參數(shù)資料
型號(hào)： 03H5716
元件分類： 通信及網(wǎng)絡(luò)
英文描述： SPECIALTY TELECOM CIRCUIT, PQFP100
封裝： 14 X 20 MM, 2.70 MM HEIGHT, 0.65 MM PITCH, PLASTIC, FP-100
文件頁(yè)數(shù)： 7/70頁(yè)
文件大?。?/td> 547K
代理商： 03H5716
Product Part Number: IBM22-ALDC1020S-01
ALDC1-20S-HA
I B M Microelectronics Division
Document Number: DCAL2HDSU-02
Data Compression
When MMODE equals B'0', use +ADDR(4:0) equals
X'02' to read ECL(7:0); and +ADDR(4:0) equals
X'03' to read ECL(15:8).
When MMODE equals B'1', use +ADDR(4:0) equals
X'03' to read ECL(7:0); and +ADDR(4:0) equals
X'02' to read ECL(15:8).
3.1.4 Original Data Interface
Polarity (OPOL) and Compressed
Data Interface Polarity (CPOL)
The Original Data Interface Polarity register
provides original data interface polarity config-
uration capability to the microprocessor. The
Compressed Data Interface Polarity register
provides compressed data interface polarity
configuration capability to the microprocessor.
OPOL and CPOL are reset to X'00FF' by a
hardware reset.
OPOL is only accessable when CMND is equal
to X'C100'; CPOL when CMND is equal to
X'C200'.
Note: The Original Data Interface Polarity
(OPOL) and the Compressed Data Interface
Polarity (CPOL) registers are independently
configurable. In the discussion below, these
registers are called the xPOL register, where
the "x" is replaced by "O" only or "C" only, as
appropriate.
When MMODE equals B'0', use +ADDR(4:0) equals
X'02' to read and write xPOL(7:0); and
+ADDR(4:0) equals X'03' to read and write
xPOL(15:8).
When MMODE equals B'1', use +ADDR(4:0) equals
X'03' to read and write xPOL(7:0); and
+ADDR(4:0) equals X'02' to read and write
xPOL(15:8).
AB'0' in an xPOL bit position will program the
corresponding control pin polarity to be positive
active. A B'1' will program the corresponding
control pin polarity to be negative active.
3.1.5 Original Data Interface
Transfer Count (TCO)
The Original Data Interface Transfer Count reg-
ister provides status information on the number
of bytes transferred for a current data transfer
operation. Original Data Interface Transfer
Count (TCO) is a four byte register with the two
most significant bytes contained in Original
Data Interface Transfer Count High (TCOH) and
the two least significant bytes contained in Ori-
ginal Data Interface Transfer Count Low (TCOL).
TCOL and TCOH are reset to X'0000' by a
hardware or software reset.
This register is only accessable when CMND is
not equal to X'C100',X'C200',X'C400',or
X'C800'.
When MMODE equals B'0', use +ADDR(4:0) equals
X'04' to read TCOH(7:0); +ADDR(4:0) equals
X'05' to read TCOH(15:8); +ADDR(4:0) equals
X'06' to read TCOL(7:0); and +ADDR(4:0) equals
X'07' to read TCOL(15:8).
When MMODE equals B'1', use +ADDR(4:0) equals
X'05' to read TCOH(7:0); +ADDR(4:0) equals
X'04' to read TCOH(15:8); +ADDR(4:0) equals
X'07' to read TCOL(7:0); and +ADDR(4:0) equals
X'06' to read TCOL(15:8).
During a compression operation, TCO is incre-
mented as each original data byte is received
by the original data interface. When TCO
equals XFR during compression, all bytes in the
compression operation have been received by
ALDC1-20S-HA.
Figure
3-5. xPOL
BIT
NAME/NOTES
15:8
Reserved
7
xCIN
6
Reserved
5
xCOUT(0)
Figure
3-4. ECL
4
xCOUT(1)
BIT
NAME/NOTES
3
xCOUT(2)
15:0
EC Level
For ALDC1-20S-HA, the value of
these bits is B'00000000
11000001'.
2
xCOUT(3)
1
xCOUT(4)
0
(C) IBM CORP. 1993, 1994. ALL RIGHTS RESERVED. USE IS FURTHER SUBJECT TO THE PROVISIONS ON THE BACK OF THE TITLE PAGE.
3-5
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