am79c30a Advanced Micro Devices, am79c30a Datasheet - Page 23

• Manufacturer Part Number: am79c30a
• Description: Digital Subscriber Controller ?dsc ?circuit
• Manufacturer: Advanced Micro Devices

MUX Control Register 4 (MCR4), Read/Write
Address = Indirect 44H
The MUX Control Register 4 (MCR4) can prevent interrupt generation by masking the output of IR bit 4. MCR4 has
the format shown in Table 19.
0–2
Bit
3
4
5
6
7
Logical 1
Reserved, must be set to logical 0
Enable Bb- or Bc-channel byte available interrupt (IR Bit 4) Disable interrupt
Reverse bit order of Bb (LSB transmitted/received first)
Reverse bit order of Bc (LSB transmitted/received first)
Reserved, must be set to logical 0
Reserved, must be set to logical 0
Table 19. MUX Control Register 4
Am79C30A/32A Data Sheet
Reserved, must be set to logical 0
No Bc bit reversal (MSB transmitted/received first)
Logical 0 (Default Value)
No Bb bit reversal (MSB transmitted/received first)
Reserved, must be set to logical 0
Reserved, must be set to logical 0
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