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TN8044AH-R0117 데이터시트(PDF) 48 Page - InnovASIC, Inc

부품명 TN8044AH-R0117
상세설명  SDLC Communications Controller
PDF  65 Pages
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제조업체  INNOVASIC [InnovASIC, Inc]
홈페이지  http://www.innovasic.com
Logo INNOVASIC - InnovASIC, Inc

TN8044AH-R0117 데이터시트(HTML) 48 Page - InnovASIC, Inc

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IA8044/IA8344
Data Sheet
SDLC Communications Controller
March 30, 2010
IA211010112-04
http://www.Innovasic.com
UNCONTROLLED WHEN PRINTED OR COPIED
Customer Support:
Page 48 of 65
1-888-824-4184
®
4.15.2 BYP
The BYP contains registers and controllers used to perform the manipulations required for SDLC
communications. The BYP registers may be accessed by the CPU (see Table 7, SFR Bit
Addressable Locations). The BYP contains the SIU state machine that controls transmission and
reception of frames.
4.16
Diagnostics
A diagnostic mode is included with the IA8044/IA8344 to allow testing of the SIU. Diagnostics
use port pins P3.0 and P3.1. Writing a ―0‖ to P3.1 enables the diagnostic mode. When P3.1 is
cleared, writing data to P3.0 has the effect of writing a serial data stream to the SIU. P3.0 is the
serial data and any write to Port 3 will clock SCLK. The transmit data may be monitored on P3.1
with any write to Port 3, again clocking SCLK. In the test mode P3.0 and P3.1 pins are placed in
the high impedance state (see Figure 12).



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