ZL50074GAC ZARLINK [Zarlink Semiconductor Inc], ZL50074GAC Datasheet - Page 22

• 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]

For example, to transfer all 32 bits in a single access: A1 = 0. A0 = 0, SIZ1 = 0, SIZ0 = 0. To transfer D15 - 8 only:
A1 = 1, A0 = 0, SIZ1 = 0, SIZ0 = 1.
In Intel Bus Mode (IM = 1), A1 - 0, and SIZ1 - 0 form active low byte enable signals, consistent with BE3 - 0
available on the Intel i960 processor, as shown in Table 7.
Byte addressing applies only to write accesses. On read cycles, all 32 bits are output on every access.
Table 6 - 32 Bit Motorola Mode Access Transfer Size
Table 7 - 32 Bit Intel Mode Bus Enable Signals
SIZ1
0
0
1
1
SIZ1
SIZ0
Pin
A1
A0
SIZ0
0
1
0
1
Zarlink Semiconductor Inc.
ZL50074
i960 Signal
Equivalent
22
BE3
BE2
BE1
BE0
Access Transfer Size
4 bytes
2 Bytes
3 Bytes
1 Byte
Addressed
Bit 31:24
Bit 23:16
Bit 15:8
Bit 7:0
Byte
Data Sheet