Intel SA-1100 manual Ttu, Tro, Anf, Ane, Tne, Cwc, Crc, MCDR2, Ace

Peripheral Control Module

Bit	Name		Description
6	TTU	Telecom transmit FIFO underrun.
		0	– Telecom transmit FIFO has not experienced an underrun.
		1	– Telecom transmit logic attempted to fetch data from transmit FIFO while it was
		empty, request interrupt.
7	TRO	Telecom receive FIFO overrun.
		0	– Telecom receive FIFO has not experienced an overrun.
		1	– Telecom receive logic attempted to place data into receive FIFO while it was full,
		request interrupt.
8	ANF	Audio transmit FIFO not full (read-only).
		0	– Audio transmit FIFO is full.
		1– Audio transmit FIFO is not full.
9	ANE	Audio receive FIFO not empty (read-only).
		0	– Audio receive FIFO is empty.
		1	– Audio receive FIFO is not empty.
10	TNF	Telecom transmit FIFO not full (read-only).
		0	– Telecom transmit FIFO is full.
		1	– Telecom transmit FIFO is not full.
11	TNE	Telecom receive FIFO not empty (read-only).
		0	– Telecom receive FIFO is empty.
		1	– Telecom receive FIFO is not empty.
12	CWC	Codec write completed (read-only).
		0 – A write to a codec register has not completed since the last time this bit was cleared.
		1	– A write to a codec register has been transmitted and has updated the register.
13	CRC	Codec read completed (read-only).
		0	– The value read from the addressed codec register has not been returned to
		MCDR2.
		1	– The value read from the addressed codec register is now in MCDR2.
14	ACE	Audio codec enabled (read-only).
		0	– The audio codec input and output is disabled (bits 14 and 15 are 0 in Audio Control
		Reg B).
		1	– Audio codec input and/or output is enabled (bits 14 and/or 15 is 1 in Audio Control
		Reg B).
15	TCE	Telecom codec enabled.
		0	– The telecom codec input and output is disabled (bits 14 and 15 are 0 in Telecom
		Cntl Reg B).
		1 – Telecom codec input and/or output is enabled (bits 14 and/or 15 is 1 in Telecom Cntl
		Reg B).
31..16	—	Reserved.

11-168 SA-1100 Developer’s Manual