PEB20570FV3.1T Infineon Technologies, PEB20570FV3.1T Datasheet - Page 137

• Manufacturer Part Number: PEB20570FV3.1T
• Manufacturer: Infineon Technologies

Specifications of PEB20570FV3.1T

• Lead Free Status / Rohs Status: Not Compliant

• Transparent Mode: No HDLC framing exists. In the receive direction everything on
• Asynchronous Mode: This mode is used with request to send/ clear to send
RTS/CTS Hand-shaking
In point to point configuration the LCxD and LTxD are used for CTS and RTS
handshaking. A transmission request is indicated by outputting a logical ‘0’ on the
request to send output (RTS). After having received the permission to transmit (CTS),
the HDLC starts data transmission. If permission to transmit is withdrawn in the course
of transmission, the frame is aborted and an idle is sent.
4.7.3
The GHDLC is connected to the following DELIC interface lines:
Figure 47
Serial data is transceived over the LRxD/LTxD lines. The line clock can be driven by an
external GHDLC device or can be generated internally by the PCM clocking path. The
selected internal clock is also driven outward via LCLK.
4.7.3.1
LTSC is the external tri-state control line. When LTSC is high LTxD is disabled and in
high impedance state. When LTSC is low, LTxD may take on values 0 or 1 when in push
pull mode, 0 or high impedance when in open drain mode.
4.7.3.2
Arbitration between several GHDLCs can be done in two ways:
• Polling
• Collision Detection
Data Sheet
the line is automatically passed to the buffer. Each time the buffer is filled an interrupt
to the DSP is generated.
handshaking. In this mode data is transmitted over a channel at a very slow rate of
up to 300 baud and controlled directly by the DSP.
External Configuration and Handshaking in Bus Mode
External Tri-State in Point-to-Multi-Point Mode
Arbitration Between Several GHDLCs
GHDLC Interface Lines
GHDLC
120
LTSC
LTxD
LRxD
LCxD / CTS
LCLK
/ RTS
Functional Description
PEB 20570
PEB 20571
2003-07-31