CS98100 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CS98100

DVD Processor for Low Cost DVD Players

Cirrus Logic 

CS98100

6.7 Host Master/ATAPI Interface

This 16-bit parallel host interface allows the

CS98100 to be a host master, controlling other de-

vices that would be used on the same system. The

interface supports a programmable protocols and

speeds, including multiplexed and non-multiplexed

addressing. Slaves with different protocols can be

connected at the same time, controlled by different

chip selects. For example, two chip selects can be

used to control an ATAPI DVD device, while the

other two chip selects can control another ATAPI

or non-ATAPI slave device.

Pin

Signal Name Type

Description

91, 92, 93, 94

H_CS[3:0]

O Host Chip Select[3:0]. The host master can be programmed

to use a different protocol for each of the 4 chip selects

69

H_ALE

O Host address latch enable. Used for modes which multiplex

upper address information onto the data lines

124

H_RD

O Host Read Request.

123

H_WR

O Host Write Request.

158

H_RDY

I

Host Ready. Connect to pull-up or pull-down if host is not

used.

66, 67, 68

H_A[2:0]

O Host Address[2:0].

160, 162, 163, 164,

165, 166, 167, 168,

170, 171, 172, 173,

87, 88, 89, 90

H_D[15:0]

B Host Data Bus[15:0]. These pins can also output Host

Address during the address phase for multiplexed

address/data mode. Tie together to pull-up or pull-down if

host is not used.

Table 22. Host Master Interface Pin Assignments

52

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