PEB 2091
PEF 2091
Operational Description
LT Modes
The pin DISS is used for switching off the remote power supply of the subscriber line. It
is set to ’1’ by the C/I-command "LTD" (0011B). A software reset with C/I = "RES" does
not affect the DISS-pin. While the DISS-pin is set to (1), the device is in the "TEST" state
"State Machine in LT Modes", page 146.
4.10
Access to Power Controller Interface
Note 59: This chapter applies only in stand-alone mode.
The interface consists of three data bits PCD0 ... 2, two address bits PCA0,1, read and
write signals PCRD and PCWR respectively as well as an interrupt facility INT.
For dynamical characteristics, see "Power Controller Interface Timing", page 277.
For an example for programming code, see "Example for Programming Power Controller
Interface", page 235.
4.10.1
Data Port
Communication with the data port (PCD0 ... 2, PCA0,1, PCRD and PCWR) of the power
controller interface is established with local Monitor messages (MON-8) of the IOM®-2
interface. Table 32 lists all MON-8 commands that are relevant to the power controller
interface.
Table 32
Channel
MON-8
MON-8 and C/I-Commands
Code
Function
WCI
Write to interface. Address and data is contained in the
MON-command. The address is latched, data is not latched.
MON-8
MON-8
RCI
ACI
Read from interface at specified address. Address is latched
and the current value of the data port is read. The result is
returned to the user with MON-8 "ACI".
Answer from interface. After a RCI-request the value of three
data bits at the specified address is returned.
The codes of these commands are given below. For more information about
programming MON-8 commands see "MON-8 Codes", page 228
Semiconductor Group
196
Data Sheet 01.99
INFINEON [ Infineon ]
