PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 164
PSB7238
Manufacturer Part Number
PSB7238
Description
Joint Audio Decoder-Encoder - Multimode
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PSB7238.pdf
(190 pages)
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Semiconductor Group
The following steps are executed:
1. The JADE writes a packet of uncompressed audio (2.5 ms) into the mailbox (most
2. The JADE generates an interrupt at INT line to the host by writing a value 03
3. This interrupt acknowledges the previous INH interrupt (either from the compressed
4. The host reads the uncompressed audio from the mailbox using the procedure
5. The host writes a packet of uncompressed audio (2.5 ms) into the mailbox using the
6. The host generates an interrupt ot the JADE by writing value 02
7. The JADE reads the uncompressed audio data from the mailbox.
After the above procedure has been repeated four times, the finishing procedure is
executed (see Figure 48):
significant byte first).
interrupt status register at address 58
data transfer or from the last uncompressed data transfer) and requests the current
uncompressed data exchange.
described in Section 3.3.2.2 and may reset the INDB bit. The reset of the INDB bit is
not mandatory and may be skipped.
procedure described in Section 3.3.2.2.
status register at address 50
H
.
H
.
164
Data Sheet 1998-07-01
Firmware Features
H
into INH interrupt
PSB 7238
H
into IND
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