Abit TX5 User Manual download pdf (Page 11)

COMMERCIAL TEMPERATURE RANGE

IDT7290820 5V TIME SLOT INTERCHANGE

DIGITAL SWITCH 2,048 x 2,048

TABLE 6  CONTROL REGISTER (CR) BITS

TABLE 7  VALID ADDRESS LINES FOR DIFFERENT BIT RATES

TABLE 5  OUTPUT HIGH IMPEDANCE CONTROL

OE bit in Connection ODE pin OSB bit in IMS TX Output Driver

Memory Register Status

0 Don’t Care Don’t Care Per Channel

High-Impedance

1 0 0 High-Impedance

1 0 1 Enable

1 1 1 Enable

1 1 0 Enable

Read/Write Address: 00H,

Reset Value: 0000H.

1514131211109876543210

0000000000MBPMSSTA3 STA2 STA1 STA0

Bit Name Description

15-6 Unused Must be zero for normal operation.

5 MBP When 1, the connection memory block programming feature is ready for the programming of Connection

(Memory Block Program) Memory high bits, bit 11 to bit 15. When 0, this feature is disabled.

4 MS When 0, connection memory is selected for read or write operations. When 1, the data memory is selected

(Memory Select) for read operations and connection memory is selected for write operations.

(No microprocessor write operation is allowed for the data memory).

3-0 STA3-0 The binary value expressed by these bits refers to the input or output data stream, which corresponds

(Stream Address Bits) to the subsection of memory made accessible for subsequent operations. (STA3 = MSB, STA0 = LSB)

Input/Output Valid Address Lines

Data Rate

2.048 Mb/s A4, A3, A2, A1, A0

4.096 Mb/s A5, A4, A3, A2, A1, A0

8.192 Mb/s A6, A5, A4, A3, A2, A1, A0

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 26 27

No comments

Abit TX5 User Manual Page 11