- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373859 > AD1801 (Analog Devices, Inc.) Single-Chip Fax/Data/ Voice Modem(單片的傳真/數(shù)據(jù)/語音調(diào)制解調(diào)器) PDF資料下載
參數(shù)資料
| 型號： | AD1801 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Single-Chip Fax/Data/ Voice Modem(單片的傳真/數(shù)據(jù)/語音調(diào)制解調(diào)器) |
| 中文描述： | 單芯片傳真/數(shù)據(jù)/語音調(diào)制解調(diào)器（單片的傳真/數(shù)據(jù)/語音調(diào)制解調(diào)器） |
| 文件頁數(shù)： | 36/52頁 |
| 文件大?。?/td> | 348K |
| 代理商： | AD1801 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁當前第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
AD1801
–36–
REV. 0
DATA[7:0]
Only one byte of data may be written to the CIS RAM per cycle, and it must be MSB justified on the 16-bit DSP
data bus. Each CIS RAM address points to a single byte.
If in PnP Mode: The PnP Identifier must be written into the first nine bytes of the CIS RAM, i.e., addresses
0x000 to 0x008. Immediately after the PnP Identifier, the PnP Resource Data must be loaded. Resource Data may
use any number of the remaining 503 CIS RAM bytes. The first PnP Identifier byte must be written into the CIS
RAM within 1 ms after system reset (
RESET
pin) is deasserted. The remaining eight PnP Identifier bytes must be
loaded at a rate of one every 2 ms or faster. Resource Data may be written into the CIS RAM at any rate. All
bytes, whether PnP Identifier or Resource Data, must be written into CIS RAM consecutively, and in a single
pass.
If In PCMCIA Mode: Writes of tuples may be at any rate and in any order. Once the CIS RAM is configured, the
RDY bit in register DC must be set to “1” to indicate CIS RAM load completion. After setting the RDY bit to
“1,” further writes to CIS RAM must not occur.
Mnemonic: DC
Access: Read/Write
DSP Control
Address: 0x200
5
1
a
t
a
D
4
1
a
t
a
D
3
1
a
t
a
D
2
1
a
t
a
D
1
1
a
t
a
D
0
1
a
t
a
D
9
a
t
a
D
8
a
t
a
D
X
I
P
S
D
X
I
G
N
R
Q
R
I
C
P
s
e
r
S
A
P
Y
B
Y
D
R
W
B
D
1
P
F
W
B
D
2
P
F
7
a
t
a
D
6
a
t
a
D
5
a
t
a
D
4
a
t
a
D
3
a
t
a
D
2
a
t
a
D
1
a
t
a
D
0
a
t
a
D
E
D
O
M
P
T
R
O
P
S
P
N
A
H
C
P
S
A
1
0
O
I
T
I
A
W
B
S
M
R
D
P
N
R
D
P
D
P
DSPIX
Alternate DSP access for PC I/O mapped register bits. Reading this bit returns the state of the DSPI bit in the PC
I/O memory mapped register PCS. Writing this bit is identical to writing the DSPIA bit in the PC I/O memory
mapped register PCC.
Alternate DSP access for PC I/O mapped register bits. Reading this bit returns the state of the RNGI bit in the
PC I/O memory mapped register PCS. Writing this bit is identical to writing the RNGIA bit in the PC I/O
memory mapped register PCC.
PC Interrupt Request. If in ISA or PCMCIA mode, writing a “1” to this bit sets the DSPI (host PC interrupt
request from DSP) bit in the PC mapped I/O register PCS. In ISA mode, an interrupt to the host PC is asserted if
DSPI is set to “1,” provided DSP interrupts to the host are enabled (see bit DSPIE in PC I/O mapped register
PCC). In PCMCIA mode, DSPI itself does not cause a host interrupt, but can be monitored to distinguish be-
tween DSP and RING Pin interrupts to the host PC. When in PCMCIA mode, writing a “1” to PCIRQ sets
CSR0 Bit 0 to a “1,” in addition to setting DSPI. If CSR0 Bit 0 is set to “1,” an interrupt to the host PC is as-
serted, provided DSP interrupts to the host are enabled (see COR0 bit 2) and the function is enabled (see COR0).
PnP Bypass. Used in ISA mode only and ignored in PCMCIA mode. When this bit is set to “0,” the PNP_
STD
pin determines whether the AD1801 is in PnP or non-PnP mode. When set to “1,” the PNP_
STD
pin is ignored,
and the AD1801 is always in non-PnP mode. When in non-PnP mode, the BA and IRQ registers must be written
to select base address and IRQ.
0 = PNP_
STD
Pin Selects Mode
1 = PNP_
STD
Pin Ignored, Non-PnP Mode Forced
CIS Memory Initialized Indicator. Used in PCMCIA mode only and ignored in ISA mode. This bit should be
changed from its reset default of “0” to “1” by the DSP once the DSP has completely initialized the CIS RAM.
When set to “1,” the
IREQ
pin, which serves as the PCMCIA READY pin at startup, is released from its reset
default of LO and driven HI. This indicates to the PCMCIA host bus adapter that the AD1801 has completed
self-initialization and is ready to be accessed.
PCMCIA Function Port 1 Data Bus Width Identifier. Used in PCMCIA mode only and ignored in ISA mode.
This bit must be written by the DSP before the AD1801 indicates it is ready to proceed with configuration at
startup, i.e., before or coincident with the RDY bit in this register being written to a “1.” It is used to define the
behavior of the
IOCS16
pin when function port 1 is read.
0 = PCMCIA Function Port 1 is 8 bits
1 = PCMCIA Function Port 1 is 16 bits
PCMCIA Function Port 2 Data Bus Width Identifier. Used in PCMCIA mode only and ignored in ISA mode.
This bit must be written by the DSP before the AD1801 indicates it is ready to proceed with configuration at
startup, i.e., before or coincident with the RDY bit in this register being written to a “1.” It is used to define the
behavior of the
IOCS16
pin when function port 2 is read.
0 = PCMCIA Function Port 2 is 8 bits
1 = PCMCIA Function Port 2 is 16 bits
RNGIX
PCIRQ
BYPAS
RDY
FP1DBW
FP2DBW
相關PDF資料 |
PDF描述 |
|---|---|
| AD1803JRU | U.S./International Modem DAA Line Codec Chipset |
| AD1803 | ECONOLINE: RD & RC - Dual Output from a Single Input Rail- 1kVDC & 2kVDC Isolation- Power Sharing on Output- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 86% |
| AD1804 | U.S./International Modem DAA Line Codec Chipset |
| AD1804JRU | ECONOLINE: RD & RC - Dual Output from a Single Input Rail- 1kVDC & 2kVDC Isolation- Power Sharing on Output- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 86% |
| AD1812JST | Silver Mica Capacitor; Capacitance:12pF; Capacitance Tolerance: 5%; Series:CD17; Voltage Rating:500VDC; Capacitor Dielectric Material:Mica; Termination:Radial Leaded; Lead Pitch:5.9mm; Leaded Process Compatible:No RoHS Compliant: No |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD1801JS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD1801JST-REEL | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| AD1803 | 制造商:AD 制造商全稱:Analog Devices 功能描述:U.S./International Modem DAA Line Codec Chipset |
| AD1803-0.4 | 制造商:Analog Devices 功能描述: |
| AD1803JRU | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。