PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 114

• Manufacturer Part Number: PSB7238
• Description: Joint Audio Decoder-Encoder - Multimode
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Semiconductor Group
Status Register
STAR
XDOV
XFW
XCEC
RCEC
BSY
RNA
Transmit Data Overflow
Transmitter Command Executing
Busy state in the receive channel
Indicates that more than 32 bytes have been written into the transmit FIFO.
Set:
Reset: After reading STAR register, XRES or hardware reset.
Transmit FIFO Write Enable
Data can be entered into the transmit FIFO.
Set:
Reset: After XF command has been given.
If ‘1’, a command is currently executed by the transmitter and no further
command may be written into the XCMD register. When ‘0’, a new command
may be entered into XCMD.
Set:
Reset: After the new command has been executed, after hardware reset.
Reveiver Command Executing
If ‘1’, a command is currently executed by the receiver and no further
command may be written into the RCMD register. When ‘0’, a new
command may be entered into RCMD.
Set:
Reset: After the new command has been executed, after hardware reset.
A ‘0’ indicates an “idle” state.
Set:
Reset: After 15 consecutive ones have been received.
Receive channel Not Active
Indicates whether flags/frames are being received on the line (0) or not (1).
Set:
Reset: After each received 0, after RRES, after hardware reset.
XDOV
Bit 7
In the write cycle of the 33 byte.
After the XF command execution has been finished, after XRES,
after hardware reset.
After a new command has been written to the XCMD register
(with the rising edge of WR).
After a new command has been written to the RCMD register (with
the rising edge of WR).
After a ‘0’ has been received, after RRES, after hardware reset.
After 7 consecutive ones are received on the line.
STAR
XFW
XCEC
RCEC
114
Read
BSY
RNA
Register Description
Address 20
Data Sheet 1998-07-01
STR
PSB 7238
H
Bit 0
STX