PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 91

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

CLKO Baud Rate Registers
Value after reset: 00
CKOBR(15-0) Less significant bits of baud rate division factor for CLKO output from
Serial Audio Interface Signal Register
Value after reset: 00
SODS
SPS
DSE
SCKIN
PRSC(9-0)
RFIN
Semiconductor Group
DSP clock.
Serial Audio Interface Open Drain Select for SR and ST line
0
1
SCLK Polarity select
0
1
Data Strobe Enable (only valid if SCLK is output)
0
1
Serial Clock In
0
1
Prescaler
SCLK is derived from the DSP clock by division through PRSC + 1
(1 to 1024)
RFS In
0
1
H
H
SR and ST are push-pull (Reset value)
SR and ST are open drain
Data/Frame Sync out on rising edge, Data/Frame Sync in on
falling edge (if DSE = 1, idle position outside strobe = 0)
Data/Frame Sync out on falling edge, Data/Frame Sync in on
rising edge (if DSE = 1, idle position outside strobe = 1)
SCLK is permanently active
SCLK is active only during the programmed timeslots for SR and
ST. Outside the active timeslots, SR and ST remain as High-Z.
The strobe signals of all audio receivers and transmitters to
either SR or ST line are combined by logical OR and ANDed with
internal SCLK.
SCLK is an input
SCLK is an output
RFS is an input
RFS is an output
91
Read/Write
Read/Write
Address 2005
Address 2003
Register Description
Data Sheet 1998-07-01
PSB 7238
H
H
- 200A
/2004
H
H