ZL50074GAC ZARLINK [Zarlink Semiconductor Inc], ZL50074GAC Datasheet - Page 35

• Manufacturer Part Number: ZL50074GAC
• Description: 32 K x 32 K Channel TDM Switch with 128 Input and 128 Output Streams
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

Within each stream group, the mapping of each of the actual input streams, STiAn, STiBn, STiCn and STiDn,
depends on the device data rate programmed into the Global Rate Control Register. The address offsets to these
data areas for each of the input streams are illustrated in Table 19.
The address ranges for the data memory portion corresponding to each of the actual input streams, STiAn, STiBn,
STiCn and STiDn, for any particular input group number is calculated by adding the Start Address for the particular
group, as indicated in Table 18, to the appropriate Address Offset Range, as indicated in Table 19. The time-slots
map linearly into the appropriate address offset range. (i.e., timeslots 0, 1, 2, ... map into addresses 00000, 00001,
00002, ...)
The entire data memory is a read only structure. Any write attempts will result in a bus error. BERR is driven active
low to terminate the bus cycle.
Device Data Rate
Group
Input
65 Mbps
32 Mbps
16 Mbps
12
13
14
15
8 Mbps
Table 19 - Data Memory Stream Address Offset at Various Output Rates
Address
02BC00
02B000
02B400
02B800
Table 18 - Data Memory Group Address Mapping (continued)
(Hex)
Start
Time-slot Range
0 - 1023
0 - 255
0 - 127
0 - 511
02BC00 - 02BFFF
02B800 - 02BBFF
02B000 - 02B3FF
02B400 - 02B7FF
Address Range
N/A
(Hex)
Zarlink Semiconductor Inc.
ZL50074
Output Streams
STiBn, Cn, Dn
35
STiCn, Dn
BERR
STiAn
STiAn
STiBn
STiAn
STiBn
STiCn
STiAn
STiBn
STiCn
STiDn
STiDn
Group
Input
28
29
30
31
Address
02FC00
02F000
02F400
02F800
(Hex)
Start
Address Offset Range (Hex)
00000 - 003FF
00000 - 001FF
00200 - 003FF
00000 - 000FF
00100 - 001FF
00200 - 002FF
00300 - 003FF
00080 - 000FF
00180 - 001FF
00200 - 003FF
00000 - 0007F
00100 - 0017F
02FC00 - 02FFFF
02F800 - 02FBFF
02F000 - 02F3FF
02F400 - 02F7FF
Address Range
N/A
N/A
(Hex)
Data Sheet