Operating Modes; Data Packing; External Access Extension - Analog Devices SHARC ADSP-214 Series Hardware Reference Manual

Table 3-3. AMI Address Memory Map
Bus Width External
Memory
Bank
ADSP-2146x/ADSP-2147x/ADSP-2148x
8-bit (and 0
PKDIS = 0)
8-bit (and 1, 2, 3
PKDIS = 0)
ADSP-2147x/ADSP-2148x
16-bit (and 0
PKDIS = 0)
16-bit (and 1, 2, 3
PKDIS = 0)

Operating Modes

The AMI operating modes are described in the following sections.

Data Packing

The combination of the (
packing for 8/16 to 32 bits. These modes are summarized in

External Access Extension

The AMI controller has an
extension. When
cate when the processor can sample
low (refer to Figure 3-3
mum value for
cycles). If is enabled, the minimum allowed value for
ACK
ADSP-214xx SHARC Processor Hardware Reference
www.BDTIC.com/ADI
Internal Logical Address
(supported memory map)
0x0020_0000 – 0x003F_FFFF 0x80_0000 – 0xFF_FFFF
0x0400_0000 – 0x043F_FFFF
0x0800_0000 – 0x083F_FFFF
0x0C00_0000 – 0x0C3F_FFFF
0x0400_0000 – 0x047F_FFFF
0x0800_0000 – 0x087F_FFFF
0x0C00_0000 – 0x0C7F_FFFF
) and (
PKDIS
Pin which can be used for external access
ACK
is enabled, the wait state value should be set to indi-
ACK
and Figure
is 2 (a wait state value of 0 corresponds to 32 wait
WS
External Physical Address
(on ADDR23–0)
0x00_0000 – 0xFF_FFFF
0x40_0000 – 0xFF_FFFF
0x00_0000 – 0xFF_FFFF
) bits allow combinations of
MSWF
after the
ACK AMI_RD
3-4). If is not enabled, the mini-
ACK
External Port
Table 3-4.
/ edge goes
AMI_WR
is 1.
WS
3-15