代理商： SCC2698B
Philips Semiconductors
Product specification
SCC2698B
Enhanced octal universal asynchronous
receiver/transmitter (Octal UART)
2000 Jan 31
7
clock is used instead of a crystal, X1 must be driven and X2 left
floating as shown in Figure 9. The clock serves as the basic timing
reference for the baud rate generator (BRG), the counter/timer, and
other internal circuits. A clock frequency, within the limits specified in
the electrical specifications, must be supplied even if the internal
BRG is not used.
Table 1.
Register Addressing
Units A and B
Units E and F
A5
A4
A3
A2
A1
A0
READ (RDN=0)
WRITE
(WRN=0)
MR1a, MR2a
CSRa
CRa
THRa
ACRA
IMRA
CTPUA
CTPLA
MR1b, MR2b
CSRb
CRb
THRb
Reserved
1
OPCRA
Reserved
1
Reserved
1
A5
A4
A3
A2
A1
A0
READ (RDN=0)
WRITE
(WRN=0)
MR1e, MR2e
CSRe
CRe
THRe
ACRC
IMRC
CTPUC
CTPLC
MR1f, MR2f
CSRf
CRf
THRf
Reserved
1
OPCRC
Reserved
1
Reserved
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Units C and D
0
MR1c, MR2c
1
SRc
0
Reserved
1
1
RHRc
0
IPCRB
1
ISRB
0
CTUB
1
CTLB
0
MR1d, MR2d
1
SRd
0
Reserved
1
1
RHRd
0
Reserved
1
1
Input port B
0
Start C/T B
1
Stop C/T B
MR1a, MR2a
SRa
BRG Test
2
RHRa
IPCRA
ISRA
CTUA
CTLA
MR1b, MR2b
SRb
1X/16X Test
2
RHRb
Reserved
1
Input port A
Start C/T A
Stop C/T A
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Units G and H
0
MR1g, MR2g
1
SRg
0
Reserved
1
1
RHRg
0
IPCRD
1
ISRD
0
CTUD
1
CTLD
0
MR1h, MR2h
1
SRh
0
Reserved
1
1
RHRh
0
Reserved
1
1
Input port D
0
Start C/T D
1
Stop C/T D
MR1e, MR2e
SRe
Reserved
1
RHRe
IPCRC
ISRC
CTUC
CTLC
MR1f, MR2f
SRf
Reserved
1
RHRf
Reserved
1
Input port C
Start C/T C
Stop C/T C
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
MR1c, MR2c
CSRc
CRc
THRc
ACRB
IMRB
CTPUB
CTPLB
MR1d, MR2d
CSRd
CRd
THRd
Reserved
1
OPCRB
Reserved
1
Reserved
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
MR1g, MR2g
CSRg
CRg
THRg
ACRD
IMRD
CTPUD
CTPLD
MR1h, MR2h
CSRh
CRh
THRh
Reserved
1
OPCRD
Reserved
1
Reserved
1
NOTE:
1. Reserved registers should never be read during normal operation since they are reserved for internal diagnostics.
ACR =
Auxiliary control register
CR
=
Command register
CSR =
Clock select register
CTL
=
Counter/timer lower
CTPL =
Counter/timer preset lower register
CTU
=
Counter/timer upper
CTPU =
Counter/timer preset upper register
MR
=
Mode register
2. See Table 5 for BRG Test frequencies in this data sheet, and “Extended baud rates for SCN2681, SCN68681, SCC2691, SCC2692, SCC68681
and SCC2698B”Philips Semiconductors ICs for Data Communications, IC-19, 1994.
SR
THR
RHR =
IPCR =
ISR
IMR
OPCR=
=
=
Status Register
Tx holding register
Rx holding register
Input port change register
Interrupt status register
Interrupt mask register
Output port configuration register
=
=
BRG
The baud rate generator operates from the oscillator or external
clock input and is capable of generating 26 commonly used data
communications baud rates ranging from 50 to 115.2K baud.
Thirteen of these are available simultaneously for use by the
receiver and transmitter. Eight are fixed, and one of two sets of five
can be selected by programming ACR[7]. The clock outputs from
the BRG are at 16X the actual baud rate. The counter/timer can be
used as a timer to produce a 16X clock for any other baud rate by
counting down the crystal clock or an external clock. The clock
selectors allow the independent selection, by the receiver and
transmitter, of any of these baud rates or an external timing signal.
Counter–Timer
The four Counter/Timers are programmable 16 bit dividers that are
used for generating miscellaneous clocks or generating timeout
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SCC2698BC1A84,512 功能描述:UART 接口集成電路 8CH. UART ENHANCED 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
SCC2698BC1A84,518 功能描述:UART 接口集成電路 5V INDUSTRIAL UART 8 CHANNEL 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
SCC2698BE1A84 功能描述:UART 接口集成電路 5V INDSTRL UART 8 C 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
SCC2698BE1A84,512 功能描述:UART 接口集成電路 5V INDSTRL UART 8 C 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
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