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參數(shù)資料
| 型號(hào)： | KS16114 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 9600/14400 bps FAX MODEM |
| 中文描述： | 14400分之9600基點(diǎn)傳真調(diào)制解調(diào)器 |
| 文件頁(yè)數(shù)： | 4/69頁(yè) |
| 文件大小： | 513K |
| 代理商： | KS16114 |
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KS16112/4
9600/14400 bps FAX MODEM
-
4
-
PIN DESCRIPTION
Pin No.
Symbol
Type
Description
67
1
2
3
4
55
56
57
58
59
60
61
62
65
66
64
RS4
RS3
RS2
RS1
RS0
D7
D6
D5
D4
D3
D2
D1
D0
CS
READ -
2
WRITE -R/W
I
I/O
I
I
I
Register select bus
These lines are used to address interface memory registers within
the modem. When CS is active, the modem decodes RS0 through
RS4 to address one of its 32 internal interface memory registers.
RS4 is the most significant bit. In a typical design, RS0 - RS4 are
connected to A0 - A4 address lines of the host microprocessor.
Data bus
These bi-directional data bus lines provide parallel data transfer
between the modem and the host microprocessor.
D7 is the most significant bit.
The direction of the D0 - D7 data bus is controlled by the
READ -
2
and WRITE - R/W signals.
When not being written into or read from, D0 - D7 assume the
high impedance state.
Chip select
The modem is selected and decodes RS0 - RS4 when CS
becomes active at which time data transfer between the modem
and the host can take place over the parallel data bus.
Typically, CS is driven by address decode logic.
Read enable ( bus mode ) or phase2 ( 6500 bus mode )
If 8085 bus mode is selected ( EN85 is connected to ground ), this
signal acts as the READ input.
If 6500 bus mode is selected ( EN85 is pulled - up to +5V ), this signal
acts as the Phase 2 clock input.
Write enable ( bus mode ) or R/W ( 6500 bus mode )
If 8085 bus mode is selected ( EN85 is connected to ground ), this
signal acts as the WRITE input.
If 6500 bus mode is selected ( EN85 is pulled - up to +5V ), this signal
acts as the R/W strobe.
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|---|---|
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