PEB2466 SIEMENS [Siemens Semiconductor Group], PEB2466 Datasheet - Page 51

• Manufacturer Part Number: PEB2466
• Description: Four Channel Codec Filter with PCM- and m-Controller Interface SICOFI4-mC
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

software-reset (see XOP command), the SICOFI-4- C enters a basic setting mode.
Basic setting means, that the SICOFI-4- C configuration registers CR0... CR6 and
XR0... XR7 are initialized to ‘0’ for all channels.
All programmable filters are disabled, all programmable command/indication pins are
inputs. The two tone generators as well as any testmodes are disabled. There is no
persistence checking. Receive signaling registers are cleared. DOUT-pin is in high
impedance state, the analog outputs and the signaling outputs are forced to ground.
CR0.. CR6
If any voltage is applied to any input-pin before initial application of
may not enter the basic setting mode. In this case it is necessary to reset the
SICOFI-4- C or to initialize the SICOFI-4- C configuration registers to ‘0’.
The SICOFI-4- C leaves this mode automatically after the RESET-pin is released.
Standby Mode
After releasing the RESET-pin, (RESET-state), the SICOFI-4- C will enter the Standby
mode. The SICOFI-4- C is forced to standby mode with the PU-bit set to ‘0’ in the
CR1-register (POWERDOWN). All 4 channels must be programmed separately. During
standby mode the serial SICOFI-4- C -Controller interface is ready to receive and
transmit commands and data. Received voice data on DRA, DRB-pin will be ignored.
SICOFI-4- C configuration registers and Coefficient-RAM can be loaded and read back
in this mode. Data on signaling input pins can be read via the -Controller interface.
RESET (Basic Setting Mode)
Upon initial application of
XR0.. XR7
Coefficient-RAM
Command Stack
DIN-input
DOUT-output
VOUT1,2,3,4
SBx_y
SOx_y
DXA, DXB
VOUT1, 2, 3, 4
Semiconductor Group
V
High ‘Z’
GNDA1, 2, 3, 4
DD
00
00
Old value
Cleared
Ignored
High impedance
GNDA1,2,3,4
Input
GNDD
or resetting pin RESET to ‘0’ during operation, or by
H
H
51
Programming the SICOFI
V
DD
, the SICOFI-4- C
PEB 2466
®
-4- C
02.97