PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 111
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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PSB 7238
Register Description
5.4
HDLC Controller Registers
As mentioned previously, the addresses for the HDLC registers are given here for the
DSP for completeness only, since they are only relevant for the on-chip firmware.
The access to the register banks of the two HDLC controllers is determined by the
“HDLC Controller Access from Host” bits HAH1 (for HDLC1) and HAH2 (for HDLC2):
– When HAHx is 0, the DSP is allowed to access the HDLC register bank, and thus to
service the HDLC controller.
– When HAHx is ‘1’, the host is allowed to service the HDLC controller.
Figure 38
In the following tables the addresses are relative to the base address 80
(HDLC1) or
H
C0
(HDLC2). In each row, the upper line lists the read values, the lower the write values
H
of the corresponding register.
Semiconductor Group
111
Data Sheet 1998-07-01
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