T8301 Internet Protocol Telephone
Phone-On-A-Chip
Advance Data Sheet
December 2000
IP Solution DSP
4 DSP1600 Core (continued)
Table 6. Data Memory Area: I/O, Register, and Memory (continued)
Address
R/W
DSP CS
Function
Description
Size
(words)
0x4042
R
I/O
read_companded Read companded value register,
see Table 23.
1
0x4100:0x4107 R/W ERAMLO
0x4108:x410B R/W ERAMLO
I_CSN
I_CSN
External chip select to access token registers.
8
4
External chip select to access ARM interrupt
register.
0x410C:0x410F R/W ERAMLO
0x4110:0x41FF R/W ERAMLO
I_CSN
External chip select to access DSP interrupt
register.
4
I_CSN
Reserved.
240
512
512
512
1K
0x4200:0x43FF
0x4400:0x45FF
0x4600:0x47FF
0x4800:0x4BFF
R
W
W
R
ERAMLO
ERAMLO
ERAMLO
ERAMLO
AIN SRAM
Audio input SRAM buffer.
AOUTA SRAM Handset audio out SRAM buffer.
SOUT SRAM
M_CSN
Speaker audio out SRAM buffer.
External chip select to access ARM to DSP
RAM (in the T8302 IPT_ARM chip).
0x4C00:0x4FFF
W
ERAMLO
M_CSN
External chip select to access DSP to ARM
RAM (in the T8302 IPT_ARM chip).
1K
0x5000:0x7FFF R/W ERAMLO
0x8000:0xBFFF R/W ERAMHI
X_CSN
ISRAM
External spare chip select.
Internal SRAM.
12K
16K
16
Lucent Technologies Inc.
AGERE [ AGERE SYSTEMS ]
