peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 35

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

Table 1-3 Communication and Signaling Interfaces (cont’d)
Pin
No.
160
Other Lines
88
79
152
Note: The optional SACCO-B1 signals which are combined with IOM-2 Interface ports 4
Semiconductor Group
to 7 are described in the Table 1-1.
Symbol
CTS
CHI
DRDY
FSCD
In (I)
Out (O)
I
O
I
O
During
Reset
I
“Low”
I
High
Impedance
1-15
Function
Clear To Send
When low, this indicates that the modem
or data set is ready to exchange data. The
CTS signal is a modem status input
whose conditions can be tested by the µP
reading bit 4 (CTS) of the modem status
register. Bit 4 is the complement of the
CTS signal. Bit 0 (DCTS) of the modem
status register indicates whether the CTS
input has changed state since the
previous reading of the modem status
register. CTS has no effect on the
transmitter.
Note: Whenever the CTS bit of the
CHannel Indication Signal on IOM-2
D-channel ReaDY controls SIDEC in LT-T
mode applications
(Collision signal that the S/T Interface is
not free for signaling; i.e. QUAT-S signal)
when not used this input should be tied to
“high”.
Frame Synchronization Clock with Delay
of 62.5 µs related to the standard FSC
(Synchronizes layer-1 devices connected
to the second half of an extended IOM-2
interface with 64 time-slots; i.e. OCTAT-P
or QUAT-S).
modem status register changes
state, an interrupt is generated if the
modem status interrupt is enabled.
PEB 20560
Overview
2003-08